Rotor for rotating electrical machine, rotating electrical machine and method for production of rotor for rotating electrical machine

FIELD: machine building.

SUBSTANCE: rotor for a rotating electrical machine includes the following: a rotor core with a hole for magnet insertion passing inside, a magnet inserted in the hole for magnet insertion, and an insulating filler filling the space between the inner wall of the hole for magnet insertion and the magnet in order to fix the magnet. The magnet is fixed by the filler so that the magnet surface inside the hole for magnet insertion is inclined to the direction of passing of the inner wall in the hole for magnet insertion.

EFFECT: minimisation of losses from eddy current through the magnet which makes processing of magnet surface by insulating film unnecessary.

10 cl, 13 dwg

 

Area of technology

The present invention relates to a rotor of a rotating electric machine, rotating electric machines and methods for the manufacture of rotors of rotating electrical machines, in particular to the rotor of a rotating electrical machine or a similar rotor with embedded permanent magnet.

Prior art

Commonly known rotors, which includes a built-in permanent magnet for rotating electrical machines such as motors and power generators. The rotor of this type is also called "rotor with interior permanent magnets (EPM)". In such a rotor with SML, a rotor core formed of a cylindrical magnetic body includes a hole for insertion of the magnet, which passes in the axial direction around the inner side of the outer circumferential surface of the rotor core. A permanent magnet inserted into the hole to insert the magnet and bonded with polymeric material.

Rotor with SML is described for example in document JP 2011-4529 A (patent document 1). In this rotor, a cylindrical rotor core in which internally layered electromagnetic steel plate 1, includes an inserted permanent magnet forming the magnetic poles. At the respective ends of the rotor core has two end p�astina. The rotor core and the magnet is bonded to these end plates. Each of the end plates is provided with locking portions, which are bent on the outer rim. The locking portions to clamp a portion of the lateral surface of the rotor core. The description says that this rotor contributes to the achievement of high-strength structures and effectively suppresses the flux leakage from the permanent magnet.

In the document JP 2010-183692 A (patent document 2) describes a magnet motor that is inserted into the slot in the direction along the axial direction of the rotor. This magnet motor formed of two or more segmented magnets that are stacked in layers in the axial direction of the rotor. Around each of the segment magnets through oxidation of these segmented magnets formed oxide film.

In addition, in document JP 2005-94845 A (patent document 3) describes a rotor of a rotating electric machine with a permanent magnet, in which a permanent magnet is inserted and fixed in the hole for insertion of the magnet iron core of the rotor formed by layering numerous circular iron plates of the rotor. The description says that the permanent magnet is formed of two or more single magnets that align to the axial direction and covered p�the hotel search option for shaping rod.

Patent documents

Patent document 1: JP 2011-4529 A

Patent document 2: JP 2010-183692 A

Patent document 3: JP 2005-94845 A

Summary the essence of the invention

In a permanent magnet inserted into the rotor core in the rotor with SML described in the aforementioned patent document 1, processing an insulating film can be realized by using an oxide film, a polymer coating or similar means, as described in the aforementioned patent documents 2 and 3.

The reason is that such treatment an insulating film is effective in increasing the output power of the motor by suppressing losses from eddy current through the magnet, which increase with increasing eddy current flowing in the axial direction of the rotor on the surface and inside of the permanent magnet, even if the steel plate are isolated from each other when the conductive permanent magnet is in contact directly with the core of the rotor made of a layered material consisting of steel plates.

However, in order to grow or be formed on the surface of the permanent magnet oxide film having a desired thickness, you need to give the permanent magnet to stand for two days, for example, in a specific atmosphere (see patent document 2). Therefore will fail from�egate value growth due to the longer period of manufacture of a permanent magnet.

In addition, as described in the aforementioned patent document 3, when around the permanent magnet in advance form the polymer coating, in addition to increasing the cost of manufacturing the permanent magnet, due to the increased gap between the permanent magnet and the rotor core is reduced torque output.

The object of the present invention is to develop a rotor of a rotating electrical machine, the rotating electrical machine and a method of manufacturing a rotor of a rotating electrical machine, which can suppress the increase of losses from eddy current through the magnet while the exclusion of the needs in the treatment of an insulating film on the surface of the magnet.

The rotor of the rotating electric machine, in accordance with the present invention is a rotor of a rotating electric machine with a built-in magnet. The rotor of a rotating electrical machine includes a rotor core with a hole for insertion of a magnet moving inside; a magnet inserted into the hole for insertion of the magnet; and an insulating filler, which filled the space between the inner wall of the hole to insert the magnet and the magnet to secure the magnet; wherein the magnet is fixed to the filler so that the surface of the magnet inside the hole to insert MAGN�that is inclined relative to the direction of passage of the inner walls of the openings for inserting the magnet.

In the rotor of a rotating electric machine, in accordance with the present invention, the hole for inserting the magnet may be formed along the axial direction of the rotor core; a magnet can have an axial section in the form of an elongated quadrangle; and the magnet may come in contact with the inner wall of the hole to insert the magnet in the corner on one axial end side and in the other corner at the other axial end side, diametrically opposite corner mentioned on one axial end side.

In this case, the magnet may also have an axial section in the form of a parallelogram and the surface of the axial end faces which are flush with the surfaces of the axial ends of the rotor core. In an alternative embodiment, the magnet may be an axial section of a rectangular shape.

In the rotor of a rotating electric machine, in accordance with the present invention, the magnet can be segmented into a variety of magnetic parts, and the space between each of the parts of the magnet is fully filled with a filler in addition to the fact that is located between the inner wall of the bore for insertion of the magnet and the magnet.

A rotating electric machine, in accordance with another aspect of this invention, provided with a rotor having any of the above structures, and the stator, located�ogenyi around the rotor.

A method of manufacturing a rotor of a rotating electric machine, in accordance with another aspect of this invention, is a method of manufacturing a rotor of a rotating electric machine with a built-in magnet, which consists in that: preparing a magnet and a rotor core with a hole to insert the magnet inside; inserting the magnet into the hole for insertion of the magnet; positioning the press-form the core of a rotor inserted inside the magnet; hold the magnet by using the area of the mold so that the surface of the magnet inside the hole to insert the magnet is inclined relative to the direction of passage of the inner walls of the openings for inserting the magnet; filled with an insulating filler space between the inner wall of the bore for insertion of the magnet and the magnet through an inlet provided through the mold to attach the magnet to the rotor core; and providing a core Assembly of the rotor with the shaft, wherein the magnet is mounted by means of a filler.

In the method of manufacturing a rotor of a rotating electric machine, in accordance with the present invention, the magnet may be an axial section in the form of a parallelogram and the surface of the axial end faces, which can be flush with poverhnosti axial ends of the rotor core, and if you hold the flat inner side surfaces of the mold may rest against a surface of the axial end faces of the rotor core and the axial ends of the magnet so that the magnet can be held in an inclined position inside the hole to insert the magnet.

In addition, in the method of manufacturing a rotor of a rotating electric machine, in accordance with the present invention, the magnet may be an axial section of a rectangular shape, and when you hold down the inclined surface of the protruding sections that protrude on the inner side surfaces of the mold, can rest against a surface of the axial end faces of the magnet and to put pressure on the magnet in the axial direction, so that the magnet can be held in an inclined position inside the hole to insert the magnet.

