Axial electric motor

FIELD: electrical engineering.

SUBSTANCE: axial electric motor is designed to be stationary and open in a plot of land, the body consisting of the lower tier including a foundation slab with the lower support assembly and the upper tier including a star-shaped spherical framework attached to the foundation, the framework symmetrically composed of prop beams tensioned in the centre with an axial support and balancing assembly. Installed between the lower support assembly and the axial support and balancing assembly is a large diameter runner wheel on the end face whereof the short-circuited rotor proper is installed separated from the magnetic conductor of the stator, erected on the foundation slab on a raised platform, with an air gap. The runner wheel shaft is connected to the load via a clutch.

EFFECT: ensuring large magnitude torques combined with design simplification.

3 dwg

 

The invention relates to the alternative energy industry, and more particularly to an electric asynchronous AC motors with squirrel-cage rotor.

Known axial electric AC motor, containing a closed housing with fasteners to a support placed therein a stationary stator consisting of a core with a winding and a movable (rotatable) squirrel-cage rotor with a horizontal axis of rotation, mounted in flange bearings on both sides of the stator fastened to the body. This engine can be installed in any position in space and not tied to one place. Such electric motors are well-developed industry, are available in different items and are widely used. See, for example, the book Design of electrical machines, the authors Ispropyl, Bchkalov and other ed. "High school", 2002, Moscow, p.29-32.

The disadvantage of these motors - small height of the axis of rotation of the rotors, limiting the outer diameter of the stator core and does not allow to achieve more power.

Loved prototype of the claimed design special technical literature and patent Fund was not found.

The purpose of the invention is the creation of a special axial electric AC motor simple design with the rotor greatly the second diameter (of the order of several meters or more) with the rotational speed of 50-300 rpm, developing a torque of large magnitude.

This objective is achieved in that the engine is made on the land immovable fixed open with a fixed stator and a movable (rotating) rotor with a vertical axis of rotation, a housing with upper and lower supporting units made horizontal Foundation in the form of a circle, the circumference of which is erected a circular podium with a fortified it on top of verified horizontal mounting plate, on which the assembled ring core of the magnetic circuit of the stator height h of laminated electrical steel, pressed presser plate and tightened rows of studs with the mounting plate into the slots of the core of the laid winding of the stator, the impeller consists of a vertical shaft and radially-sequentially bonded with him in a horizontal plane of the hub, a disk farm and actually squirrel-cage rotor, the lower part of the shaft is installed in the center of the circle of the Foundation at the bottom of the reference node in the oil bath bearings, the upper part of the shaft mounted in the upper reference unit, which consists of persistent columns, resistant beams and axial support-centering of the site in which the thrust of the column is built symmetrically around the podium with equal space between them with power Foundation, United integrally with the Foundation, in the above provided with fastening elements, affixed to the outer ends of the thrust beams, and the inner ends of their bonded with an axial abutment-centering hub, is provided with radial bearings, installed in the upper part of the impeller shaft connected through a clutch with the consumer, the hub is made in the form of a disk and is connected in the Central part with the shaft by a node transmitting torque, and with external disk farm with a diameter of several meters or more, consisting of the radial-circular surround rigid frame with top and bottom panels are provided at the peripheral end part of the actual squirrel-cage rotor, a cylinder made of aluminum alloy radial thickness z with outer radius R from the axis of the shaft, the height h, equipped with embedded at equal intervals surface flush with the outer end surface of the rods of copper alloy, United integrally at the top and bottom copper bars in the form of hoops, rigidly connected with the radial-circular frame, impeller height set so that it actually squirrel-cage rotor is opposite the stator core and coincides with it in height, divided around the entire circumference of the cylinder air gap size δ, the stator winding is connected with the external current source.

Design asynchronous electr the economic engine shown in the drawings. Figure 1 shows schematically the design of the axial electric motor, General view, cut along the vertical diametral plane ("Ah"). Figure 2 shows schematically the design of the axial electric motor, top view. Figure 3 schematically shows the active inductive part of the impeller axial electric motor, cut along the vertical radial plane.

Legend text.

R (m) radius of the rotor axial electric motor, the distance from the shaft axis to the outer surface of the cylinder made of aluminum alloy

z (mm) radial thickness of the cylinder of aluminum alloy

h - (mm) height of the stator core, the height of the cylinder of aluminum alloy the actual rotor (in the technical literature this quantity is denoted by the symbol, as directed along the axis of the machine),

δ - (mm) the size of the air gap between stator and rotor in long-term Parking position at low ambient temperatures.

