Machine with transverse magnetic flux (versions)

FIELD: electricity.

SUBSTANCE: electric machine with transverse magnetic flux includes at least three phases, each of which is formed with core stator and windings. All the above phases are arranged in common housing. Parallel connected electric lines are branched from the above phases. There is also current converter from current source, which is formed with inductors connected in each of the above electric lines, switching circuit and switching capacitors. All the above components are placed in common housing. Two versions of the present invention are proposed.

EFFECT: simplifying layout of electric machine with transverse magnetic flux.

15 cl, 13 dwg

 

The technical field

The invention relates to an electrical machine with transverse magnetic flux, which can function as a motor or generator, and in the case in which the compact layout of the integrated solid-state inverter current.

The level of technology

Known electric machine with transverse magnetic flux, which, essentially, are multi-pole electric machine. The stator of such a machine has a single cylindrical winding for each phase and protruding ferromagnetic pole pieces. The rotor consists of permanent magnets. In the machine with transverse magnetic flux vector of the electromagnetic forces acting between the rotor and stator, perpendicular to the plane of the magnetic flux. In standard machines that use magnetic flux vector of the electromagnetic forces parallel to the plane of the magnetic flux. As is known, the electric machine with transverse magnetic flux has a number of advantages compared with standard machines.

Electric machine with transverse magnetic flux is usually supplied with a voltage inverter, which contains a large capacitor. The arrangement of the machine with such a voltage inverter may cause difficulty.

Disclosure of inventions

According to the invention the machine with transverse m is gnanam stream contains, at least three phases, each of which is formed by the stator core and the respective windings. All these phases are housed in a common housing. From each phase depart parallel to the electric lines. There is a current transducer placed in the same enclosure as the other components of the machine.

These and other features of the invention will become clear from the following detailed description and the accompanying drawings.

Brief description of drawings

Figure 1 shows the electrical diagram of the first variant of the invention.

Figure 2 shows the electric circuit of the power module.

Figure 3 diagram of figure 1 shows a breakdown of the power modules 2.

Figure 4 module 2 is shown in cross section.

Figure 5 illustrates one of the phases of the electric machine.

Figure 6 shows the three phases of this machine.

Figa illustrates the constructive execution of one of the phases.

On FIGU presents a different view option on figa.

On figs option figa shown in axial section.

On Fig presents electric machine Assembly.

Figure 9 shows the electrical circuit of the second option.

Figure 10 shows the electrical circuit of the power module for the variant in figure 9.

Figure 11 diagram in figure 9 presents a breakdown of the power modules figure 10.

The implementation of the invention

Nafig is a diagram of the actuator 20 with transverse magnetic flux electrical machine 24 with transverse magnetic flux. The source 22 of direct current (DC source) is connected to the electrically parallel lines 23, each of which included the inductor 26. The inductors 26, switching diagram containing solid keys 28 and the diode 29, and the commutating capacitor 32 together form a Converter of the current supplied from the current source 22. Switching diagram containing solid keys 28 and the diode 29, and the United star capacitor 32 form a power module. Solid keys 28 may be transistors.

Figure 2 shows a variant of a single power module 40, which may serve as a path of the actuator 20 with transverse magnetic flux. Winding 34 of the motor included in the output module 40, result in rotation of the rotor 46 (conventionally shown in figure 1).

Figure 3 presents the scheme of the actuator 20 with transverse magnetic flux, showing that the drive used 6 modules of figure 2, with three modules (denoted as 41) form a lower arm, while the modules 40 form an upper shoulder.

The modules 40, 41 allows convenient layout, as it will be explained next. Figure 4 shows that each of the modules 40 (or 41) may have a housing 42 made of plastic, completing 44 of silicone gel or thermoplastic insulating resin and jumpers 146 connecting each key 28 with adim diode 29. The key 28 may be transistor based on silicon carbide, for example, bipolar, field, or managed pn-junction. The diode 29 may be a Schottky diode based on silicon carbide. The module 40 may also contain a base 200 of material AlSiC (aluminum/silicon carbide), the insulating substrate 202 from aluminum nitride (AlN) and pad 204 of AlSiC. Obviously, this option modules 40 or 41 is provided only as an example: other options may contain any number of other components and materials. From each module displayed output lines 45; their connection is illustrated in figure 3.

