Electric motor

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

 

The invention relates to the field of electrical engineering, in particular to electromagnetic actuators actuators, and can be used to rotate the actuator at a given angle from fixation in the extreme positions.

Known as the "Motor" (Russia, patent No. 2252476 C2, H02K 21/00, NN 36/00, publ. 20.05.2005, bull. No. 14)containing salient-pole stator, at least one control winding and the rotor poles of the permanent magnets located at the ends and adjacent parts of the side surfaces of the magnetic rotor.

The disadvantage of this device is that given magnetizing force of the coil and the electromagnetic torque in minimum dimensions of the motor, the maximum transverse dimension of the rotor is restricted from below by the achievement of the magnitude of induction in the material of the magnetic rotor values of saturation magnetic flux density when passing through the magnetic circuit of the rotor is required to create the specified electromagnetic torque of the rotor flux from the magnetizing force of the permanent magnets. The specified device is selected as a prototype.

The problem to which the invention is directed, is to create a motor with the highest possible specific electromagnetic torque.

Technical result achieved in the implementation of the relocation of the invention, is to increase the efficiency of the magnetic system of the motor and, consequently, increase its specific torque and speed.

This is achieved in that in the motor containing salient-pole stator, at least one control winding and the rotor poles of the permanent magnets located at the ends and adjacent parts of the side surfaces of the magnetic rotor, new is the fact that between adjacent magnets of the rotor poles arranged on the end face and the adjacent parts of the side surfaces of the magnetic rotor, the additional magnets, the polarity of which coincides with the polarity of the rotor poles.

Introduction between adjacent magnets of the rotor poles arranged on the end face and the adjacent parts of the side surfaces of the magnetic rotor, additional magnets, the polarity of which coincides with the polarity of the poles of the rotor, allows at the same prototype flow and the dimensions of the rotor, the magnitude of induction in the material of the magnetic rotor values of saturation magnetic flux density, to increase the magnetic flux of the rotor poles arranged along the direction of the vector sum of flows poles of the rotor from the front and side magnets, which leads given magnetizing force of the coil and the size of the device led to the structure of the electromagnetic torque and the efficiency of the magnetic system of the motor. This implies that you can create a motor with specified electromagnetic torque and magnetizing winding force with less in comparison with the prototype of the rotor flux and, consequently, a smaller maximum transversal dimension of the rotor, and hence the dimensions of the whole structure, i.e. with the highest possible specific electromagnetic torque. The decrease of the maximum lateral dimension of the rotor reduces its inertia, and thus increases the speed of the motor.

The figure depicts the inventive motor in its original state.

The motor contains a salient-pole stator and the rotor.

Salient-pole stator includes a magnetic core 1 and the winding control 2.

The rotor has a magnetic core 3 and the pole, each of which is formed by the permanent magnets 4 and 5. The magnets 4 are located at the ends and adjacent parts of the side surfaces of the magnetic core 3. The magnets 5 are located between adjacent magnets 4 rotor poles, placed at the ends and adjacent parts of the side surfaces of the magnetic core 3.

The electric motor operates as follows. In the absence of voltage on the control winding 2 rotor poles of the permanent magnets 4 and 5, being attracted to the poles of the magnetic circuit 1, keep the rotor from the latch (figure not shown) at a certain angle φ from the axis of Symm the tree of stator poles. When submitting to the control coil 2 voltage of a certain magnitude and direction of magnetization coil 2 generates a flow of the stator, which, interacting with the rotor flux, creates traction torque tends to turn the rotor to the opposite poles of the stator.

Studies on three-dimensional finite element model showed that at a constant magnetizing force of the stator winding within the specified dimensions of the specific motor electromagnetic torque at all operating angle of rotation of the rotor increases to ≈2 times in comparison with the prototype.

The motor containing salient-pole stator, at least one control winding and the rotor poles of the permanent magnets located at the ends and adjacent parts of the side surfaces of the magnetic circuit of the rotor, characterized in that between adjacent magnets of the rotor poles arranged on the end face and the adjacent parts of the side surfaces of the magnetic rotor, the additional magnets, the polarity of which coincides with the polarity of the poles of the rotor.



 

Same patents:

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

Electric motor // 2454774

FIELD: electricity.

SUBSTANCE: electric motor (1) consists of the first structure (4) that includes some magnetic poles formed by a certain sum of magnetic poles (4a) organised in certain direction and arranged in such a way that every two neighbouring magnetic poles (4a) have polarity that differ from one another, the second structure (3) that includes some armatures located opposite to the said magnetic poles for generating movable magnetic fields moving in certain direction between the row of armature and row of magnetic poles under the influence of certain sum of armature magnetic poles generated in the armatures (3c - 3e) at electric power supply to them, and the third structure (5) that includes a row of elements from magnetic-soft material formed by certain sum of elements (5a) from magnetic-soft material organised in certain direction with a one gap in relation to the other and arranged in such a way that a row of elements from magnetic-soft material is located between a row of magnetic poles and a row of armatures, number of magnetic poles (4a) and number of elements (5a) from magnetic-soft material is determined by the ratio 1 : m : (1 + m)/2 (m ≠ 1.0).

EFFECT: decrease of dimensions and manufacturing cost of the said electric motor with simultaneous provision of possibility to increase freedom degree at its designing.

6 cl, 19 dwg

FIELD: electricity.