δ - (mm) the size of the air gap between stator and rotor in working condition (long-term steady state operation at rated speed, rated current, rated or elevated temperatures).

Position in the drawings.

1. land, 11. cylinder aluminum alloy
2. Foundation12. rods of copper alloy
3. podium13. copper bus
4. mounting plate,14. the lower reference node
5. the stator15. the thrust of the column
6. the presser plate,16. resistant beams
7. tightening studs,17. axial reference-centering the node
8. the stator winding,the18. the clutch.
9. Val
10. the impeller

Axial electric motor is arranged (see Fig 1, 7). On a certain site 1 land prepare horizontal area, the size of the order of 1.5 R, it performs a horizontal Foundation 2. In accordance with the paperwork for the future lay the Foundation of technological tunnels, pipelines, cables, etc. and in the base install manholes, anchors and sensors equipment. Around the circumference of the Foundation of the building podium 3, which is supplied anchors kriplani the mounting plate 4, which along its outer surface must be strictly aligned in the horizontal plane. On the installation plate 4 constructing the stator 5, the annular core of the magnetic circuit of which the height h is assembled from plates laminated electrical steel and pressed presser plate 6 two rows garter pins 7. When assembling the stator 5 comply with the terms: no burrs on the plates of the stator and accurate within 1-2 mm, the internal diameter of the magnetic stator size (R+δp) mm, after which it grooves stack winding 8 of the stator wires which lead to the three-phase current source.

The impeller 10 comprises a vertical shaft 9 and radially sequentially bonded with him in a horizontal plane of the hub, a disk farm and actually squirrel-cage rotor. The hub is made in the form of a disk and is connected in the Central part with the shaft 9 through node transmission torque, for example, keyed or splined connection, and on the outer side of the disk farm, made radial-circular surround frame with top and bottom trim. Disk farm and the hub are connected by a detachable screw connection.

In the peripheral end of the impeller 10 is equipped with the actual squirrel-cage rotor, which is made of a cylinder of aluminum alloy is 11 (see 3) radial thickness z, the outer radius of which is R from the axis of the shaft 9, the height h, equipped with embedded at equal intervals surface flush with the outer end surface of the rod 12 of a copper alloy, United integrally, for example by welding, on the top and bottom copper bars 13 in the form of hoops, rigidly connected with the radial-circular frame.

The impeller 10 axial electric motor can be made different in size from a diameter of the order of 1.5-2.5 meters to tens of meters. From the diameter depends on its design, the materials used, manufacturing techniques, Assembly and methods of delivery to the consumer. At small sizes of the impeller 10 (figure 1), it performs a single all-in-one site and transported in special containers to the place of construction of the axial electric motor. The larger size of the impeller 10 of its design and manufacturing technology are compounded by the need to perform a number of contradictory requirements, that is the subject of a separate technical solutions.

The impeller 10 is installed in the center of the circle of the Foundation 2. The lower part of his shaft 9 mounted in the lower reference node 14 in the bearings supporting-oil bath. The upper reference node with the shaft 9 is made as follows. On the same plot 1 land for runway 3 in a circle, with equal intervals in the scrap construct thrust of the column 15, performing integral with the base 2, the upper part of them is equipped with fasteners, such as bolts with which they are connected with the outer ends of the thrust beams 1-6, the inner ends of which are through bolted connection is bonded with an axial abutment-centering hub 17, is provided with radial bearings, in which are mounted the upper part of the shaft. 9. The number of resistant beams 16 depends on the diameter of the impeller 10 and is defined in the strength calculation of the hull, the upper reference node must ensure the rigidity of the whole structure of the axial electric motor with a maximum torque of the impeller 10.

The impeller 10 is set to its squirrel-cage rotor height h was just installed in front of the stator core 5 and coincides with it at the height h, and the outer surface of the squirrel-cage rotor of the impeller 10 and the inner surface of the magnetic circuit of the stator 5 around the entire circumference should separate installation (side) air gap δ with a constant value, approximately 6-9 mm.

When creating the impeller 10 at a certain rpm and the specified torque must be used not only for calculation of strength in static and dynamic calculation, taking into account that the mechanical stresses in all the crystals should not exceed the ultimate strength of the material, and in the most dangerous and important structural elements is short-circuited copper tires-rims should not exceed the yield strength of copper.

