Contactless reducer electromagnetic machine with multipack inductor

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

 

The invention relates to 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, and can be used in automation systems, as the motor-wheels, drum motors, starter-generators, Electrosila steering, direct drives in household appliances (grinder, elektroshokovykh, washing machines etc), electric mixers, lifting mechanisms, belt conveyors, pumps for pumping fluids, mechanisms with high moments on the shaft and a low speed shaft, as well as wind turbines, hydro generators, high-frequency electric generators and synchronous frequency converters.

Known brushless synchronous generator with permanent magnets (Patent RU 2303849 C1 IPC NC 21/18, NC 21/14, author) VV)containing at least one circular section, comprising a rotor with a circular magnetic core, where the same step fixed even number of permanent magnets forming two parallel rows of poles with longitudinally and transversely alternating polarity, the stator carrying an even number of u-shaped electromagnets located the x in pairs opposite each other, device for rectifying an electric current, where each of the electromagnets has two coils sequentially counter-winding direction, each of the coils of the electromagnets is located on one of the parallel rows of rotor poles and the number of poles in a row and n satisfy the following relations : n=10+4·k, where k is an integer taking values 0, 1, 2, 3, etc. the Lack of similar design is the complexity and low energy indicators, due to the irrational use of the useful volume of the machine.

Known magneto electric machine (Patent RU 2009599 C1 IPC 5 NC 19/06, NC 19/24, authors: Golovan CENTURIES; novokreshenov I.; Saharov GA)containing the magnet with the number of poles of Z0toothed stator with a multiphase coil winding, each coil which is placed at one end of the stator winding ferromagnetic toothed rotor and a Converter connected to the stator winding, the stator and the rotor is constructed with even and not equal to each other numbers of teeth, and each phase winding is made of p counter is enabled coils, placed with a shift on a double pole division 2·τ, where 2·τ=Z0/p, p - the number is even.

Known synchronous geared motor (Patent RU 2054220 C1 IPC 6 NC 37/00, NC 19/06, authors: Shevchenko A.F.; Kaluga DL)containing a rotor with Zsub> pteeth 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)±R (where K=0, 1, 2, ... is an integer), 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·(R-1) coils, connected with the beginning of the" third branch formed 3, 7, ..., 3+4·(R-1) coils, and the connection point of these branches is connected to the first output winding end of the second branch formed 2, 6, ..., 2+4·(R-1) coils, connected with the beginning of the" fourth branch formed 4, 8, ..., 4+4·(R-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.

The disadvantage of the described induction electrical machines and synchronous gear motor are low energy indicators. In addition, these technical devices often perform with small air gaps that rudnay their production in bulk (mass) production.

Known superconducting switched reluctance machine (Patent RU 2178942 C1 IPC 7 NC 55/00, NC 55/02, authors: Kovalev L.K., Ilyushin, C.V., Poltavets, VN, The Semenikhin B.C., Penkin V.T., Kovalev K.L., Eroshkina L.A., Larionov A., koneyev S.M.-A., Modestov K.A., Larionov S.A.)containing the stator laminated core, posted on his pole projections of the multi-phase coil winding, a cylindrical rotor comprising a laminated core with pole projections, comes with a second stator laminated core, pole protrusions which is a multiphase coil winding and the second rotor located on the same shaft with the first rotor on the shaft between the two rotors placed cylindrical insert made of high-temperature superconducting (HTSC) material with "frozen-in" magnetic stream representing the activities we, magnetized in the axial direction and providing a unipolar pole protrusions of the first and second rotors, stators mounted solenoid, covering the above-mentioned cylindrical insert "marajuana" in her magnetic flux, a stator connected by a cylindrical magnetic core, and multi-phase coil winding provided with a switch that provides a unipolar magnetization of the poles of each stator, raznopolyusnost poles of the first and second when atarov, the coincidence with the direction of the magnetic flux in the stator poles with the direction of the magnetic flux above the insert, as well as alternate turn on coil windings of each phase in sequence. The disadvantage of the technical device design is the complexity of the rotor, the two stators with a solenoid between them, each stator has its multi-phase armature winding, low maintainability in the breakdown of any of the windings due to the location of the windings (armature and excitation) only on the stator, small compared to the claimed invention, the specific (related to the mass of active materials), the torque on the shaft.