In addition, in the method of manufacturing a rotor of a rotating electric machine, in accordance with the present invention, the magnet may be an axial section of a rectangular shape, and when you hold down the inclined surface of the protruding sections which resiliently secured the mold and is arranged to move back and forth, can abut the axial end areas of the magnet and to exert pressure on the axial end portion of the magnet in a direction essentially perpendicular to the axial direction, so that m�knit you can hold in an inclined position inside the hole to insert the magnet.

In accordance with the rotor of the rotating electric machine according to the present invention, the contact area between the magnet and the rotor core minimize, placing the magnet so that the magnet surface is inclined relative to the direction of passage of the inner walls of the openings for inserting the magnet. Thus, even in the absence of the insulating film formed on the surface of the magnet, it is possible to avoid increasing the path length in the form of a closed loop, in which eddy current flows in the rotor core through the magnet. Therefore, it becomes possible to suppress the loss of the eddy current through the magnet while the exclusion of the needs of the insulating film on the surface of the magnet.

Brief description of the drawings

Fig. 1 shows a section along the axial direction of the rotor of the rotating electric machine, in accordance with one variant of implementation of the present invention.

Fig. 2 shows the surface of the axial end face of the rotor core shown in Fig. 1.

Fig. 3 shows in an enlarged scale view of one magnetic pole core of the rotor shown in Fig. 2.

Fig. 4 shows a section carried out along the line A-A shown in Fig. 3.

Fig. 5 shows a section similar to Fig. 4, an example of a permanent magnet having an axial section rectang�your form.

Fig. 6 shows a conventional scheme, describing how eddy current flows in the magnetic steel plates forming a rotating core, through the surface of the permanent magnet, which is not carried out the processing of the insulating film.

Fig. 7 shows a block diagram of the sequence of operations describing the method of manufacturing a rotor of a rotating electrical machine, according to the considered variant implementation.

Fig. 8 shows a view according to which a permanent magnet having an axial section in the form of a parallelogram, is held in an inclined position inside the hole for inserting magnet core of the rotor by means of a mould.

Fig. 9 shows a view, according to which a permanent magnet having an axial section in the form of a rectangle, is held in an inclined position inside the hole for inserting magnet core of the rotor by means of a mould.

Fig. 10 shows another example in which a permanent magnet having an axial section in the form of a rectangle, is held in an inclined position inside the hole for inserting magnet core of the rotor by means of a mould.

Fig. 11 is a view similar to Fig. 3, with the option of a rotor of a rotating electrical machine hereby in accordance with the present invention.

Fig. 12 is a view similar to Fi�. 3, with another option of a rotor of a rotating electrical machine, in accordance with the present invention.

Fig. 13 is a view similar to Fig. 9, with the rotor core according to the embodiment shown in Fig. 12, installed in the mold.

Description of preferred embodiments of the invention

Below, with reference to the accompanying drawings, is a description of embodiments according to the present invention (hereinafter referred to as the "implementation options"). In the description, specific shapes, materials, positions, directions, etc. are presented simply as examples to facilitate understanding of this invention, and can be appropriately changed in accordance with applications, assignments and technical characteristics. From the outset, it is assumed that the following description encompasses two or more embodiments and variations, and describe the features of the aforesaid embodiments can be appropriately combined for use.

Fig. 1 is a sectional view along the axial direction of a rotor of the rotating electrical machine 10, in accordance with one variant of implementation of the present invention (hereinafter referred to simply as "rotor"). Around the rotor 10 is a cylindrical stator 11 with a predetermined satoro� between them, and they constitute a rotating electric machine. On the inner circumference of the stator 11 is provided for or more teeth at equal intervals between them, so that the teeth protrude inward in the radial direction. Between adjacent teeth on the inner circumferential side and at both axial ends are also open slots in the same amount as that of the teeth. In the grooves laid around the teeth of the stator winding (not shown). Thus, when the stator winding power supply serves, on the inner side of the stator 11 is formed of a rotating magnetic field that rotates the rotor 10.

The rotor 10 is provided with a cylindrical core 12 of the rotor having: a hole 23 under the shaft in the radial center; a shaft 14 which is mounted so that the hole 23 penetrates under the core shaft 12 of the rotor; the end plate 16, is introduced into contact with both sides of the core 12 of the rotor in the axial direction (arrow X) of the shaft 14 and the core 12 of the rotor); and the fastening element 18 that secures the core 12 of the rotor and the end plate 16 to the shaft 14.

The core 12 of the rotor is formed of many electromagnetic steel plates layered in the axial direction. Each of the electromagnetic steel plates are made by cutting circular plates of silicon steel plates or similar workpieces with a thickness, e.g.�p, 0.3 mm. the Electromagnetic steel plates forming the core 12 of the rotor are connected together in such a way that prasowanie, bonding and welding in the blocks, and the core 12 is segmented into two or more blocks in the axial direction, or the electromagnetic steel plates forming the core 12 of the rotor, articulated with each other as a single unit. Each of the electromagnetic steel plates constituting the core 12 of the rotor is electrically isolated from the other through the insulating film formed on the surface of the steel plate.

In addition, at equal distances from each other in the circumferential direction of the core 12 of the rotor are two or more magnetic poles 24 (see Fig. 2). Each of the magnetic poles 24 includes a pair of permanent magnets, described in detail below. In addition, the core 12 of the rotor placed in a predetermined circumferential position on the shaft 14 by an interference fit or keyed fit.

In addition, along with a variant implementation by layering electromagnetic steel plates, the core 12 of the rotor may be formed of pressed powder magnetic core made of magnetic powder such as powder of a soft magnetic metal or a magnetic powder of metal oxide, and both are covered with a polymer binder�m, such as silicone resin. The soft magnetic powder metal may include iron, iron-based alloy and silicon, alloy iron-based and nitrogen-based alloy of iron and carbon, an alloy based on iron and boron, an alloy based on iron and cobalt, an alloy based on iron and phosphorus, an alloy based on iron, Nickel and cobalt and an alloy based on iron, aluminum and silicon.

The shaft 14 is formed, for example, from a round steel rod. Along the outer circumference formed by the flange section 15, which acts in the radial direction. When the rotor 10 is assembled, this flange section 15 abuts one of the end plates 16 and functions as a resting phase, which determines the position of the core 12 of the rotor shaft 14 in the axial direction.

Each of the end plates 16 is formed of a circular plate having an outer shape almost identical to the surface of the axial end face of the core 12 of the rotor. The end plate 16 is preferably formed of a nonmagnetic metal material such as aluminum and copper. The reason for using a non-magnetic metallic material is in suppressing the short circuit of magnetic flux at the areas of the axial end faces of the permanent magnet forming the magnetic pole. However, since the material is not limited to metal mate�Yalom provided this material is non-magnetic, the end plate 16 can be made of polymer. In addition, making the end plate 16 is smaller than the core 12 of the rotor, or excluding the end plate 16, it is possible to reduce the cost.

The fastening element 18 includes a cylindrical mounting section 20, which is fastened to the shaft 14, and an annular clamping section 22, which acts outwards in a radial direction from one end portion of the fixing section 20. The fastening element 18 mounted on a shaft 14 so that the core 12 of the rotor and both the end plate 16 is pressed against the flange section 15 of the clamping block 22, with the mounting section 20 is fastened to the shaft 14 by means of this method of fastening, as prasowanie, welding or screwing. Thus, the core 12 of the rotor attached to the shaft 14 together with the end plates 16.

Next, with reference to Fig. 2, 3 and 4, the description of the core structure 12 of the rotor. Although in Fig. 2 shows the surface of the axial end face of the core 12 of the rotor, the cross section of the core 12 of the rotor is vertical to the axial direction has the same structure. Fig. 3 shows in an enlarged scale view of one of the poles 24 of the magnet shown in Fig. 2. In addition, in Fig. 4 is a sectional view, drawn along line A-A shown in Fig. 3.