Figure 5 illustrates the integration in the electric machine 24 with transverse magnetic flux, single phase power modules 40 and 41. This electric machine can be driven in rotation by means of the actuator 20 with transverse magnetic flux in figures 1 and 3. It is seen that the modules 40 and 41 mounted between two pole pieces 50 of the stator are offset circumferentially with respect to these tips. Stator winding 52 is made as a cylindrical winding located between all of the pole pieces 50 in the structure of the stator core.

It is seen that the inductor 26 is located in the plane of figure 5. The rotor 46 includes multiple permanent magnets 48.

As shown in Fig.6, this way you can skobin is its three phase 60, 61 and 62. While the inductors 26 is installed between phases 60, 61 and 62. The inductor 26 is fixed in the housing by means of a spacer 64 in the form of a ring. This arrangement allows not only to place all power modules 40 and 41 without increasing the size of the body and to use a relatively large inductors 26.

On figa shows a single phase 60 in the embodiment, when the pole tip 50 of the stator is surrounded by a disk 70 from non-ferromagnetic material. This disk serves to hold together the stator cores and windings 52. The dashed line shows the contour 72 of the housing. From FIGU shows that the modules 40 and 41 will be in the same case. On figs shows the position of the stator winding 52, which is made in the form of a ring.

On Fig presents electric machine Assembly. It is seen that the casing is in the form of a sleeve 80 (for example, having a cylindrical shape) surrounded by three phase 60, 61 and 62, fastened between the inductors 26 and strip 64. The housing also has two end plates 82, to keep all the components inside the enclosure formed by the sleeve 80 and the end plates 82. Although the not shown power modules 40 and 41, it should be clear that they are performed in the manner described above and, therefore, must intersect the plane of the drawing.

Described electric machine can operate as nm the engine. However, in a similar way, you can make and the electric machine capable of operating as generators. Do you want to change the connection of the keys 28 and diode 29 in power modules 40, 41 as shown in Fig.9. The rotor 115 is driven by the main drive, it will spin in the immediate vicinity of the generator windings 114. These windings 114 generates a current flowing to the load 102. Uses the same housing 104, the inductors 106, the keys 110 and the diode 108 and the capacitor 112, as in the previous version.

Figure 10 shows a single power module 116, modified by changing the enable key 110 and diode 108 in comparison with the previous variant of figure 2. Accordingly, figure 11 shows the circuit 100 containing power modules 116, is also slightly different from the version in figure 3. As the circuit in figure 3, the circuit 100 11 contains three modules (indicated as 118), forming a lower shoulder, and three module 116, forming the upper shoulder. However, with respect to the layout of power modules 116 and 118 and the inductors 106 can be placed exactly as in the previous version.

The person skilled in the art will understand how to interconnect the components shown in figure 5, 6 and 8 when they are placed in a common housing. For proper connection of the components 5, 6 and 8 is enough to use the with schema shown in figures 1, 3, 9 or 11.

The person skilled in the art will also understand that in the described variants of the invention can be made of various modifications, not beyond that defined by the attached claims.

1. Electric machine with transverse magnetic flux that contains:
at least three phases, each of which is formed by a stator core and windings, all of these phases are housed in a common housing;
included in parallel electrical lines extending from these phases,
and the Converter current supplied from the current source formed by the inductors included in each of these electric lines, circuit switching, and switching capacitors, and these inductors are placed in the specified General case.

2. Machine according to claim 1, characterized in that the inductors are physically located between at least two of these three phases.

3. Machine according to claim 2, wherein one of the inductors placed between the first and second of these phases, and the other inductor between the second and third of these phases.

4. Machine according to claim 3, wherein the inductors are arranged mutually in parallel, and these, at least three phases are relative to the inductor on one side of these electric lines.

5. The machine is about to claim 1, characterized in that the specified overall body additionally mounted power modules, containing at least a key and a diode.

6. Machine according to claim 5, characterized in that the said power modules are grouped in the upper shoulder and lower shoulder.

7. Machine according to claim 6, characterized in that the power modules are installed between the two pole pieces of the stator are offset circumferentially relative to the aforementioned tips.

8. Machine according to claim 7, characterized in that the upper and lower arms of the power module are located on opposite sides of the pole tip.

9. Machine according to claim 5, wherein the power module further comprises a capacitor.

10. Machine according to claim 9, characterized in that the power module is designed to provide the opportunity for an electrical machine with transverse magnetic flux to function as a motor.

11. Machine according to claim 9, characterized in that the power module is designed to provide the opportunity for an electrical machine with transverse magnetic flux to operate as a generator.

