Non-contact reduction magnetoelectric machine with axial excitation

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

 

The invention relates to the field of electrical engineering, in particular to low-speed, high-torque electric motors, drives and generators, concerns the design of a contactless magneto-electric machines with electromagnetic reduction with axial excitation from permanent magnets and can be used in automation systems, military equipment, space equipment, household appliances, as the motor-wheels, drum motors, starter-generators, Electrosila steering, hoisting equipment, electric mixers, belt conveyors, pumps for pumping fluids, mechanisms with high moments on the shaft and a low speed shaft, as direct drives without the use of mechanical gearboxes, as well as wind turbines, hydro generators, high-frequency electric generators, synchronous inverters and as managed hybrid stepper motors.

Known synchronous geared motor (Patent RU 2054220 C1, MPK H02K 37/00, H02K 19/06, authors: Shevchenko A.F.; Kaluga DL)containing a rotor with Zpteeth and the stator 4·p poles (p=1, 2, 3, ...), on the inner surface of which is made of elementary teeth Zsteeth on each pole, and Zr=4·p·(Zs+K)±p (where K=0, 1, 2, ... - a the f number), in large grooves between the poles of the stacked coil phase windings one on each pole, the coils are located on the same poles with numbers that differ by 4, are connected in series "the end" from "the beginning" and is formed by four branches, the "end" of the first branch formed 1, 5, ..., 1+4·(p-1) coils, connected with the beginning of the" third branch formed 3, 7, ..., 3+4·(p-1) coils, and the connection point of these branches is connected to the first the output winding end of the second branch formed 2, 6, ..., 2+4·(p-1) coils, connected with the beginning of the" fourth branch formed 4, 8, ..., 4+4·(p-1) coils and the connection point of these branches through sequentially switched capacitor also connected to the first output and the second output connected two diodes so that the anode of the first of them is connected to the first and fourth branches, and with the cathode of the second diode is a second and third branches. One drawback of the synchronous gear motor are low energy indicators. In addition, these technical devices often perform with small air gaps, which makes them difficult to manufacture in mass (mass) production.

Famous adopted for the prototype contactless torque motor (Patent RU 2285322 C1 IPC H02K 21/00, author Epifanov O.K.), containing soft magnetic annular slot stator with R the VNO pronounced toothed poles and concentrated m-phase armature winding, made in the form of coils, covering the poles of the stator, and the rotor is made in the form of two coaxially arranged annular gear soft magnetic magnetic rotor deployed relative to each other by half of their subcatego division, between which is placed an annular layer of axially magnetized in one direction of permanent magnets, with toothed poles of the stator and the toothed magnetic rotor facing each other and separated by an air gap δ, and the teeth on the magnetic rotor and the stator poles are made with a uniform and equal to each other subcommi divisions TZthe rotor is equipped with a non-magnetic sleeve thickness, more than half the thickness of the bMa layer of permanent magnets, which are installed and mounted stationary relative to each other toothed magnetic rotor are equal to each other active axial length Lpand an annular layer of permanent magnets, the number m of phases m-phase armature winding is made a multiple of three, defined as m=2f±1, where f is 1, 2, 3, ..., and expressed toothed pole grooving on the stator are evenly spaced, their number is defined as R=2m·2Swhere s is 0, 1, 2, ..., and each toothed pole stator is symmetrical about its axis placed an odd number of teeth, ZCthe thickness of the bZCwhen this axis subco the adjacent toothed stator poles are displaced relative to each other by an amount proportional to the ratio ±TZto m, and the adjacent poles of the stator are separated by a slot width bWnot less than ten times the size of the air gap, which is determined from the relation bW=TZ·[(1±1/m)-bZC/TZ], and the number of teeth ZRon each of the toothed magnetic rotor is made a multiple of 2nwhen n = 2, 3, 4, ..., defined as ZR=P·(ZC±1/m), the thickness of the teeth bZPeach of the toothed magnetic rotor is made equal to half his subcatego division TZand related to the thickness of gear teeth of the stator poles bZCthe ratio 2/3≤bZC/bZP≤1, and coil armature winding of one phase, separated from each other by the number of pole divisions of the stator is equal to the number m of phases, are connected in series according to active axial length LCthe annular groove of the stator with toothed poles determined by the relation LC=(2LP+bM), and an annular toothed magnetic rotor located relative to the annular groove of the stator axially symmetrically. The disadvantage of the prototype is the implementation of m phase m-phase armature winding only a multiple of three, the number of distinct toothed stator poles only even numbers of teeth on each of the toothed magnetic rotor only in multiples of 2nwhen n is equal to 2,3, 4, ..., the number of teeth on each pole of the stator, only odd, the thickness of the teeth bZPeach of the toothed magnetic rotor is only half of it subcatego division TZ. This reduces the possible design of this technical devices and the possibility of its use.