In the center of core 12 of the rotor with the cylinder�ical external form, there is a hole 23 under the shaft, which penetrates the core 12 of the rotor through and through which the shaft 14 is inserted and secured. When the core 12 of the rotor attached to the shaft 14 by an interference fit, the hole 23 under the shaft has a round shape, and keys on the regional area is not provided, as shown in Fig. 2. On the contrary, when the core 12 of the rotor mounted on the shaft 14 by means of a keyed fit, provides the keys (or keyway), speakers (or sunk) to the edge section of the hole 23 under the shaft.

On the outer circumference of the core 12 of the rotor has two or more magnetic poles 24 with equal intervals between them. In this embodiment, the embodiment shown as an example, eight magnetic poles 24, which are arranged at intervals of 45 degrees in the circumferential direction. Since each magnetic pole 24 has an identical structure except for the direction of magnetization of the permanent magnet 26, the following is a description of one magnetic pole 24.

Each magnetic pole 24 includes a pair of permanent magnets 26. Each pair of permanent magnets 26 is embedded inside the core 12 of the rotor in the position near the outer circumferential surface 13. As shown in Fig. 3, two permanent magnets 26 that are included in each magnetic pole 24, have �denticle size and shape. In particular, each permanent magnet 26 has a surface (and cross section) of the axial end face in the form of an elongated rectangle with two short sides and two long sides. The permanent magnet 26 is formed having essentially the same length as the core 12 of the rotor in the axial direction. However, the shape and size of the permanent magnet 26 is not limited to the above configurations, and each permanent magnet may have other shapes and sizes.

Each of the pair of permanent magnets 26 in each of the magnetic poles 24 is inserted and fixed in the hole 32 for insertion of the magnet. Two permanent magnets 26 are arranged essentially in a V-shaped opening facing the outer circumferential surface 13 of the core 12 of the rotor. Each pair of permanent magnets 26 are located symmetrically around the Central line of the magnetic pole, which is a line drawn in the radial direction passing through the center of the circumference of the magnetic pole. However, the location of the pair of permanent magnets 26 is not limited to this arrangement, and each pair of permanent magnets 26 may be located asymmetrically around the Central line of the magnetic pole.

For each of the permanent magnet 26 corresponding to this variant implementation, one of the two surfaces of the long hundred�it, which is on the outer side in the radial direction, the induced magnetization of the first polarity, and the other surface of the long side, which is located on the inner side in the radial direction, the magnetization induced second polarity that is different from the first polarity. In particular, one pair of permanent magnets 26, which is part of one magnetic pole 24, the magnetization formed by the N pole on one surface side which is located on the outer side in the radial direction, and on the other side surface magnetization formed pole S. In contrast, the other pair of permanent magnets 26 of the magnetic poles 24, which is adjacent to the mentioned pair of permanent magnets 26 along the circumferential direction, the S pole formed by the magnetization on one surface side which is located on the outer side in the radial direction, and the N pole formed by the magnetization on the other surface side. Therefore, the direction of magnetization in permanent magnets 26 passes through the entire thickness in the direction perpendicular to the surfaces of both of the long sides, and the surfaces of both short sides are arranged along the direction of magnetization.

A hole 32 for insertion of a magnet into which is inserted a permanent magnet 26, includes a plot 3C, bordering the magnet, to the edges of the permanent magnet 26. Section 33C bordering the magnet, attached to this structure is that it has a rectangular shape essentially identical to the cross section of the permanent magnet 26, but slightly larger. In addition, at both circumferential ends of the openings 32 for insertion of the magnet pocket formed sections 33a, 33b, so these pocket portions 33a, 33b are held outward from the surfaces of the short sides of the permanent magnet 26, aabsys with section 33C bordering the magnet. Pocket portions 33a, 33b formed narrower than the permanent magnet 26 to prevent the entry of the permanent magnet 26 in the hole sections 33a, 33b.

As shown in Fig. 4, the permanent magnet 26 has an axial section in the form of an elongated rectangle. More specifically, the permanent magnet 26 has an axial section in the form of an elongated parallelogram. A hole 32 for insertion of the magnet is formed along the axial direction of the core 12 of the rotor, so that it is enclosed rectangular space extending in the axial direction. The permanent magnet 26 is located in the position in which the surfaces 26a, 26b of the long sides (the surface of the magnet) inside the hole 32 for inserting the magnet is inclined relative to the inner wall of the hole 32 for inserting the magnet, which is parallel to the axial direction.

�ecause the permanent magnet 26 is formed having an axial length, essentially equal to the axial length of the core 12 of the rotor surface 26c, 26d axial ends are essentially flush with both surfaces of the axial ends of the core 12 of the rotor. In addition, corner lot 27a on one axial end side (upper in Fig. 4) permanent magnet 26 and the other corner plot 27b at the other axial end side (lower in Fig. 4), which are diagonally opposite angular section 27a, in contact with the inner wall of the hole 32 for inserting the magnet, i.e., hole core 12 of the rotor. It should be noted that the corner section 27A in the permanent magnet 26 is a plot boundary, limited surface 26b of the long side and the surface 26 of the axial end face, and a corner plot 27b is a plot boundary, limited surface 26a of the long side and the surface 26d of the axial end face.

As described above, between the surfaces 26a, 26b of the long sides of the permanent magnet 26, which is placed in an inclined position inside the hole 32 for inserting the magnet, and the inner wall of the hole 32 for insertion of the magnet, respectively formed by the space having the shape of a cone extending in the axial direction. This space is filled with an insulating filler 34, whereby the permanent magnet 26 is fixed inside the hole 32 for insertion of a magnet.

Concurrently�e of the filler 34 is preferably used a polymer material, having the property of thermoreactive, such as epoxy resin and silicone resin. However, the filler 34 is not limited to such a polymer material, and the filler 34 may use a thermoplastic polymeric material. In addition, to suppress the growth temperature of the permanent magnet 26 by increasing thermal conductivity of the core 12 of the rotor, can be mixed with filler 34 a filler having high thermal conductivity (such as a filler in the form of silicon dioxide). To suppress the reduction of the magnetic flux from the permanent magnet 26 by increasing the magnetic permeability of the filler 34, can be mixed with filler 34 a filler having high magnetic permeability (e.g., iron filings).

Although the space between the surfaces 26a, 26b of the long sides of the permanent magnet 26 and the inner wall of the hole 32 for insertion of the magnet is preferably filled with a filler material 34 without gaps, when filled you can still leave some gap provided that is sufficient adhesion strength of the permanent magnet 26 with the core 12 of the rotor.

As shown in Fig. 3, an insulating filler 34 is also filled pocket portions 33a, 33b of the hole 32 for insertion of the magnet. Thus, we can assume that the pocket portions 33a, 33b otverstia for insertion of the magnet are the area having relatively low magnetic permeability.

By providing a region having a low magnetic permeability and the facing surfaces of the short sides, which are arranged along the direction of magnetization, it becomes possible to effectively suppress the scattering of the magnetic flux and a short circuit between the front and rear surfaces at the circumferential end sections of the permanent magnet 26. Thus, it is possible to suppress the decrease in the value of the flow directed from the permanent magnet 26 to the outer circumference of the rotor, achieving high output power of the motor.