SUBSTANCE: axial two-input contactless dynamo includes body, permanent multipolar magnet of induction coil subexciter, lateral axial magnetic conductor with polyphase armature winding of subexciter, single-phase winding of subexcitor and auxiliary excitation winding of exciter which is connected to DC power supply source through contacts, inner axial magnetic conductor with polyphase armature winding of exciter and single-phase excitation winding of main generator, lateral axial magnetic conductor with polyphase armature winding of main generator, shaft fixed in bearing assemblies and rigidly bound with permanent multipolar magnet of induction coil subexciter and inner axial magnetic conductor by means of respective discs. Single-phase excitation winding of exciter is connected to polyphase armature winding of subexciter through polyphase double-wave rectifier. Single-phase excitation winding of main generator is connected to polyphase armature winding of exciter through polyphase double-wave rectifier.

EFFECT: possibility of adding and conversion of mechanical power and DC electrical power into AC polyphase electrical power, simplification of magnet system manufacturing technology, quality improvement of generated voltage.

1 dwg

FIELD: electricity.

SUBSTANCE: electric machine rotor comprises a hollow shaft of non-magnetic material and a cylinder placed on it made of magnetic-soft material with high magnetic permeability, in longitudinal radial slots of which there are permanent magnets fixed with non-magnet metal wedges, the outer surface of which complies with curvature of the outer surface of the cylinder, at the same time, according to this invention the cylinder is rigidly fixed to the hollow shaft and non-magnet metal wedges along the entire area of their contacts, and rotor ends are rigidly fixed with cylindrical bushings made of non-magnetic material, coaxial and rigidly fixed with the hollow shaft, besides, cylindrical bushings are equipped with through bores aligned in parallel to the longitudinal axis of the cylinder, at the same time the through bores match longitudinal radial slots of the cylinder in quantity and location and exceed their dimensions by the value sufficient for free passage of permanent magnets through them, besides, the permanent magnets are equipped with facilities of their fixation in longitudinal radial slots of the cylindrical bushings, besides, the external surface of the cylinder is equipped with a bandage made by winding of a flexible thread from high-strength non-magnetic material, for instance, a carbon fibre, at the same time the external surface of the bandage is of cylindrical shape that complies in diameter and roughness to the specified cylindrical bushings. Threads in the bandage are fixed by impregnation with hardening synthetic resins. Facilities for fixation of permanent magnets in longitudinal radial slots of the cylinder are made of parts from non-magnetic material that follow the cross section of through bores in the cylindrical bushings and are tightly installed in the through bores, in contact with the ends of the permanent magnets. Besides, the free end of at least one cylindrical bushing is closed with a screwed-in or a pressed cover. Besides, to fix the rigidly connected parts of the rotor, vacuum-diffusion welding is used.

EFFECT: considerable improvement of the electric machine rotor mechanical strength, increased resource during its operation at increased and high frequencies of rotation due to arrangement of the gas bearing between the bushing placed in the stator and fixed in the end shields, and the rotor, which provides for the possibility to reject frictionless bearings, this electric machine rotor does not have sagging, since the rotor surface is used as the journal.

5 cl, 4 dwg

FIELD: electricity.

SUBSTANCE: electric machine rotor comprises a hollow shaft of non-magnetic material and a cylinder placed on it made of magnetic-soft material with high magnetic permeability, in longitudinal radial slots of which there are permanent magnets fixed with non-magnet metal wedges, the outer surface of which complies with curvature of the outer surface of the cylinder, at the same time, according to this invention the cylinder is rigidly fixed to the hollow shaft and non-magnet metal wedges along the entire area of their contacts, and rotor ends are rigidly fixed with cylindrical bushings made of non-magnetic material, coaxial and rigidly fixed with the hollow shaft, besides, cylindrical bushings are equipped with through bores aligned in parallel to the longitudinal axis of the cylinder, at the same time the through bores match longitudinal radial slots of the cylinder in quantity and location and exceed their dimensions by the value sufficient for free passage of permanent magnets through them, besides, the permanent magnets are equipped with facilities of their fixation in longitudinal radial slots of the cylindrical bushings.

EFFECT: considerable improvement of the electric machine rotor mechanical strength, increased resource during its operation at increased and high frequencies of rotation due to arrangement of the gas bearing between the bushing placed in the stator and fixed in the end shields, and the rotor, which provides for the possibility to reject frictionless bearings, this electric machine rotor does not have sagging, since the rotor surface is used as the journal.

4 cl, 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: 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

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

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

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: 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 a switch of immediate action comprising a body, at least one contact unit driven by a magnet unit, capable of displacement in a body, and a driving element with a source of control magnetomotive force, differing by the fact that it is equipped with two magnetic conductors fixed in the body and spaced in direction of driving element displacement, and the magnetic unit is also arranged as a source of control magnetomotive force, in the form of two permanent magnets, installed with identical poles onto a common pole tip, and additional pole tips adjacent to other poles of the specified magnets, besides, common pole tips of each magnet unit and source of the control magnetomotive force are placed between specified magnetic conductors as capable of displacement between them, besides, the magnetic unit and the source of control magnetomotive force are covered with shells, one of which movably interacts with a spring-loaded driving element, at the same time the contact unit interacts with the magnetic unit via a plate of electric insulation material.

EFFECT: higher accuracy of a switching diagram and device reliability.

3 cl, 4 dwg

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