The aim of the present invention is the implementation of relatively simple, reliable, technologically advanced and vysokorentabelnoy with advanced design and advanced contactless magneto gear machine with axial excitation while maintaining a high energy performance and high specific torque on the shaft at high electromagnetic reduction of the speed mode of the electric motor and high-power density and high electromagnetic reduction of EMF frequency mode of the electric generator.

The present invention is the establishment of a connection between the number of poles of the armature, the number of phases is concentrated at the poles of the armature m-phase armature coil winding, the total number of teeth of the armature and the number of teeth of each core of the inductor, as well as the development of the algorithm for the construction of a wiring diagram m-phase armature coil winding touchless sensor therefore is ktoi gear magnetoelectric machine with axial excitation.

The technical result of the present invention to provide a high-tech designs contactless magneto gear machines with axial excitation with high electromagnetic reduction and advanced capabilities to their applications while maintaining a high energy performance and operational characteristics.

In order to achieve the objectives and the technical result of the invention, the stator consists of laminated armature core with salient poles on the inner surface of which is made of elementary teeth, reel m-phase armature winding with the use of frame coils, each coil which is placed on the corresponding expressed pole anchors, one on the pole, winding ferromagnetic rotor comprising an inductor with odd and even timing core with the same number of teeth on each core, the cores of the inductor can be made in the form of packets, recruited from the isolated electrical steel sheets with high magnetic permeability, the number of cores of the inductor at least two, the active length of the far inductor cores in the axial direction are the same, in the presence of inductor cores more than two, the active length of the cores in the axial direction between at the core of the inductor, twice as the active length of the far cores, even the cores of the inductor offset odd in the tangential direction by half of their subcatego division, the cores of the inductor is made in the form of laminated packages, pressed on the corresponding sleeve made of soft magnetic steel with high magnetic permeability, which is a magnetic coil and mounted on non-magnetic sleeve, the thickness of which in the radial direction is significantly greater than the magnitude of the air gap between stator and rotor, expressed toothed pole anchors and gear-core inductor facing each other and separated by an air gap between the magnetic inductor are annular layers axially magnetized in the same direction segmental permanent magnets, creating a unipolar permanent magnetic field of the excitation coil in the air gap, for machines with small diameter rotors may use one-piece ring-shaped permanent magnets, the number of ring layers segmental permanent magnets to one less than the number of cores of the inductor, Zubovo-slot area of the anchor is made of the "comb" distributed, the width of the crowns of teeth of each core of the inductor is determined by the equality bZ2=k·tZ2the width of the crown element of the situations of teeth, located on the salient poles of the armature is determined by the equality bZ1=k·tZ1while tZ1and tZ2are subzone dividing the salient poles of the armature and core of the inductor, respectively, the coefficient k=0,38÷0.5 and its value is selected depending on the shape of the AC power source when the machine is in operation mode of the electric motor and the shape of the variable EMF of the armature when the machine is in operation mode of the electric generator.

Contactless magneto gear machine with axial excitation can work in the mode of unmanaged and managed synchronous machine, controlled stepper motor and controlled DC motor with separate excitation.

When using contactless magneto gear machine with axial excitation as a synchronous electric motor powered armature winding can be performed:

- from a source of three-phase AC voltage,

- source single-phase AC voltage using a phase-shifting element,

from m-phase source of alternating voltage of constant frequency,

from m-phase source of alternating voltage adjustable frequency

from the constant voltage source through a control is offered with the inverter, feed a sinusoidal voltage on the phase winding of the armature, depending on the sensor of angular position of the rotor for maximum torque.

When using contactless magneto gear machine with axial excitation as a stepper motor powered armature winding can be performed from a power source that supplies the armature winding voltage pulses according to a predetermined algorithm in a specific point in time. At the same time to hold the rotor in position and can be applied to the mechanism of the phase of the electromagnetic arresting.

When using contactless magneto gear machine with axial excitation as a DC motor with separate excitation power winding of the armature is rectangular voltage pulses from the electronic switch according to a certain algorithm, depending on the sensor of angular position of the rotor for maximum torque. Thus the factor k is chosen equal to 0.5.