Although the permanent magnet 26 is described as having an axial section in the form of a parallelogram, the shape of the permanent magnet of this shape is not limited. As shown in Fig. 5, it is possible to use a permanent magnet 26 having an axial section in the form of a rectangle. By giving this form to the permanent magnet 26 when the permanent magnets are made by cutting blocks of magnetic material, it becomes possible to increase the yield of usable product with the achievement of lower production costs.

Fig. 6 is a view where the permanent magnet 26 having conductivity and is not subjected to processing an insulating film, fixed so that comes in contact with the inner wall resp�of rste 32 for insertion of the magnet on one side. In this case, as shown in the field, bordered by a dash-dotted line in Fig. 6, the surface 26b of the contact between the permanent magnet 26 and the core 12 of the rotor becomes conductive with the help of many layered electromagnetic steel plates, isolated from each other, resulting in a large way - in the form of a closed loop - eddy current that flows through the surface 26a of the magnet. This increases the losses of the rotor, which rotates in a magnetic field, eddy current, lowering the rated efficiency torque in a rotating electrical machine.

In contrast, since - according to the above described rotor - a permanent magnet 26 is provided in an inclined position relative to the direction of passage of the inner wall of the hole 32 for inserting the magnet, the contact area between the permanent magnet 26 and the core 12 of the rotor can be restricted to the small region, which is a corner plot 27a on one axial end side and corner plot 27b at the other axial end side.

More specifically, the contact area between the permanent magnet 26 and the core 12 of the rotor can be restricted, for example, the plates in the amount of, say, two or more at both axial ends among the electromagnetic steel plates constituting the core 12 of the rotor. Thus, even then, to�Yes on the surface of the permanent magnet 26 is not formed insulating film, there is an opportunity to avoid the formation of a long journey, having the form of a closed loop, eddy current, by which eddy current flows in the core 12 of the rotor using a permanent magnet 26.

Consequently, it becomes possible to suppress increase of loss of the eddy current through the permanent magnet 26 with simultaneous exclusion of the needs in the treatment of an insulating film permanent magnet 26.

In addition, since it is possible to use a permanent magnet 26 without processing an insulating film such as oxide coating and polymer coating, it is possible to achieve cost reduction due to reduced period of manufacture, and a smaller number of processes required to manufacture the permanent magnet 26.

Next, with reference to Fig. 7, describes a method of manufacturing the rotor 10, corresponding to this variant implementation. Fig. 7 presents a block diagram of the sequence of operations illustrating the process of manufacturing the rotor.

First, in step S10, prepare permanent magnets 26 and the core 12 of the rotor, in which are formed holes 32 for inserting magnets.

Then, in step S12, it is inserted from the axial direction of the permanent magnets 26 in the holes 32 for inserting magnet core 12 of the rotor.

In step S14, as shown in Fig. 8, install 12 core rotor� with inserted permanent magnets 26 in-mold 40.

Each of the upper die 42 and the lower die 44, forming the mold 40 includes a flat inner side surface, forming a broad surface that is in contact with the surfaces of the axial ends of the core 12 of the rotor. Since the surface 26C, 26d of the axial ends of the permanent magnet 26, which is located flush with the surfaces of the axial ends of the rotor are in contact with the inner surfaces of the upper die 42 and the lower die 44, a permanent magnet 26 is held in an inclined position inside the hole 32 for inserting magnet core 12 of the rotor in a subsequent step S16.

Then, in step S18, in the mold from the inlet opening 43 formed in the upper die 42 of the mold 40, the injected polymeric material filling the pocket portions 33a, 33b of the hole 32 for insertion of the magnet and the gap between the surfaces 26a, 26b of the long sides of the permanent magnet 26 and the inner wall of the hole 32 for insertion of the magnet. Thus, the permanent magnet 26 is mounted in the hole 32 for inserting magnet core 12 of the rotor.

The core 12 of the rotor in which the permanent magnet 26, as described above, is removed from the mold 40. In a subsequent step S20, the core 12 of the rotor are assembled with the shaft 14, end plates 16 and the fastening element 18. Thus completing the manufacturing of the rotor 10.

Fig. 9 shows the V�, according to which the permanent magnet 26 having an axial section in the form of a rectangle, is held in an inclined position inside the hole 32 for inserting magnet core 12 of the rotor by means of the mold 40. In this case, each of the inner side surfaces of the upper die 42 and the lower die 44 of the mold 40 is provided protruding section 46, which corresponds to the hole 32 for insertion of the magnet and has an inclined end surface. Thus, the permanent magnet 26 is inserted into the hole 32 for inserting the magnet is held in an inclined position inside the hole 32 for insertion of the magnet due to the inclined surfaces of the ends of the protruding sections 46, which rest against the surface 26C, 26B of the axial end faces in the axial direction and are putting pressure on them.

Fig. 10 shows another example in which a permanent magnet 26 having an axial section in the form of a rectangle, is held in an inclined position inside the hole 32 for inserting magnet core 12 of the rotor by means of the mold 40. In this case, the pins 48, which is exposed to the elements, which is provided with upper die 42 and the lower stamp 44 is designed so that the pins 48 can be moved forward and backward. On the site of the tip of the pins 48 formed beveled surface. The pins 48 against the inner surface of the mold 40 Mgmt�shM element 50, so, like a spring or rubber. Thus, the beveled surface is resiliently mounted pin 48 abuts on the corners of the plots of the axial ends of the permanent magnet 26 in the direction perpendicular to the axial direction, and are putting pressure on these parts, so that the permanent magnet 26 is held in an inclined position inside the hole 32 for insertion of the magnet. Because the pins 48 mounted elastically so that the pins 48 can be moved forward and backward, it becomes possible to avoid the application of excessive pressure contact to the permanent magnet 26 by means of the fingers 48, thus preventing damage to the permanent magnet 26.

It should be noted that the rotor, in accordance with the present invention is not limited to the above variants of implementation and their variations. There are various changes and improvements, provided that they are not beyond being and scope of claims of the claims.

For example, although described that the composition of each magnetic poles 24 of the rotor 10 in the above embodiments, includes one pair of permanent magnets 26, the number of permanent magnets included in each magnetic pole, can also be equal to one or greater than three.

In addition, if the structure of one magnetic pole 24 includes one pair of permanent magnetic�tov 26, as shown in Fig. 11, a permanent magnet 26 and the other permanent magnet 26 can have different directions of inclination inside the hole 32 for insertion of the magnet. In other words, on one surface of the axial end face of the core 12 of the rotor of a permanent magnet 26 may be in contact with the core 12 of the rotor in a corner on the outer circumferential side, and the other permanent magnet 26 can be contacted in the corner on the inner circumferential side. Thus, it becomes possible to achieve the advantage that it is possible to mitigate the magnitude of the magnetic flux of one magnetic pole 24 in the axial direction.

In addition, as shown in Fig. 12, each permanent magnet 26, which is part of the magnetic pole 24, can be segmented, for example, two or more in the direction of the long side surface. In this case, in addition to filling the space between the permanent magnet 26 and a hole 32 for inserting the magnet, the filler 34 may completely fill the space between each of adjacent segmented portions of the magnet. Thus, it becomes possible to obtain insulating properties between each of adjacent parts of the magnet, achieving suppression of magnet losses from eddy currents. This can be achieved by providing between the two parts of the magnet in the hole 32 for inserting thin magnet PL�stinate strip 52, which respectively protrude from the upper die 42 and the lower die 44, as shown in Fig. 13, and filling the voids with filler 34 in such conditions.