In addition, the radial deformation of the flight from the moment of centrifugal forces (elastic deformation stretching), summed with the longitudinal deformation from thermal expansion in the steady-state operating mode at rated load should not exceed a certain value, being at the same time useful deformation, reducing the air gap to the value δ, positively influencing the characteristics of the asynchronous electric motor.

Axial electric engine works: when winding 8 of the stator to a source of alternating electric current, the magnetic circuit of the stator core 5 occurs rotating electromagnetic field which interacts with the actual squirrel cage impeller 10 and rotates it with the estimated angular frequency. Circumferential force acting at a distance R creates a continuous torque estimated value of the shaft 9, which through the clutch 18 actuates the load pump of large capacity for supplying pulp (heavy rock with water) on aggregates of the concentrator.

Technical efficiency of the invention that the design of cheap axialis the th electric AC motor, transmitting the load torque of considerable size.

Axial electric AC motor, containing a closed housing with fasteners to a support placed therein a stationary stator consisting of a core with a winding, and a movable (rotatable) squirrel-cage rotor with a horizontal axis of rotation, mounted in flange bearings on both sides of the stator attached to the housing, characterized in that the engine is made on the land immovable, fixed open with a fixed stator and a movable (rotating) rotor with a vertical axis of rotation, a casing, upper and lower supporting units, made a horizontal Foundation in the form of a circle, the circumference of which built circular podium with a fortified it on top of verified horizontal mounting plate, on which the assembled ring core of the magnetic circuit of the stator height h of laminated electrical steel, pressed presser plate and tightened rows of studs with the mounting plate into the slots of the core of the laid winding of the stator, the impeller consists of a vertical shaft and radially sequentially bonded with him in a horizontal plane of the hub, disk farm, and the actual squirrel-cage rotor, the lower part of the shaft is installed in the center of the circle Foundation is in the lower reference node in the oil bath bearings, the upper part of the shaft mounted in the upper reference unit, which consists of persistent columns, resistant beams and axial support-centering of the site in which the thrust of the column is built symmetrically around the podium with equal space between them with power Foundation, United integrally with the base, the top is equipped with fastening elements affixed to the outer ends of the thrust beams, and the inner ends of their bonded with an axial abutment-centering hub, is provided with radial bearings, installed in the upper part of the impeller shaft connected through a clutch with the consumer, the hub is made in the form of a disk and is connected in the Central part with shaft through node transmission torque, and external - disk-farm with a diameter of several meters or more, consisting of the radial-circular surround rigid frame with top and bottom panels are provided at the peripheral end part of the actual squirrel-cage rotor, a cylinder made of aluminum alloy radial thickness z with outer radius R from the axis of the shaft height h, equipped with embedded at equal intervals surface flush with the outer end surface of the rods of copper alloy, United integrally at the top and bottom copper bars in the form of hoops, rigidly connected with the radially-calciumcalcium, the impeller height set so that it actually squirrel-cage rotor is opposite the stator core and coincides with it in height, divided around the entire circumference of the cylinder air gap size δ, the stator winding connected to an external power source.



 

Same patents:

FIELD: electricity.

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6 cl, 4 dwg

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9 cl, 13 dwg

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1 dwg

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EFFECT: provision for the rotor system rotors strength margin and increasing the proper frequency to a value in excess of rotation rate.

16 cl, 3 dwg

FIELD: electrical engineering.

SUBSTANCE: magnetoelectric machine rotor system consists of two coaxial rotors. The external (outer) rotor is designed in the shape of a hollow cylinder of high-strength, non-magnetic and electrically non-conductive material with constant magnets uniformly fixed thereon; the magnets are magnetised in a radial direction and have alternating polarity. There are gaps between the external rotor magnets wherein the retaining elements are positioned made of a non-magnetic and electrically non-conductive material. The internal rotor is designed in the shape of a shaft of a magnetically soft material, toothed on the outside, the internal rotor teeth number equal to that of the external rotor permanent magnets. The internal rotor radial bearings are positioned outside the external rotor bearings. The external rotor axial bearing is represented by axial magnetic forces of interaction between the permanent magnets of the external rotor, the stator core and the shaft.

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16 cl, 3 dwg

Electric machine // 2474945

FIELD: electricity.