Contactless magneto gear machine with axial excitation can also be operated as a synchronous m-phase generator of sinusoidal EMF and as a synchronous m-phase generator variable EMF, Pramogu Inoi or keystone shape without a DC component.

In the present invention, the inductor is the rotor, and the armature - stator. The possible execution of a contactless magneto gear machine with axial excitation with an external anchor and the inner coil, the inner armature and the external inductor.

The invention is illustrated by drawings:

figure 1÷4 - examples of implementation of the invention in the form of transverse sections of the cores of the armature and the inductor, the circuit of the coils m-phase armature windings and vector diagrams of currents flowing through the windings of the armature,

5 is a General view of the contactless magneto gear machine with axial excitation with an external anchor and internal inductor with three inductor cores.

In accordance with the present invention between the number of salient poles of the armature Z1Pthe number of phases m-phase armature coil winding m=3, 4, 5, 6, ..., the total number of teeth of the armature Z1and the number of teeth of each core inductor Z2contactless magneto gear machine with axial excitation limits the communication necessary for the function of the machine and get the best energy performance at maximum specific torque on a shaft, which is expressed by the equalities(1), (2), (3):

where Z1m=1, 2, 3, 4, ... - the number of salient poles of the armature in-phase, Z1S=1, 2, 3, 4, ... - the number of teeth on the expressed pole anchors, K=0, 1, 2, 3, ... - nonnegative integer tZ1=360°/(Z1P·(Z1S+K)) and tZ2=360°/Z2defined in the angular dimension.

Coil m-phase armature winding in phase are connected opposite in magnetic relation. The beginning phase winding may belong to any coil in phase. The location of the phase coils on the poles of the armature along the bore of the stator is carried out in accordance with the alternation of the phase currents on the vector diagram. Phase armature winding can be connected in a star" or "polygon".

Figure 1÷4 presents examples of implementation of the invention in accordance with the formula(1), (2), (3) in the form of transverse sections of the armature core and the odd-numbered and even-numbered packages inductor contactless magneto gear machine with axial excitation, wiring coils m-phase windings of the armature when it is turned on sources of stress in motor mode and vector diagrams of currents flowing through the armature winding. According to the figures of drawings of transverse sections of the cores of the armature and the inductor and the shapes of the wiring of the coils m-phase armature windings is illustrated in table 1. The position of the cores of the inductor relative to serdechnaia on the figure in the motor mode, the position vectors of the currents on the vector diagram and directions of currents flowing through the coils of the armature winding, the corresponding figure is a wiring diagram of the coils m-phase armature winding contactless magneto gear machine with axial excitation is shown at the same time.

Table 1
According to the figures of drawings of transverse sections of the armature core, odd and even cores of the inductor and shapes of wiring diagrams coil m-phase windings of the armature
FiguremZ1mZ1PZ1SKZ1Z2
drawing cross
section
wiring diagrams coil winding
123394136 48
34428423250

Consider the design of a contactless magneto gear machine with axial excitation with an external anchor and internal inductor (figure 1, figure 3, figure 5). Paramagnetically with a high frequency of the armature core 1 is made of laminated package of isolated sheets of electrical steel with high magnetic permeability and is pressed into the magnetic core 2 made of magnetic steel with high magnetic permeability. On each expressed pole 13 and armature posted by elementary teeth 14. At the poles 13 concentrated reel m-phase winding 3 of the armature coil which is made of coiled copper wire or copper winding bus. In the manufacture of anchors with open grooves of the coil winding can be wound on the machines on elektroprovodyashchie frames and, then, together with the frames attached to the poles of the armature. The inductor by means of bearings 4, the shaft 5 and bearing shields 6 are positioned relative to the anchor. The shaft 5 is made of steel or titanium. If the shaft 5 magnetic, it fixed Nemani the Naya sleeve 16, the thickness in the radial direction is significantly greater than the air gap between the stator and the rotor. Non-magnetic sleeve 16 can be made of alloys of aluminum, copper, titanium, stainless steel. If the shaft 5 is made of non-magnetic, the sleeve 16 may not be installed. On the non-magnetic sleeve 16 mounted bushings 10, 11 and 12 made of magnetic steel with high magnetic permeability and which the magnetic circuit of the inductor, the sleeves 10 and 12 respectively pressed odd 7 and 9 cores of the inductor, the sleeve 11 is pressed even 8 core inductor. The active length of the two outer yokes 7 and 9 of the inductor in the same axial direction, the length in between the core 8 of the inductor to two times the length of the far cores 7 and 9. The cores 7, 8 and 9 of the inductor can be a laminated stack of isolated sheets of electrical steel with high magnetic permeability packages and have the same number on each packet evenly distributed around the circumference of the teeth 15. To reduce the cost of construction, the cores 7, 8 and 9 can be made by metal from solid blocks of steel with high magnetic permeability. In this case, the bushings 10, 11 and 12 are not installed. Even 8 core inductor offset odd-numbered 7 and 9 cores of the inductor in Tangen the territorial direction by half of their subcatego division. Between the magnetic cores 10, 11 and 12 of the inductor are annular layers axially magnetized in one direction segmental permanent magnets 17. For machines with small diameter rotors may use one-piece ring-shaped permanent magnets 17. The permanent magnets 17 are bonded to the cores 10, 11 and 12 of the coil in the axial direction and are arranged in such a way that they create a permanent magnetic field of the excitation coil was pushed through the working air gap unipolar. The number of ring layers segmental permanent magnets to one less than the number of cores of the inductor.