Position drawings

10, the Rotor of the rotating electric machine

11 Stator

12 of the rotor Core

13 External circumferential surface

14 Shaft

15, the Flange section

16 end plate

The Fastening element 18

20 Mounting the plot

22 Presser plot

23 the shaft Hole

24 Magnetic pole

26 Permanent magnet

26a, 26b, the Surface of the long sides

32 Hole for insertion of a magnet

33a, 33b Pocket areas

33c Plot bordering magnet

34 Filler

40 molds

42 Upper die

44 Lower stamp

46 Protruding section

48 Pin

50 Elastic element

52 Strip

1. The rotor of a rotating electric machine with a built-in magnet that contains:
the core of a rotor with a hole to insert the magnet inside;
a magnet inserted into the hole for insertion of the magnet; and
an insulating filler, which filled the space between the inner wall of the hole to insert the magnet and the magnet to secure the magnet
moreover, the magnet is fixed to the filler so that the surface of the magnet inside the hole to insert the magnet is inclined relative to the direction of passage of the internal�Anna the wall of the hole to insert the magnet.

2. The rotor of the rotating electric machine according to claim 1, in which
the hole for insertion of the magnet is formed along the axial direction of the rotor core;
the magnet has an axial section in the form of an elongated quadrilateral; and
the magnet is in contact with the inner wall of the hole to insert the magnet in the corner on one axial end side and in the other corner at the other axial end side, diametrically opposite corner mentioned on one axial end side.

3. The rotor of the rotating electric machine according to claim 2, in which
the magnet has an axial section in the form of a parallelogram and the surface of the axial end faces which are flush with the surfaces of the axial ends of the rotor core.

4. The rotor of the rotating electric machine according to claim 2, wherein the magnet has an axial cross section of rectangular shape.

5. The rotor of the rotating electric machine according to any one of claims. 1-4, in which
the magnet is segmented into a variety of magnetic parts, and
the space between each of the parts of the magnet is fully filled with a filler in addition to the fact that is located between the inner wall of the bore for insertion of the magnet and the magnet.

6. A rotating electric machine, comprising:
rotor according to any one of claims. 1-5 and
a stator positioned around the rotor.

7. A method of manufacturing a rotor of a rotating electric�cal machine with built-in magnet containing phases in which:
prepare the magnet and the rotor core with a hole to insert the magnet inside;
insert the magnet into the hole for insertion of the magnet;
positioned in the mold the core of a rotor inserted inside the magnet;
hold the magnet by using the area of the mold so that the surface of the magnet inside the hole to insert the magnet is inclined relative to the direction of passage of the inner walls of the openings for inserting the magnet;
filled with an insulating filler space between the inner wall of the bore for insertion of the magnet and the magnet through an inlet provided through the mold to attach the magnet to the rotor core; and
assemble core of the rotor with the shaft, wherein the magnet is fixed by means of the filler.

8. A method of manufacturing a rotor of a rotating electric machine according to claim 7, in which
the magnet has an axial section in the form of a parallelogram and the surface of the axial end faces which are flush with the surfaces of the axial ends of the rotor core, and
if you hold the flat inner side surfaces of the mold to abut in the axial ends of the rotor core and the axial ends of the magnet so that the magnet is held in an inclined position inside the hole�Stia to insert the magnet.

9. A method of manufacturing a rotor of a rotating electric machine according to claim 7, in which
the magnet has an axial cross section of a rectangular shape, and
when you hold down the inclined surface of the protruding sections that protrude on the inner side surfaces of the mold abuts the surface of the axial end faces of the magnet and putting pressure on the magnet in the axial direction, so that the magnet is held in an inclined position inside the hole to insert the magnet.

10. A method of manufacturing a rotor of a rotating electric machine according to claim 7, in which
the magnet has an axial cross section of a rectangular shape, and
when you hold down the inclined surface of the projecting areas which are elastically provided the mold and is arranged to move back and forward, rested in the axial end areas of the magnet and are putting pressure on the axial end areas of the magnet in a direction essentially perpendicular to the axial direction, so that the magnet is held in an inclined position inside the hole to insert the magnet.



 

Same patents:

FIELD: electricity.

SUBSTANCE: invention is related to the area of electric engineering, and namely to electromechanical induction synchronous AC generators. The generator comprises a stator frame with stationary energy-generating elements fixed along the rotor circumference, a multipolar rotor installed so that it may be rotated around its axis. The rotor comprises the preset quantity of permanent magnets mounted along the rotor circumference with a gap in regard to the stator energy-generating elements. The generator comprises also a single-reduction gear unit. Diameter of driving pinion of the reduction gear unit corresponds to the rotor diameter while its idler is fixed at the rotor axis. The stator energy-generating elements are not placed continuously along the rotor circumference, but symmetrically and separately from each other, at that diametrically opposite elements form their own pair, and these pairs of the energy-generating elements are shifted in regard to its other with the preset pitch along the rotor circumference.

EFFECT: development of a small-size generator with high output power.

2 cl, 1 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to electric motors and generators, in particular to regulation of a position of permanent magnets and/or of shunting inserts made from non-magnetoconductive material, in a rotor. AC motor or generator contains fixed windings (or stator), located around a rotor with permanent magnets. The permanent magnets are usually made cylindrical and they have two magnetic poles. Magnetoconductive loops are formed by magnets located in magnetoconductive pole terminals. During rotation of permanent magnets and/or shunting inserts made from conductive non-magnetic material, in pole terminals the force of resulting magnetic field for torque (at low speed) or efficiency (at high speed) regulation of AC motor or generator is increased or decreased. By change of a rotor magnetic field the voltage output of AC generators is regulated with a possibility of ensuring, for example, of constant voltage at the output of the generator with wind motor.

EFFECT: increase of overall performance at various rotational speeds.

20 cl, 55 dwg

Electric machine // 2541356

FIELD: machine building.

SUBSTANCE: electric machine contains casing with laminated rotor core with slots for winding coils installation. In the cylinder cavity of the stator the rotor is installed with possibility of rotation, it includes shaft and inductor with external cylindrical surface containing alternating along the perimeter poles and permanent magnets fixed in slots of the inductor by the non-magnetic wedges. Between the shaft and inductor a bushing is installed, on it inductor is rigidly secured. End faces of the rotor are rigidly secured to the end face covers. The composite permanent magnets of similar height ate rigidly secured in ring clearances. Ring permanent magnets are rigidly secured above each other on walls of second and forth ring collars looking on the rotor axis of rotation. Electric machine casing is provided with shields.

EFFECT: increased service life of the electric machine, significant friction decreasing in bearings at increased and high rotational speed of the inductor.

3 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: multi-pole synchronous electric motor with excitation from permanent magnets comprises a stator with even number of poles 2p, on the poles there is a winding made of one coil per pole, a salient-pole rotor with even number of poles, permanent magnets with tangential magnetisation are located on the rotor radially between poles, the salient-pole rotor with tangential magnetisation of poles is made with number of poles equal to the number of poles on the stator, and equal pitch between poles, pole tips of identical poles on the stator differ in their width from width of poles of the opposite polarity.

EFFECT: simplified design.

1 dwg

FIELD: electricity.

SUBSTANCE: invention pertains to the field of electric engineering, in particular to eclectic motors with permanent magnets used, for example, for submerged electric drive without formation fluid lifting. The motor rotor comprises a key-slotted shaft, the core pack made of electric steel plates with alternating poles, and each of them is formed by two V-mounted prismatic permanent magnets with tangential magnetism faced to the pole by its one polarity. The magnets are placed in slots of the pack plates and do not touch each other. The number of magnets is twice bigger than the number of poles. At inner surface of poles of both polarities there are slots along the pole axis.