SUBSTANCE: electric machine comprises a tight body, in the cavity of which a laminated stator core is installed with open slots, where winding coils are arranged, and a rotor. At the same time the laminated stator core is equipped with radial packet-to-packet ventilation channels, aerodynamically communicated longitudinal channels of the body with inlet holes communicated via a filter with environment, conductors of the winding of each stator slot are fixed with a wedge and a key insert contacting with it, the cross section of which is arranged as capable of fixing the key insert back under the slot wedge, and the section of the ledge corresponds to the section of the slot splint, the surface of the key insert back along its entire length is equipped with a longitudinal chute communicated with packet-to-packet ventilation channels of the stator core, volumes of key inserts protruding above the surface of the stator core cavity are combined into a tubular bushing, preferably made from segments, with formation of the inner surface of cylindrical shape, besides, in the cavity of the body there are cylindrical bushings installed, the diameter of the cavity in which is equal to the diameter of the tubular bushing, between ends of the stator core and ends of cylindrical bushings facing them there are thrust rings installed, the cavity of which exceeds the diameter of the cylindrical cavity of the stator core, equipped with a collar, covering a part of the outer surface of the cylindrical bushing. Thrust rings are made of non-magnetic material and are fixed with a stator core, cylindrical bushings are installed as capable of radial displacement relative to the longitudinal axis of the cylindrical cavity of the stator core, for this purpose contacts of bushings with the body, end shield and thrust rings are equipped with sealing rings made with the possibility of elastic deformation radially and along the relatively longitudinal axis of the stator core. The electric machine comprises an inductor with the outer cylindrical surface made of poles, permanent magnets, non-magnet wedges, a shaft, the length of which exceeds the length of the inductor, besides, with the inductor ends there are end cylindrical bushings fixed rigidly, which are made of a non-magnetic material and arranged aflush with the outer surface of the inductor.

EFFECT: invention provides for minimum sagging of a rotor, improved cooling of a rotor and a stator winding with simultaneous reduction of weight and dimension indices and higher resources of electric machines, including those operating under higher and high frequencies of rotation.

3 cl, 2 dwg

Electric machine // 2474945

FIELD: electricity.

SUBSTANCE: electric machine comprises a tight body, in the cavity of which a laminated stator core is installed with open slots, where winding coils are arranged, and a rotor. At the same time the laminated stator core is equipped with radial packet-to-packet ventilation channels, aerodynamically communicated longitudinal channels of the body with inlet holes communicated via a filter with environment, conductors of the winding of each stator slot are fixed with a wedge and a key insert contacting with it, the cross section of which is arranged as capable of fixing the key insert back under the slot wedge, and the section of the ledge corresponds to the section of the slot splint, the surface of the key insert back along its entire length is equipped with a longitudinal chute communicated with packet-to-packet ventilation channels of the stator core, volumes of key inserts protruding above the surface of the stator core cavity are combined into a tubular bushing, preferably made from segments, with formation of the inner surface of cylindrical shape, besides, in the cavity of the body there are cylindrical bushings installed, the diameter of the cavity in which is equal to the diameter of the tubular bushing, between ends of the stator core and ends of cylindrical bushings facing them there are thrust rings installed, the cavity of which exceeds the diameter of the cylindrical cavity of the stator core, equipped with a collar, covering a part of the outer surface of the cylindrical bushing. Thrust rings are made of non-magnetic material and are fixed with a stator core, cylindrical bushings are installed as capable of radial displacement relative to the longitudinal axis of the cylindrical cavity of the stator core, for this purpose contacts of bushings with the body, end shield and thrust rings are equipped with sealing rings made with the possibility of elastic deformation radially and along the relatively longitudinal axis of the stator core. The electric machine comprises an inductor with the outer cylindrical surface made of poles, permanent magnets, non-magnet wedges, a shaft, the length of which exceeds the length of the inductor, besides, with the inductor ends there are end cylindrical bushings fixed rigidly, which are made of a non-magnetic material and arranged aflush with the outer surface of the inductor.

EFFECT: invention provides for minimum sagging of a rotor, improved cooling of a rotor and a stator winding with simultaneous reduction of weight and dimension indices and higher resources of electric machines, including those operating under higher and high frequencies of rotation.

3 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: rotor, in particular, of a turbogenerator comprises a winding made of coils (1) from current-conducting strands with turns covering a pole and laid into slots (2), at the same time, according to the invention, each coil (1) has concentric arrangement of turns placed in one layer in all slots (2), related to the pole division of the rotor. This invention is especially relevant for synchronous nonsalient-pole electric machines with air cooling.

EFFECT: higher capacity of a synchronous nonsalient-pole electric machine without variation of its rotor dimensions.