Contactless magneto gear machine with axial excitation works in motor and generator modes.

Consider motor mode (figure 1, figure 3, figure 5). The excitation of the inductor creates a circular layers segmental permanent magnets 17, magnetized in the axial direction. This produces a constant magnetic field of the inductor with a constant MDS inductor and a constant magnetic flux inductor, unipolar mud through the magnetic cores 10, 11, 12 of the inductor cores 7, 8 and 9 of the coil, the air gap between the armature and the armature, the armature core 1 and the magnetic core 2 anchors. The teeth 15 of the odd cores 7 and 9 are magnetized inductor and form p is Luca one magnetic polarity, for example, the South pole "S", and the teeth 15 of the even core 8 are magnetized inductor and form a pole of the other magnetic polarity, for example, the North pole "N". Phase m-phase winding 3 anchor serves an alternating voltage on the m-phase winding 3 anchors flows an alternating current creates an alternating rotating magnetic field of the armature. This forms a variable time MDS anchors and time-varying magnetic flux of the armature. Figure 2 and figure 4 shows vector diagrams of currents flowing through the respective m-phase windings 3 anchors, wiring diagrams which are presented on these drawings. The vectors of currents in time rotate the coordinate axes xy counterclockwise. Consider the point in time when the currents are projected on the y-axis. B according to these projections in figure 2 and figure 4 the directions of currents in the coils m-phase windings of the armature. This elementary teeth 14 made on the respective salient poles 13 anchors, which are the coil m-phase winding 3 anchors, form a South magnetic pole S and a North magnetic pole "N". Due to the interaction of the alternating magnetic field of the armature with a permanent magnetic field of the inductor to the rotor of the applied unidirectional during the entire operating time of the electric motor torque. According from what briteney for one period, changes in the magnetic field of the armature, the rotor moves one subzone division core inductor. Hence, when changing the power m-phase voltages, submitted to m-phase armature winding with frequency f (Hz), the rotor rotates at synchronous frequency n=60·f/Z2(rpm). This is a high electromagnetic reduction of frequency of rotation of the rotor, the direction of which in the drawings is shown by an arrow with the letter "n". It is easy to see that in this construction the rotor rotates according to the rotation direction of the magnetic field of the armature.

Consider the generating mode (figure 1, figure 3, figure 5). During rotation of the rotor by a third-party source-torque rotational speed n of the permanent magnetic flux inductor, created ring layers segmental permanent magnets 17, permeates the air gap and expressed pole 13 of the anchor side of the inductor, anchors, creating in distinct poles 13 of the armature of an alternating magnetic flux, leading to the coils of the m-phase winding 3 of the anchor variable in time, EDS. If the external circuit load circuit is closed, m-phase winding 3 anchors flows alternating electric current, the electric power is given to the consumer.