EFFECT: improvement of the motor output performance due to scattering of magnetic flow at maintained rotor strength.

5 cl, 5 dwg

Electrical machine // 2534225

FIELD: electricity.

SUBSTANCE: invention is related to electric engineering and may be used predominantly for electrical machine constructions, and namely for AC electronic motors and synchronous generator with excitation from permanent magnets. The suggested electrical machine comprises a stator with laminated slots, multiphase armature winding and rotor with slots where permanent magnets are placed thus forming a system with alternating poles, at that active length L of the rotor is selected equal to (2.8-3.1)τ, where τ is polar pitch of the rotor.

EFFECT: improvement of power and dynamic performance of the electrical machine due to increase efficiency of active material usage.

1 dwg

Synchronous machine // 2529182

FIELD: electricity.

SUBSTANCE: invention relates to the field of electrical engineering, in particular to synchronous machines with combined excitation. According to the given invention on the armature of the synchronous machine containing a multiphase armature winding and face laminated core with multiphase sub-excitating winding, the latter is combined with the armature winding on a part of active length of armature core and forms a part of active length of its coil. The magnetic circuit of the rotor with permanent magnets is made short, forming a free ring band on a part of active length of the armature core, where the additional ring-type magnetic circuit of claw type fixed on the rotor is installed. In a ring-type magnetic circuit in its internal ring hollow the stator-fastened magnetic circuit with a toroidal field coil is installed, which is connected to the machine control and regulation system. During the operation of the synchronous machine the sub-excitation link of claw type with the toroidal winding creates an additional regulated magnetic flux, the direction of which can be co-directional or opposite with the main flow of permanent magnets, that ensures the operation of the synchronous machine both in normal, and in abnormal modes of operations with a possibility of excitation field dampening.

EFFECT: expansion of the range of regulation of output voltage at simultaneous provisioning of possibility for excitation field dampening.

2 dwg

Inductor machine // 2524166

FIELD: electricity.

SUBSTANCE: inductor machine includes stator installed in magnetically soft housing (1) and made in the form of two laminated packs (2) and (3) from magnetically soft material with teeth (4) on their inner surface, working winding (5), the turns of which are located in slots between teeth (4) restricted as to height with backs (6) of those packs, two rotor packs (7) and (8), which are installed inside bores of stator packs (2) and (3), and excitation winding (9) installed between rotor packs (7) and (8). According to the invention, on outer surface of each stator pack (2) and (3) a provision is made for external teeth (10) oriented along the machine axis, the number of which is equal to the number of stator teeth on its inner surface, external teeth (10) are located above sections of backs (6) of each stator pack, sections of backs (6) under external teeth (10) are located between internal teeth of stator packs (2) and (3), and on inner side of housing (1) there are slots for arrangement of external teeth (10) of stator packs (2) and (3).

EFFECT: reduction of losses in housings of inductor machines and improvement of their efficiency, and reduction of time for transient processes.

2 cl, 4 dwg

Electric machine // 2523029

FIELD: electricity.

SUBSTANCE: electric machine includes case with end screens, housing a laminated stator core with slots where winding coils are located and fixated by wedges, with rotor positioned inside stator cavity and including inducer actuating poles, permanent magnets, no-magnetic wedges and shaft, so that rotor length exceeds inducer length. Rotor end sections are made in the form of cylindrical bushings out of non-magnetic material, flush-mounted on external surface of inducer, rotor bearing unit allows for static gas and dynamic gas support, and for that purpose external rotor features cylindrical surface and is positioned inside cylindrical cavity of the bushing fixated in the stator cavity with gas supply for stator surface cooling, while case cavity has cooling gas supply and drain, and for that purpose internal surface of the case features longitudinal ducts joining radial ventilation ducts made between stator core stacks. According to invention, stator can be vented separately by at least two pipes in the case for cooling gas supply/drain to/from the case volume occupied by the stator, the bushing has longitudinal lugs matching stator core slots in number, positions and cross-section and fit into the slots, slot vent gap is left between lug surface and slot wedge, lengthwise holes are made in longitudinal lugs of the bushing and connect to radial feed orifices opened into internal cavity of the bushing, cylindrical bushings out of isolating material are installed in the case cavity coaxially to stator core cavity and attached by their ends to the ends of outmost stator core stacks, external surface on the ends facing end screens feature o-ring pairs, and end screen junction with the case is sealed. Cylindrical bushings serve as external cartridges of radial gas-dynamic leaf bearings, and rotor end sections serve as trunnions of the bearings, in addition the electric machine features at least one axial gas-dynamic leaf bearing, and orifices are made in end screens, with orifice inlets connected to lubricating gas source and outputs joining annular slot between o-ring pairs, which in its turn joins longitudinal through holes of the cylindrical bushing. Besides, a screen features pipe connected to separate source of cooling gas and joining permanent magnet cooling ducts formed by slot bottom section and permanent magnet surface facing them, via end sections of inducer, and at the opposite case end the ducts are connected to process gap of axial gas-dynamic leaf bearing which in its turn is connected to gas collector.

EFFECT: efficient cooling of stator winding and core, reduced weight and dimensions, improved service life of electric machines, minimum rotor bend, efficient cooling of permanent magnets, extended rotor stability range due to damping by radial gas-dynamic leaf bearings, prevention of rotor jamming at high circular velocities in vicinity of gas-dynamic leaf bearings.

4 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: invention is related to the area of electric engineering and namely to electric machines with permanent-magnet excitation, and it may be used in electric machine engineering. At that the invention ensures improved rotation uniformity, enhanced energy indicators, reduction of noise and vibration level for the magnetoelectric machine. In the suggested magnetoelectric machine including armature with winding laid in z slots and non-salient pole rotor with permanent magnets the armature slots are bevelled at the angle α corresponding to an integer number of tooth harmonic periods.

EFFECT: decreasing reactive moment pulsation for the magnetoelectric machine.

Power generator // 2448405

FIELD: electricity.

SUBSTANCE: power generator comprises a rotary part with rectangular cores - magnetic conductors from soft magnetic material evenly arranged along the circumference, and a non-rotary part. The non-rotary part comprises a vessel element, a hub installed on a bearing on the vessel element as capable of rotation, multiple inductors stretching in radial direction and arranged substantially in a circular row and comprising L-shaped cores from soft magnetic material and joined permanent magnets with alternation of poles polarity. Besides, the pitch of inductors is twice less than the pitch of cores-magnetic conductors of the rotary part. In radial slots formed by L-shaped cores and permanent magnets there is a coil winding that belongs to the non-rotary part. Poles of inductors face the rotary part, are aligned in axial direction and are separated with working gaps from cores-magnetic conductors arranged on the rotary part. Multiple inductors on the non-rotary part in the specified circular row are made as arranged on sections of the vessel element in the form of N ≥ 2 combinations of groups with identical even number of inductors in each group with gaps between groups that are more than one pitch of inductors arrangement in the group, and the winding is separated into identical coils, besides, each of them covers one group of the specified inductors, and the energy that is generated in them is discharged via conductors of the non-rotary part. Each combination of inductor groups comprises three neighbouring groups, at the same time each second group in the combination is displaced by a whole number of periods plus 1/3 of the inductors pitch, and each third group in the combination - by a whole number of periods plus 2/3 of the inductors pitch relative to the first group. At the same time combinations of groups are arranged along the circumference evenly with the shift of 360/N degrees. The rotary part rests against the hub with the bearing installed on the vessel element, or on rollers with bearings installed on sections of the vessel element that carry groups of inductors.