2 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: in a magnetoelectric generator, the rotor of which comprises a disc (1) fixed on a shaft, and on the disc there is a ring-shaped row of permanent magnets (2) with alternating polarity, arranged as equidistant relative to each other, and the stator comprises two parallel plates (3,4), between which there are windings, besides, stator windings are arranged on U-shaped cores from electrotechnical steel, which are fixed on plates (3, 4) of the stator, width Bc of the end of the U-shaped core (6) makes a half of the width B of the permanent magnet (2) of the rotor, besides, ends of the U-shaped cores (6) of one plate (3) face the ends of the U-shaped cores (6) of the other plate (4) and are displaced relative to them by the distance equal to the half of the width of the permanent magnet (2) of the rotor, besides, the permanent magnets (2) of the rotor are arranged between opposite ends of U-shaped cores (6) of the stator.

EFFECT: reduced magnet resistance in a magnetic circuit, increased intensity of magnetic field, electromotive force induced in stator windings, and a coefficient of generator efficiency.

4 dwg

FIELD: electricity.

SUBSTANCE: stator for electrodynamic machines comprises a coil, providing for the possibility to generate ampere-turns ("AT") of a magnetic flow. A coil comprises a foil conductor, comprising a section of foil conductor displacement, configured as capable of displacing sections of the foil conductor and an element of an excitation pole having multiple zones. Sections of the foil conductor are arranged on the element of the excitation pole, which comprises the first and second zones. The first section of the foil conductor is arranged on the first zone, and the second one - on the second zone. A section of foil conductor displacement connects the first section of the foil conductor with the second section of the foil conductor. A version of a foil coil is proposed, with an excitation pole having a surface to oppositely install conical magnets, for instance.

EFFECT: optimised generation of a magnetic flow and improved technology of stator coils making.

23 cl, 20 dwg

FIELD: electricity.

SUBSTANCE: invention is related to electric engineering, in particular, to electric DC machines. The proposed stabilised axial DC generator comprises a body, a pilot exciter, an exciter and the main generator, in which an inner magnetic conductor, a side magnetic conductor with one active end surface and a side magnetic conductor with two active end surfaces are arranged as axial. At the same time, according to this invention, into slots of the side axial magnetic conductor with two active end surfaces at the side of the inner axial magnetic conductor there is an additional winding of excitation exciter, and in the lower part of the generator body there is a voltage controller comprising a metre of voltage deviations, a preliminary amplifier, a unit of power amplification and a power part. The metre of voltage deviations is connected to the output voltage of the generator, and the additional winding of the excitation exciter is connected to a power part of the voltage controller.

EFFECT: expanded area of application of a generator due to stabilisation of output voltage.

2 dwg

Electromagnet motor // 2470442

FIELD: electricity.

SUBSTANCE: invention is referred to electric engineering and power engineering, in particular, to electromagnetic motors. The electromagnetic motor comprises a rotor arranged in the form of a shaft installed as capable of rotation of at least two discs installed on the shaft, with permanent magnets arranged along their periphery, a stator comprising electromagnets installed as capable of interaction with permanent magnets, besides, the permanent magnets are arranged in the form of cylinders, planes of ends of which are located in the radial plane of each disc, besides, permanent magnets of the first and second discs face each other with poles, and the stator comprises electromagnets in the form of solenoids without magnetic conductors installed between discs of the rotor, two start-up electromagnets, comprising non-linked magnetic conductors and installed oppositely to a permanent magnet, of any of rotor discs, a contactless induction switch installed on the stator opposite to any of permanent magnets of rotor discs with the possibility of interaction with each of permanent magnets arranged on one of rotary discs of the rotor, at the moment of permanent magnet passing through a zone of sensitivity of a sensor part of the contactless induction switch.

EFFECT: increased capacity of a motor.

8 dwg

FIELD: electrical engineering; mechanical design of commutatorless magnetoelectric machines.

SUBSTANCE: rotor magnetic system has more than two magnetically permeable steel laminations with pole horns formed by prismatic tangentially magnetized N-S permanent magnets placed inside laminated stack; inner and outer diameters of laminations are uninterrupted and rectangular prismatic magnets are installed inside them so that distance over outer arc between external planes of two adjacent magnets of unlike-polarity poles is shorter than that over internal arc between same planes; magnets do not contact one another and have at least one projection on inner diameter for coupling with rotor shaft.

EFFECT: enhanced manufacturability.

3 cl, 2 dwg

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