Famous adopted for the prototype, contactless torque motor (Patent RU 2285322 C1 IPC NC 21/00, author Epifanov O.K.), containing soft magnetic annular slot stator with R distinct 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 gear m is genitoplasty 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 bzcwhile the axis of teeth, adjacent teeth, the 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], a 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), PR is the thickness of the teeth b zpeach 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 = 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 TZwhen power to the m-phase armature winding is carried out only from a voltage source with the same number m of phases, that of the armature winding. This reduces the possible design of this technical devices and the possibilities 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 a multipackage inductor 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 optimal choice of number of poles of the armature, the total number of teeth of the armature and the number of teeth of the inductor when performing concentrated at the poles of the armature m-phase armature coil winding contactless magneto gear machine with a multipackage inducer.

The technical result of the present invention to provide a high performance contactless magneto gear machine with a multipackage inductor. To this end, the stator consists of laminated armature core with salient poles on the inner surface of which is made of elementary teeth, cut the muscle m-phase armature winding, each coil which is placed on the corresponding expressed pole of the armature winding ferromagnetic rotor comprises an inductor with odd and even timing core with the same number of teeth on each core, the cores of the inductor is 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 extreme length of the inductor cores in the axial direction are the same, if there are packages of more than two inductor, the length of the cores in the axial direction between the extreme inductor cores, twice the length of the far cores, even the cores of the inductor is displaced relative to the odd cores of the inductor in tangential direction at half subcatego division of the inductor, the inductor cores pressed on the corresponding sleeve made of soft magnetic steel with high magnetic permeability and which the magnetic circuit of the inductor, which are mounted to non-magnetic sleeve, the thickness of which in the radial direction is significantly greater than 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 core is mi inductor are annular layers axially magnetized in one direction segmental permanent magnets, for machines with small diameter rotors may use one-piece ring-shaped permanent magnets, the permanent magnets adjacent to the magnetic coil in the axial direction and are arranged in such a way that the bushings with odd cores adjoined the permanent magnet poles of one polarity, for example, the South "S", and sleeves with even-numbered cores adjoined the permanent magnet poles of the other polarity, for example, the Northern "N", the number of ring layers segmental permanent magnets to one less than the number of cores of the inductor, the width of the crowns of teeth cores of the inductor is determined by the expression bz2=k·tz2a width of crowns elementary teeth located on the salient poles of the armature, can be determined by the expression bz1=k·tz1and also, the expression of bz1=k·tz2while tz1and tz2are subzone dividing the salient poles of the armature and core of the inductor, respectively, k=0,38÷0.5 and is selected depending on the form of alternating current armature 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.

When using contactless magneto gear machine with a multipackage inductor as a synchronous electric is vegetale food armature winding is:

- 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 controlled inverter that supplies 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 a multipackage inductor as a DC motor powered armature winding 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.

Contactless magneto gear machine with a multipackage inductor can also be operated as a synchronous m-phase generator of sinusoidal EMF and as a synchronous m-phase generator variable EMF rectangular shape without a DC component.

In the present invention, the inductor is the rotor, and the armature - stator. Possible IV is of the contactless magneto gear machine with a multipackage inductor with an external anchor and internal inductor, with internal anchor and the external inductor.

The invention is illustrated by drawings:

figure 1 - General view of the contactless magneto gear machine with a multipackage inductor with an external anchor and internal inductor with three cores of the inductor,

figure 2 - General view of the contactless magneto gear machine with a multipackage inductor with an inner armature and an external inductor with four cores of the inductor,

figure 3÷15 - examples of implementation of the invention in the form of cross sections of the cores of the armature and the inductor, connecting circuits of the coils of the m-phase armature windings and the inclusion of the m-phase armature windings on the sources of voltages with different number of phases and charts currents (MDS).

In accordance with the present invention for obtaining the best energy performance when the maximum specific point on the shaft contactless magneto gear machine with a multipackage inducer of the number of salient poles of the armature Zlpthe number of elementary teeth on the expressed pole anchors Zls=1, 2, 3, 4 ..., the number of phases m-phase armature winding m=3, 4, 5, 6 ..., the number of salient poles of the armature in the phase of Zlm=1, 2, 3, 4 ..., the total number of teeth of the armature Z1the number of teeth on each core inductor Z2bound by the equalities(1), (2), (3):

Coil m-phase armature winding in the phase must be interconnected in this way (according to or counter)to the vectors of the induced EMF in them, geometrically combine to form a maximum total EMF phase armature contactless magneto gear machine with a multipackage inducer.