EFFECT: improved technical properties of a power generator due to increased diameter of a rotary speed, a linear speed, a number of cores-magnetic conductors, and accordingly current frequency at limited frequency of propeller rotation, and exclusion of total tangential and radial oscillations of forces specified by gravity forces acting between inductors and cores-magnetic conductors, simplified design by elimination of a multiplicator.

4 dwg

FIELD: electricity.

SUBSTANCE: invention refers to the design of non-contact magnetic electric machines with electromagnetic reduction with axial excitation from constant magnets and can be used in automation systems, in military and space engineering, in domestic equipment, as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, lifting mechanisms, electric drives of concrete mixers, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of the shaft rotation, as direct drives without using any mechanical reduction gears, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous frequency converters, and as controlled stepped hybrid motors. Non-contact magnetic electric reduction machine with axial excitation includes stator the armature core of which consists of insulated electrotechnical steel plates with high magnetic permeability, and has salient poles on inner surface of which there are elementary teeth, coil m-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, and ferromagnetic rotor without winding, which contains inductor with odd and even toothed cores with equal number of teeth on each core; odd and even toothed cores of inductor are made in the form of packs consisting of insulated electrotechnical steel plates with high magnetic permeability; number of inductor cores is not less than two; even inductor cores are offset relative to odd ones in tangential direction through the half of their toothed division; between magnetic conductors of inductor there located are ring-shaped layers of segmental constant magnets axially magnetised in one direction. At that, for serviceability of non-contact magnetic electric reduction machine with axial excitation there shall be met certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each inductor core and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions of non-contact magnetic electric reduction machines with axial excitation with high electromagnetic reduction and enlarged capabilities of their application at maintaining high energy parameters and operating characteristics.

5 cl, 5 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: non-contact reduction machine with axial excitation includes stator with housing made from soft magnetic material with odd and even packs of stator, which are laminated and consist of insulated electrotechnical steel plates with high magnetic permeability, and the number of which is not less than two, non-magnetic shaft; stator packs contain salient poles uniformly distributed along cylindrical surface, on inner surface of which there are elementary teeth; stator packs in tangential direction are located so that axes of their salient poles located opposite each other in axial direction coincide; odd and even rotor packs the number of which is equal to number of stator packs are pressed on the appropriate odd and even magnetic conductors of rotor, which are put on non-magnetic bushing installed on non-magnetic shaft; rotor packs contain teeth uniformly distributed along cylindrical surface; even packs of rotor are offset relative to odd rotor packs in tangential direction through the half of tooth division of rotor pack; between rotor magnetic conductors there located are ring-shaped layers of constant magnets axially magnetised in one direction; number of ring-shaped layers of constant magnets is one less than number of rotor packs; on salient poles of stator packs there is coil m-phase armature winding each coil of which in axial direction envelopes the appropriate salient poles of even and odd stator packs of one pole of each pack; excitation winding of inductor is made in the form of ring-shaped coils with longitudinal axis coinciding with longitudinal axis of machine; number of ring-shaped coils of excitation winding of inductor is one less than the number of stator packs. At that, for serviceability of machine there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each pack of rotor and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions with possibility of using frame coils of armature winding of non-contact electric reduction machines with axial combined excitation and using electromagnetic reduction in wide ranges at providing high energy parameters and operating characteristics with possibility of smooth and deep control by means of output parameters.

9 cl, 5 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: invention refers to low-speed high-torque electric motors, electric drives and generators, to the design of non-contact electric machines with electromagnetic reduction with combined excitation of inductor and can be used in automation systems as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, direct drives in domestic equipment, electric drives of high and average power of ships, trolleybuses, trams of the underground, concrete mixers, lifting mechanisms, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of its rotation, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous generators of frequency converters and as controlled stepped motors. Non-contact reduction machine with salient-pole armature includes stator with housing made from soft magnetic material with odd and even packs of stator, which are laminated and consist of insulated electrotechnical steel plates with high magnetic permeability, and the number of which is not less than two, non-magnetic shaft, stator packs contain salient poles uniformly distributed along cylindrical surface, on inner surface of which there are elementary teeth, stator packs in tangential direction are located so that axes of their salient poles located opposite each other in axial direction coincide; odd and even rotor packs the number of which is equal to number stator packs are pressed on the appropriate odd and even magnetic conductors of rotor, which are put on non-magnetic bushing installed on non-magnetic shaft, rotor packs contain teeth uniformly distributed along cylindrical surface, even packs of rotor are offset relative to odd rotor packs in tangential direction through the half of tooth division of rotor pack; between rotor magnetic conductors there located are ring-shaped layers of constant magnets axially magnetised in one direction, number of ring-shaped layers of constant magnets is one less than number of rotor packs; on salient poles of stator packs there is coil m-phase armature winding each coil of which in axial direction envelopes the appropriate salient poles of even and odd stator packs of one pole of each pack; excitation winding of inductor is made in the form of ring-shaped coils with longitudinal axis coinciding with longitudinal axis of machine; number of ring-shaped coils of excitation winding of inductor is one less than the number of stator packs. At that, for serviceability of machine there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each pack of rotor and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions of non-contact electric reduction machines with salient-pole armatures with combined excitation and application of electromagnetic reduction in wide ranges at providing high energy parametres and operating characteristics with possibility of smooth and deep control by means of output parametres.

9 cl, 5 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: invention refers to low-speed high-torque electric motors, electric drives and generators, to the design of non-contact magnetic electric machines with electromagnetic reduction and can be used in automation systems, in domestic equipment, as motorised wheels, motorised drums, starter-generators, electric steering wheel boosters, lifting mechanisms, electric drives of concrete mixers, belt conveyors, liquid transfer pumps, mechanisms with high torques on the shaft and low frequencies of the shaft rotation, as direct drives without using any mechanical reduction gears, as well as wind-driven generators, hydraulic generators, high-frequency electric generators, synchronous frequency converters, and as controlled stepped motors. Non-contact magnetic electric reduction machine with salient-pole armature includes stator the armature core of which consists of insulated electrotechnical steel plates with high magnetic permeability, and has salient poles on inner surface of which there are elementary teeth, coil m-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, and ferromagnetic rotor without winding, which contains inductor with odd and even toothed cores with equal number of teeth on each core, odd and even toothed cores of inductor are made in the form of packs consisting of insulated electrotechnical steel plates with high magnetic permeability, number of inductor cores is not less than two, even inductor cores are offset relative to odd ones in tangential direction through the half of its toothed division; between magnetic conductors of inductor there located are ring-shaped layers of segmental constant magnets axially magnetised in one direction. At that, for serviceability of non-contact magnetic electric reduction machine with salient-pole armature there shall be certain relations between the number of salient poles of armature, number of elementary teeth on salient pole of armature, number of salient poles of armature in phase, total number of armature teeth, number of teeth on each inductor core and number of phases of m-phase armature winding.

EFFECT: manufacture of high-technology constructions of non-contact magnetic electric reduction machines with salient-pole armatures with deep electromagnetic reduction and enlarged capabilities of their application at maintaining high energy parametres and operating characteristics.

5 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention relates to the field of electric engineering and may be used in three-phase machines with excitation from permanent magnets. Proposed three-phase synchronous motor consists of three-phase stator, winding of which create rotary magnetic field, and rotor, which comprises bushing of non-ferromagnetic material, strip of excitation from ferromagnetic plates with layers of plates of permanent magnets and additional poles of ferromagnetic material with layers of non-ferromagnetic material installed along radial axes of additional poles.