1. Contactless magneto gear machine with axial excitation, containing the stator with salient toothed poles of the armature and concentrated m-phase armature winding, made in the form to the carcasses, covering the poles of the stator, and a toothed rotor, made in the form of two coaxially arranged annular gear soft magnetic magnetic rotor deployed relative to each other by half of their subcatego division, between which is placed an annular layer of axially magnetized in one direction of permanent magnets, with toothed poles of the stator and the toothed magnetic rotor facing each other and separated by an air gap δ, the rotor is supplied with the non-magnetic sleeve, characterized in that the stator consists of laminated armature core with salient poles on the inner surface of which is made of elementary teeth Z1Steeth on each pole, and Z1S=1, 2, 3, 4, ..., the armature winding is m-phase coil winding, each coil which is placed on the corresponding expressed pole anchors, one on the pole, and m=3, 4, 5, 6, ..., winding ferromagnetic rotor comprises an inductor with odd and even timing core with the same number of teeth on each core, the number of cores of the inductor at least two, even the cores of the inductor offset odd in the tangential direction by half of their subcatego division between the magnetic inductor are annular layers axially magnetized in one direction the AI segmental permanent magnets, creating a unipolar permanent magnetic field of the excitation coil in the working air gap, the number of ring layers segmental permanent magnets to one less than the number of cores of the inductor, Zubovo-slot area of the anchor is made of the "comb" distributed, the width of the crowns of teeth of each core of the inductor is determined by the equality bZ2=k·tZ2width crowns elementary teeth located on the salient poles of the armature is determined by the equality bZ1=k·tZ1while tZ1and tZ2are subzone dividing the salient poles of the armature and core of the inductor, respectively, between the number of salient poles of the armature Z1Pthe number of phases m-phase armature coil winding m, the total number of teeth of the armature Z1and the number of teeth of each core inductor Z2establishes limits on the communication necessary for the function of the machine and get the best energy performance at maximum specific torque on a shaft, which is expressed by the equalities(1), (2), (3)



where Z1m=1, 2, 3, 4, ... - the number of salient poles of the armature in phase K=0, 1, 2, 3, ... - nonnegative integer tZ1=360°/(Z1P·(Z1S+K)) and tZ2=360°/Z2defined in coal is the first dimension, coil m-phase armature winding in phase are connected opposite in magnetic relation.

2. Contactless magneto gear machine with axial excitation according to claim 1, characterized in that the anchor is located outside the inductor inside.

3. Contactless magneto gear machine with axial excitation according to claim 1, characterized in that the inductor is located on the outside of the anchor inside.

4. Contactless magneto gear machine with axial excitation according to claim 1, characterized in that the phases of armature windings are connected in star.

5. Contactless magneto gear machine with axial excitation according to claim 1, characterized in that phase armature winding connected in a polygon".



 

Same patents:

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: electricity.

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

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

9 cl, 5 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: electrical machine of double rotation includes stator, rotors installed so that they can rotate, the first blades that are connected to the first rotor and are rotated with the first rotor in the first direction, the second blades that are connected to the second rotor and are rotated with the second rotor in the second direction, shafts of rotors, and bearings that allow rotation of shafts, load-carrying housing; the first blades and the second blades are arranged outside the housing; stator is made in the form of individual teeth with winding without yoke, and rotors are made in the form of concentric sleeves from material with high magnetic permeability, which are located on outer and inner side of stator; on sleeves there fixed are radially magnetised constant magnets; polarity of neighbouring constant magnets alternates; on each tooth there located is concentric winding insulated from housing; number of poles of the first rotor is equal to the number of periods of the first fundamental harmonic of magnetomotive force of stator winding; number of poles of the second rotor is equal to the number of periods of the second fundamental harmonic of magnetomotive force of stator winding; rotors are not attached to each other and directions of their rotation are opposite.

EFFECT: improving reliability of electric machine of double rotation at simultaneous exclusion of transmission to its stator of reactive moment and providing the possibility of using air flows with low linear speeds for operation of this machine in generator mode.

9 cl, 3 dwg

FIELD: electricity.

SUBSTANCE: device intended to retain at least one constant magnet creating magnetic flow on surface of rotor of electrical machine during cooling of the machine, which contains at least one slot sunken from surface and spreading from one end of the above surface, and at least one clamping shaped element inserted at least in one appropriate slot having the projection projecting beyond the surface to come into contact at least with one magnet; at that, at least one slot and at least one clamping shaped element have the shape providing the possibility of retaining at least one clamping shaped element at least in one corresponding slot for retention at least of one magnet brought into contact on surface of the device.

EFFECT: providing reliable clamping and fixation of constant magnets on surface of rotor of electrical machine at simultaneous provision of the device for its cooling.

20 cl, 12 dwg

FIELD: electricity.