12. Electric machine with transverse magnetic flux that contains:
a housing formed of a cylindrical sleeve located between the two end plates;
electrical circuits forming at least three phases and are mounted in the same enclosure, is rich in each phase has a stator core and a winding;
included in parallel electrical lines extending from these phases, and
the Converter current supplied from the current source formed by the inductors included in each of these electric lines, circuit switching, and switching capacitors, and these inductors are placed in the specified case.

13. Machine according to item 12, wherein one of the inductors placed between the first and second of these phases, and the other inductor between the second and third of these phases.

14. Machine 12, characterized in that the specified case additionally mounted power modules, containing the switches and diodes.

15. Machine 14, wherein the power module further comprises a capacitor.



 

Same patents:

FIELD: electricity.

SUBSTANCE: method is realised using facilities for observation of certain ratios of angular dimensions of poles of the motor rotor and its stator, even poles of which are equipped with one concentrated winding, and odd ones - with two concentrated windings, which are connected in a certain manner. Besides, in the proposed motor full currents of phase windings comprise in their composition only the first harmonic component and do not comprise higher harmonic components, and motor power supply is realised with three sinusoidal currents with the help of a three-phase bridge inverter, which is controlled by the relay-current method.

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EFFECT: improvement of start-up properties of permanent magnet motor owing to reducing pulsations of reactive moment; providing reliable connection of modules and permanent magnet motor as a whole.

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FIELD: electricity.

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2 dwg

FIELD: electricity.

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FIELD: electricity.

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EFFECT: technical result achieved by this invention consists in increased power and dynamic characteristics of inverted valve motors (IVM).

2 cl, 6 dwg

FIELD: electricity.

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3 dwg

FIELD: electricity.

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FIELD: electricity.

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2 cl, 2 dwg

FIELD: electric engineering.

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4 cl, 3 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: invention refers to the design of non-contact synchronous electric machines with axial excitation and can be used in wide range of frequencies of machine shaft rotation (from units of revolutions per minute to several tens of thousands of revolutions per minute) in automation systems, independent electric equipment systems, in military, space engineering, on aviation and automobile transport, as traction controlled and non-controlled electric actuators, wind-driven generators, multiphase synchronous motors, multi-phase high-frequency synchronous AC electric generators and multiphase generators of frequency converters (including three-phase systems), as well as at rectification of output variable voltage and current of generators by means of semiconductor rectifying devices and with possibility of using smoothing filters to reduce fluctuations of output parameters - as DC (rectified current) power supply sources. Stator of the proposed magnetoelectric non-contact machine with axial excitation contains odd and even armature cores. Each core of armature has laminated pack consisting of insulated electrotechnical steel plates with high permeability with salient poles of armature. Cores of armature, the number of which is at least two, are fixed in non-magnetic housing. On salient poles of armature there located is coil multi-phase winding of armature, each coil of which envelopes one of salient poles of armature of each armature core, which are located opposite each other in axial direction. Ring-shaped layers of segmental constant magnets are located between armature cores. In ring-shaped layers the constant magnets adjoin odd armature cores in axial direction by means of one magnetic polarity, and they adjoin even cores with the other magnetic polarity. Number of ring-shaped layers of segmental constant magnets is one less than the number of armature cores. Rotor without winding includes non-magnetic shaft with soft magnetic bushing put on it, on which there coaxially located are odd and even rotor magnetic conductors with pole projections, which are represented with laminated packs and consist of insulated electrotechnical steel plates with high magnetic permeability. Number of magnetic conductors of rotor is equal to number of armature cores. Odd and even rotor magnetic conductors are located relative to the appropriate odd and even armature cores and have the same active length in axial direction. Even rotor magnetic conductors are offset relative to odd magnetic conductors in tangential direction through the half of pole pitch of rotor magnetic conductor. At that, certain ratios are fulfilled between the number of salient armature poles, number of phases of multi-phase coil winding of armature, number of salient poles of armature in phase and number of pole projections of each magnetic conductor of the rotor.

EFFECT: obtaining reliable and highly repairable design, appropriate to the material, of multi-phase non-contact magnetoelectric machine with axial excitation with high energy properties and operating characteristics at wide range of shaft rotation frequencies and with various ratio of active length and bore diameter of machine stator.

16 cl, 4 dwg

Electric motor // 2490772

FIELD: electricity.