EFFECT: provides for maximum efficiency of motor determined by ratio between useful mechanical capacity developed by motor (Pmech use) and electric power consumed by motor (Pel cons).

5 dwg

FIELD: electricity.

SUBSTANCE: invention relates to the field of electric engineering and designs of contactless reducer electromagnetic machines with electromagnet reduction, intended for use as motor - wheels, motor - drums, direct drives in electrical appliances (electric meat grinders, washing machines, etc), electric drives of concrete mixers, weight-lifting mechanisms, belt conveyors, pumps for pumping of fluids, mechanisms with high torque on shaft and low frequencies of shaft rotation, and also as high-frequency electric generators. Proposed contactless reducer electromagnet machine comprises stator with explicit poles, on inner surface of which there are elementary cogs, m-phased focused anchor winding of which consists of coils, each coil covering an appropriate anchor pole, and winding-free ferromagnetic rotor, comprising two inductor cores displaced relative to each other in tangential direction by half of gear division, with toroid permanent magnet magnetised in axial direction and installed between cores of inductor, to develop magnetic flow of excitation. At the same time certain ratios are maintained between number of anchor poles, number of elementary teeth on anchor pole, number of anchor poles in phase, common number of anchor teeth, number of teeth on each inductor core and number of phases of anchor winding of contactless reducer electromagnetic machine.

EFFECT: high power and operational indices, high specific rotary torque on shaft and high electromagnetic reduction of rotation frequency in mode of electric motor, high specific capacity at high frequencies of electromotive force in mode of electric generator.

12 cl, 14 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: single-phase contact-free electromagnetic generator includes stator with anchor core composed of insulated electrical steel sheets of high magnetic inductivity and features distinct poles with single-phase anchor coil winding where each coil is positioned at respective distinct anchor pole, and winding-free ferromagnetic rotor including inducer with even and odd cores with the same number of distinct poles in each core. Odd and even inducer cores are made in the form of banks assembled of insulated electric steel sheets of high magnetic inductivity, inducer features at least two cores, even inducer cores are shifted against odd cores in tangential direction for a pole half-pitch of inducer core, inducer cores are set on respective magnetic conductors of inducer, annular layers of segmental permanent magnets magnetised in the one direction are positioned between magnetic conductors of inducer. Certain ratio should be maintained between number of distinct anchor poles and number of distinct poles in each inducer core, and between pole arc width of distinct anchor poles and pole arc width of distinct poles of each inducer core.

EFFECT: high reliability and manufacturability of single-phase electromagnetic generator design, good energy and operational characteristics.

9 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: invention relates to peculiarities of design of contactless electric machines with electromagnet reduction and may be used in systems of automatics, as motor-wheels, motor-drums, starter-generators, electric steering boosters, electric drives of large and medium capacity vessels, transport means, concrete mixers, weight-lifting mechanisms, belt conveyors, pumps for liquids pumping, mechanisms with high torques on shaft and low frequencies of its rotation, and also in wind generators, hydraulic generators, high-frequency electric generators and synchronous generators of frequency converters. Proposed contactless redactor electric machine with combined excitation comprises teethed stator with odd and even laminated packs from insulated sheets of electrotechnical steel with high magnetic permeability with explicit poles, on inner surface of which there are elementary teeth arranged. Besides packets of stator in tangential direction are arranged so that axes of their explicit poles located opposite to each other in axial direction in all packets of rotor coincide, and between odd and even packets of stator there is winding of inductor excitation, arranged in the form of ring-shaped coils with longitudinal axis that matches longitudinal axis of machine, coil m-phase winding of anchor, each coil of which is placed on according explicit poles of stator packets and covers one explicit pole of every packet each, and winding-free ferromagnetic rotor with non-magnetic bush, on which odd and even magnetic conductors of rotor are placed with odd and even rotor packets pressed on them as according charged packets made of insulated sheets of electrotechnical steel with high magnetic permeability, and their number equals number of stator packets, with identical number of teeth on each rotor packet, besides even packets of rotor are shifted relative to odd ones in tangential direction by half of teeth division of rotor packet, and between odd and even magnetic conductors of rotor there are circular layers of permanent magnets axially magnetised in the same direction. At the same time certain ratios are maintained between a number of explicit poles in each stator packet, number of elementary teeth at each explicit pole of stator packet, number of elementary teeth on each explicit pole of stator packet, number of explicit poles of each stator packet in phase, number of teeth of each stator packet, number of teeth in every rotor packet and number of phases of m-phase winding of anchor in contactless redactor electric machine with combined excitation.

EFFECT: invention provides for high power and operational indices, high specific rotation torque on shaft and high electromagnetic reduction of rotation frequency in mode of electric motor, and high specific power at high frequencies of EMF in mode of electric generator.

18 cl, 11 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: invention is related to the field of electric engineering, in particular to slow-speed high-torque electric motors, electric drives and generators, is related to peculiar features of design in contactless electromagnetic electric machines with electromagnetic reduction and may be used in automatics systems, as motorised wheels, motorised drums, starter-generators, electric steering booster, direct drives in household appliances, electric drives of concrete mixers, weight-lifting mechanisms, belt conveyors, pumps for pumping of liquids, mechanisms with high torques on shaft and low frequencies of its rotation, and also as wind power generators, hydrogenerators, high-frequency electric generators and synchronous generators of frequency converters. Proposed contactless reducer electromagnetic machine with multipack inductor comprises stator, anchor core of which is assembled from insulated sheets of electrical steel with high magnetic permeability and has explicitly expressed poles, on internal surface of which there are elementary teeth arranged, coil m - phase winding of anchor, each coil of which is placed on according explicitly expressed pole of anchor, and winding-free ferromagnetic rotor, comprising inductor with odd and even teethed cores with identical number of teeth on each core, odd and even teethed cores of inductor are arranged in the form of packets, which are assembled from insulated sheets of electrical sheet with high magnetic permeability, number of inductor cores is at least two, even cores of inductor are displaced relative to odd ones in tangential direction by half of teeth division of inductor, between magnetic conductors of inductor there are circular layers arranged from segmental permanent magnets axially magnetised in one direction. Besides certain ratios are maintained between number of explicit anchor poles, number of elementary teeth on explicit anchor pole, number of explicit anchor poles in phase, general number of anchor teeth, number of teeth at each inductor core and number of phases in m - phase winding of anchor of contactless reducer electromagnetic machine with multipack inductor.

EFFECT: provision of high energy and operational indices, high specific rotary torque on shaft and high electromagnetic reduction of rotation frequency in mode of electric motor, and also high specific power at high frequencies of EMF in mode of electric generator.

12 cl, 15 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: fixed part of the electrical machine consists of laminated magnetic core stacked out of separate steel insulated plates jointed into a pack by weld seams made at outer side of the magnetic core. The magnetic core is fixed in the housing by spline connection centred along lateral surfaces. In the housing there is a cooling main placed in the middle part of the magnetic core from outside. Between the housing and the stator magnetic core there is a circular cooling chamber divided by splines into circular sectors insulated from each other, at that cooling liquid is supplied from the cooling main. The rotatable part consists of the magnetic core, as boss and a setting disc of the rotor angular position sensor having circular toothed surface shaped as a truncated cone.

EFFECT: design of an electrical machine with forced liquid cooling having high power performance and low noise level.

15 cl, 2 dwg

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