SUBSTANCE: invention may be used in wide range of machine shaft rotation frequencies (from several rpm to several tens of thousands rpm) in automatics systems, in autonomous electric equipment systems, in military, space engineering, household equipment, on aviation and motor transport, as traction controlled and uncontrolled electric drives, submersible oil pumps, wind-powered generators, hydraulic generators, multi-phase synchronous electric motors, multiphase high-frequency synchronous electric AC generators and multi-phase generators of frequency converters (including three-phase systems), and also, in rectification of output AC voltage and current of generators with the help of semiconductor rectifying devices and with the possibility to use smoothening filters to reduce pulsations of output parameters, as sources of supply with direct (rectified) current, exciters of synchronous generators of mobile mini-power plants, subexciters of main exciters of synchronous generators at stationary power plants. A stator of the contactless magnetoelectric machine with axial excitation comprises a charged core of an anchor with salient poles pressed in a soft magnetic body, being a magnetic conductor of an inductor, a coil multi-phase winding of the anchor, coils of which are arranged on appropriate salient poles of the anchor, one at each pole. The winding-free rotor of the machine comprises a shaft with a non-magnetic bushing placed on it, thickness of which in radial direction is considerably higher than the value of the working air gap, on which there are odd and even inductor cores with pole ledges arranged in a coaxial manner. Number of inductor cores is at least two, even cores of the inductor are displaced relative to odd cores of the inductor in tangential direction by half of pole division of the inductor core. Between cores of the inductor there are circular layers of segment permanent magnets axially magnetized in one direction and arranged in layers so that a unipolar permanent magnetic flow of the inductor is developed. Number of circular layers of segment permanent magnets is by one less than the number of inductor cores. At the same time certain ratios are met between the number of salient anchor poles, number of phases of the multi-phase coil winding of the anchor, number of salient poles of the anchor in the phase and number of pole ledges of each core in the inductor.

EFFECT: production of highly reliable, manufacturable and highly repairable design of the multiphase contactless magnetoelectric machine with axial excitation with high power parameters and operational characteristics at wide range of shaft rotation frequencies and with various ratio of active length and diameter of the machine stator bore.

18 cl, 4 dwg

Borehole generator // 2426875

FIELD: electricity.

SUBSTANCE: generator includes protective housing, electric connector, at least one attachment assembly, rotor with hydraulic turbine, constant magnets and excitation windings. At that, rotor includes several discs with through radial slots in which constant magnets are installed. Poles of constant magnets are directed parallel to generator axis and alternate. Excitation windings are installed on both sides of each disc. Generator cavity is filled with lubricating fluid. On upper edge of rotor there is filling opening of lubricating fluid to the cavity of generator. Generator includes at least one pressure and temperature expansion compensator interconnected with generator cavity.

EFFECT: simplifying the design, improving reliability and power of generator at decrease of axial dimensions and weight of electric generator.

5 dwg

Borehole generator // 2426874

FIELD: electricity.

SUBSTANCE: borehole generator is equipped with protective housing, electric connector, at least one attachment fitting, rotor with hydraulic turbine, constant magnets, rotor of generator and excitation windings which are fixed inside protective housing. Magnetic coupling containing drive and driven half-couplings and magnetic permeable partition between them is installed between rotors. Discs having radial slots in which constant magnets are installed are fixed on generator rotor. Excitation windings are installed on both sides of discs. Tight magnetic permeable partition containing parts from magnetic permeable material is arranged between driven and drive half-couplings. At that, drive half-coupling is connected to rotor, and driven coupling is connected to generator rotor. Inner cavity of drive half-coupling is filled with lubricating fluid. On upper edge of rotor there is filling opening of lubricating fluid to the cavity of drive half-coupling. Generator includes at least one pressure and temperature expansion compensator interconnected with cavity of drive half-coupling.

EFFECT: simplifying the design, improving reliability and power of generator at decrease of diametrical dimensions and weight of electric generator.

3 dwg

FIELD: electricity.

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

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

9 cl, 5 dwg, 1 tbl

FIELD: electricity.

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

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

5 cl, 5 dwg

FIELD: electricity.