SUBSTANCE: electric motor contains a rotor with pole permanent magnets magnetised radially and number of poles more than two and a stator consisting of a magnet core in the form of a hollow cylinder and a symmetrical three-phase biplane single-layer winding at inner surface with minimum gaps required for stator assembly between lateral surfaces of working areas of the coils. Working areas of the coils are located along the electric motor axis; at that number of coils in a phase circuit is selected as equal to the number of pole permanent magnets of the rotor.

EFFECT: increasing specific electromagnetic torque of an electric motor by improvement of operating efficiency of its stator winding.

2 dwg

Electric machine // 2489788

FIELD: electricity.

SUBSTANCE: electric machine has a hermetically sealed housing, inside of which there is an interleaved stator core which rests on the housing of the electric machine by the external diameter. The stator core is provided with open grooves which accommodate spools. The spools of each stator groove are fixed by a wedge and a splined insert in contact with it, the cross-section of which can fix the back of the splined insert under the wedge of the groove. The surface of the back of the splined insert on its entire length is provided with a longitudinal channel which opens inside the housing of the electric machine, which is configured to feed compressed gas therein. The splined insert has radial holes, wherein the volumes of the splined inserts which protrude over the surface of the cavity of the stator core are merged into a tubular bushing, preferably composed of segments with formation of an inner surface of a cylindrical shape. Inside the housing, there are cylinder bushings, the cavity diameter of which is equal to the diameter of the tubular bushing. Between the ends of the stator core and the ends of the cylinder bushings facing them, there are stopper rings, the cavity of which is greater than the diameter of the cylindrical cavity of the stator core, provided with a shoulder which encircles part of the outer surface of the cylinder bushing. The stopper rings are made from nonmagnetic material and are fastened with the stator core. The cylinder bushings are mounted with possibility of radial displacement relative the longitudinal axis of the cylindrical cavity of the stator core, for which contacts of the bushings with the housing, an end shield and stopper rings are provided with seal rings, which can be elastically deformed radially and along the longitudinal axis of the stator core. The rotor has an inductor with a cylindrical outer surface, made from poles consisting of permanent magnets, nonmagnetic wedges and a shaft, the length of which exceeds that of the inductor. The ends of the inductor are rigidly fastened to end cylinder bushings made from nonmagnetic material, placed flush with the outer surface of the inductor, which is provided with a band, the outer surface of which has a cylindrical shape which corresponds on the diameter and roughness to the outer surface of the end cylinder bushings, wherein a gas bearing is formed by the gap between the inner cylindrical surfaces of segments of the splined inserts, cylinder bushings and the outer surface of end cylindrical inserts and the rotor band; furthermore, the axial bearing assembly of the electric machine has axial lobed gas bearings and a bearing disc.

EFFECT: reduced weight and size and longer service life of electric machines, including electric machines operating at high rotary speeds, while ensuring minimal rotor bowing, better cooling of the rotor and stator coil.

3 cl, 2 dwg

Generator // 2488211

FIELD: electrical engineering.

SUBSTANCE: in the suggested generator containing permanent magnets at rotor, fan and electronic module according to the invention in the area of radial surfaces of the stator end windings there is a centrifugal radial fan made in form of plates at the rotor, at that axes of magnets at the rotor are located at the angle towards the rotor axis and electronic module is located in space between the stator winding and rotor shaft.

EFFECT: increased reliability and reduction of generator dimensions.

1 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed permanent magnet motor consists of n equal modules, each of which includes a housing, a stator with phase windings, a rotor with constant magnets, which are magnetised in radial direction. Similar phase windings of adjacent modules are connected in series, housings and rotors of modules are connected to each other mechanically, and each module includes circular orientation elements of the stator with phase windings and rotors. At that, according to this invention, in each rotor, one half of magnets is offset relative to the other half in a circumfenertial direction by the half of the tooth division of stator tzs, and in adjacent modules, similar magnets of rotors are offset in a circumferential direction through value tzs/(2n).

EFFECT: improvement of start-up properties of permanent magnet motor owing to reducing pulsations of reactive moment; providing reliable connection of modules and permanent magnet motor as a whole.