SUBSTANCE: invention can be used in automation systems as traction controlled and non-controlled electric drives, as wind generators, hydraulic generators, high-frequency electric generators, multi-phase synchronous electric motors and electric generators of frequency converters, as well as multi-phase power sources of electric current. The proposed non-contact modular synchronous magnetoelectric machine consists of modules - "elementary machines", and includes stator the armature core of which is charged and has salient poles with coil m-phase armature winding, each coil of which is arranged on the appropriate salient pole of armature, one per a pole, as well as rotor which contains inductor with salient poles with alternating polarity, which are symmetrically distributed along cylindrical surface and excited with constant magnets. At that, there are certain ratios between the number of salient armature poles, number of phases of m-phase armature winding, number of salient poles in armature module phase, number of modules and number of salient poles of inductor.

EFFECT: high energy data, high specific torque moment on the shaft in electric motor mode and high specific power in electric generator mode of non-contact modular synchronous magnetoelectric machine owing to better use of useful capacity of the machine.

7 cl, 5 dwg

FIELD: electricity.

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

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

9 cl, 5 dwg, 1 tbl

FIELD: electricity.

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

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

9 cl, 5 dwg, 1 tbl

FIELD: electricity.

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

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

5 cl, 5 dwg

FIELD: electricity.

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

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

5 dwg

FIELD: electricity.

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

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

12 cl, 14 dwg, 1 tbl

FIELD: electricity.

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

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

9 cl, 4 dwg

FIELD: electricity.

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

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

18 cl, 11 dwg, 1 tbl

FIELD: electricity.

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

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

12 cl, 15 dwg, 1 tbl

FIELD: electrical engineering; mechanical design of rotor systems for permanent-magnet commutatorless electrical machines.

SUBSTANCE: proposed rotor magnetic system has electric steel stampings and N-S radially saturated magnets in the form of rectangular parallelepipeds uniformly disposed within stack of rotor stampings over its circumference. Rotor magnetic system section is assembled of four stacks joined by bars whose length is not smaller than that of section; like-polarity magnets alternately disposed in tandem are offset in axial direction through one fourth of stator slot angular pitch. Rotor magnetic system manufacturing process includes fabrication of two types of stampings wherein key slot and fixation holes for assembling stacks in section are offset relative to magnet holes through angles equal to (1/8)(360/Z) and (3/8)(360/Z) of stator slot angular pitch, respectively, where Z is double product of phase number by pole pair number and slot number per rotor pole and stator slot. Stacks whose number should be a multiple of four are assembled by installing magnets in them and joined in sections so as to ensure relative displacement of magnets in stacks arranged in tandem by one fourth of stator slot angular pitch. Alternative manufacturing process for rotor magnetic system includes fabrication of three types of stampings wherein key slot and holes for assembling stacks in section are offset relative to holes for fixation of magnets through angles equal to (3/40)(360/Z), (9/40)(360/Z), and (15/40)(360/Z) of stator slot angular pitch, respectively. Then stacks whose number should be a multiple of six are assembled by installing magnets in them and joined in sections so that magnets are relatively offset in stacks arranged in tandem by one sixth of stator slot angular pitch.

EFFECT: enhanced performance characteristics of commutatorless magnetoelectric machines, facilitated rotor manufacture, enlarged functional capabilities of such machines.

10 cl, 6 dwg

FIELD: wind power engineering; wind electric generators.

SUBSTANCE: proposed stator of wind electric generator contains magnetic circuits, excitation system, bracing members and winding. According to invention, stator is made in form of two pairs of U-shaped magnetic circuits. Upper pair is pointed with bridges downwards. Excitation system is installed between adjacent points. Lower pair is pointed with bridges up-wards and is enclosed by coil located between adjacent posts.

EFFECT: reduced mass and overall dimensions of generator at minimization of its cost.

3 dwg

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 thousand 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 and high-frequency synchronous electric AC generators, 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 non-contact electric machine with axial excitation includes odd and even armature cores with salient poles of armature, which represent laminated packs from insulated electrotechnical steel plates with high magnetic permeability and fixed in soft magnetic housing; the number of armature cores - not less than two, on salient poles of armature there concentrated is coil multi-phase armature winding, each coil of which envelopes in axial direction one of salient poles of armature of each armature core; between armature cores there located are ring-shaped coils of inductor excitation winding, the axes of which coincide in axial direction with machine shaft axis, connected to each other in magnetic opposite ratio, of ring-shaped coils of inductor excitation winding is one less than the number of armature cores. Rotor without winding includes non-magnetic shaft with soft magnetic bushing 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; the number of rotor magnetic conductors is equal to the 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 design appropriate to the material of multi-phase non-contact electric 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.

18 cl, 5 dwg

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