2 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention refers to design of contactless magnetoelectric machines with electromagnetic reduction, and can be used in direct drives, in automation systems, in mechanisms with high moments on the shaft and low rotation frequencies of the shaft, as well as high-frequency electric generators and synchronous frequency converters. The proposed reduction magnetoelectric machine with pole gear-type inductor includes stator, the armature core of which is charged and has salient poles, on inner surface of which elementary teeth are made, coil m-phase armature winding, each coil of which is arranged on the corresponding salient pole of the armature, one on each pole, and rotor containing an inductor with toothed poles with equal number of elementary teeth on each pole, which are symmetrically distributed along cylindrical surface; constant magnets magnetised in tangential direction are located between toothed poles of the inductor. When performing certain relations between the number of salient poles of the armature, number of elementary teeth on salient pole of the armature, number of salient armature poles in the phase, total number of armature teeth, number of toothed poles of the inductor, total number of inductor teeth, number of elementary teeth on toothed pole of the inductor and number of phases of m-phase armature winding of reduction magnetoelectric machine with pole toothed inductor, the method is implemented.

EFFECT: providing high power and operating characteristics, high specific torque moment on the shaft and high electromagnetic reduction of rotation frequency in electric motor mode, as well as high specific power at high EMF frequencies in electric generator mode.

5 cl, 5 dwg

Electric motor // 2476977

FIELD: electricity.

SUBSTANCE: electric motor comprises a salient-pole stator with a control winding and a rotor with poles from permanent magnets arranged on ends and adjacent parts of side surfaces of a rotor magnetic conductor. Between adjacent magnets of the rotor pole arranged on the end and adjacent parts of side surfaces of the rotor magnetic conductor, additional magnets are introduced, polarity of which matches polarity of the rotor pole.

EFFECT: higher efficiency of operation of a magnetic system of an electric rotor and its specific torque and efficiency increase.

1 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.

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

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: invention describes direct rotation generator that includes holder of iron cores and rotating shaft arranged on holder of iron cores. The first and the second rotating discs are located on two corresponding ends of rotating shaft. The first iron core is located on holder of iron cores, and the first winding is located at the periphery of holder of iron cores. The first sealing plate is located on the first rotating disc; the first magnet is located on the first rotating disc or on the first sealing plate, and surface of the first magnet and surface of the first sealing plate share one surface. The fourth magnet is located on the second rotating disc. The first magnet and the fourth magnet correspond to two ends of the first iron core, and poles of the first and the fourth magnets, which face each other, are opposite. One end of the first iron core includes liquid tank that is filled with magnetic liquid; at that, end of the first iron core, which is filled with magnetic liquid, contacts the first sealing plate. The main magnetic flux of direct rotation generator and magnetic flux created with induced current are horizontal and parallel to iron core, which considerably reduces the impact of resistance on rotation of iron core and magnets.

EFFECT: saving of energy for generation of electric energy and increase in generator efficiency.

10 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: in the method to control a frequency-controlled induction electric drive with a short-circuited rotor there is a setter used arranged as a relay controller, from which a signal of optimum accuracy arrives to an input of frequency converter speed control. A tracking system comprises a frequency converter implementing vector control, an induction motor with a short-circuited rotor. The setter comprises a sensor of phase currents, a sensor of instantaneous speed signal value, a sensor of phase voltages, a converter of current phase number, a vector-analyser, a converter of voltage phase number, rotators of current and voltage, a unit of parametric coefficients, a unit of switching function coefficients, a unit of summators, a unit of multiplication, a summator, a unit of setting signals, a unit to produce a setting signal for rotor flux linkage and an appropriate coefficient of PI-controller, a unit to produce a setting signal for rotor flux linkage and an appropriate PI-controller coefficient, a relay with high switching frequency, a scaling unit, a multiplier, a selector and a switch connected as specified in application materials.

EFFECT: production of control of optimum accuracy over speed of shaft rotation in a frequency-controlled asynchronous electric drive with a short-circuited rotor.

2 cl, 1 dwg

FIELD: electricity.

SUBSTANCE: in a synchronous generator, comprising stator, front and rear covers, a rotor with beaked pole tips and an excitation coil, according to this invention, the rotor is additionally equipped with a star-like non-magnetic link with a central hole. The latter is installed in the middle of the coil in the plane of its rotation, and link teeth are arranged between beaked tips. Using this invention makes it possible to efficiently use ventilation action of pole tips, at the same time each of tip sets cools the appropriate front part of the stator. At the same time, if separate fans are used, the number of vanes in their blades may be excluded or anyway reduced, and the vane width may be decreased. These effects are achieved by using a technologically simple part of a star-like non-magnetic link, which may be made, for instance, by means of casting from plastic.

EFFECT: improved operational characteristics due to reduced consumed power spent for ventilation and improvement of thermal characteristics.

2 dwg

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