Figure 3÷15 presents examples of implementation of the invention in accordance with the formula(1), (2), (3) in cross sections of the armature core and odd and even cores of the inductor contactless magneto gear machine with a multipackage inductor, connecting circuits of the coils of the m-phase armature windings enabling m-phase armature windings in the motor mode to source voltages with different number of phases and charts currents (MDS). The line shapes of cross-sections of the armature core and odd and even cores of the inductor and connecting circuits of the coils of the m-phase armature windings is illustrated in table 1. The letter m in table 1 represents the number of phases m-phase armature winding contactless magneto gear machine with a multipackage inductor, and mEastthe number of phases voltage source. The position of the odd and even cores of the inductor relative to the armature core in the figure in motor mode corresponds to a point lying is neither, when showing the position vectors of the currents in the corresponding wiring diagram of the coils m-phase armature winding contactless magneto gear machine with a multipackage inducer (table 1).

4 shows the connection diagram of the coils of the 3-phase armature winding connection on 3-phase voltage source.

Figure 6 presents a diagram of the connections of the coils 4-phase armature winding connection 4-phase voltage source.

On Fig the circuit connections of the coils 5-phase armature winding connecting on 5-phase voltage source.

Figure 10 presents a diagram of the connections of the coils 6-phase armature winding connecting on 6-phase voltage source.

On Fig the circuit connections of the coils 4-phase armature winding with connection to a single phase alternating current of industrial frequency. The phase shift of the voltage source required for the function of the machine, is provided by the phase-shifting element, in this case, the capacitance C. thus wANis the number of turns of the coils of the armature winding, is connected directly to the phase "A" and zero, wCNis the number of turns of the coils of the armature winding, is connected to phase a and zero through the phase-shifting capacity C. the Ratio of the windings of phases of the armature is in the range kTr=wCN/ AN=1÷2.

Table 1

According to the figures of drawings of cross-sections of the armature core, odd and even cores of the inductor and shapes of the connecting circuits of the coils m-phase windings of the armature

FiguremZlmZlpZlsZlZ2mEast
drawing cross sectionschematic winding diagram of currents and (MDS)
343515345503
56428432304
785 315345485
9106212448506
11124312448451 with the phase-shifting capacity
13146318472753
-15932792432403

On Fig the circuit connections of the coils 6-phase armature winding connected at fasny the voltage source.

On Fig the circuit connections of the coils 9-phase armature winding connection on 3-phase voltage source.

Consider the design of a contactless magneto gear machine with a multipackage inductor with an external anchor and internal inductor (figure 1, 3, 5, 7, 9, 11, 13). Paramagnetically with a high frequency of the armature core 1 is made of laminated electrical steel with high magnetic permeability and is pressed into the magnetic circuit 2, which is the case made of steel with high magnetic permeability. On each expressed pole 13 and armature are made of elementary teeth 14. On the explicit poles 13 of the armature posted by reel m-phase winding 3 anchors. Coil m-phase winding 3 anchors are made of coiled copper wire or copper winding bus. 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 magnetic or non-magnetic steel or titanium. If the shaft 5 is magnetic, then it fixed non-magnetic sleeve 16, the thickness of which 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 steel or titanium, nemanita 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 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 are packages that are composed of isolated sheets of electrical steel with high magnetic permeability, and have the same number on each core 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 the tangential direction at half subcatego division tz2the inductor. 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 the purpose of the s 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 the sleeves 10 and 12 with the odd-numbered 7 and 9 cores of the inductor, respectively, the permanent magnets adjacent a South pole "S", and the sleeve 17 with an even 8 core inductor, respectively, the permanent magnets adjacent North poles "N", hence the odd teeth 7 and 9 cores of the inductor is magnetized as a South pole "S", and the teeth are even core 8 of the inductor is magnetized as a North pole "N>. The number of ring layers segmental permanent magnets at one less than the number of cores of the inductor. Created by the permanent magnets 17 of the magnetic flux closes unipolar through the cores and the magnetic coil, the air gap between the armature and the inductor and through the core and the magnetic anchor.

In the case of a design of a contactless magneto gear machine with a multipackage inductor with an inner armature and an external inductor (2) the role housing plays a non-magnetic sleeve 16.

Contactless magneto gear machine with a multipackage inductor operates in motor and generator modes.

Consider motor mode (1, 3, 5, 7, 9, 11, 13). The excitation of the inductor creates a circular segmental layers postenrichment 17. This produces a constant magnetic field of the inductor with a constant MDS inductor and a constant magnetic flux inductor, unipolar mud through the cores of the inductor 7, 8 and 9, the magnetic cores 10, 11, 12 of the inductor, 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 a pole of one polarity, for example, the South pole "S", and the teeth 15 of the even core 8 are magnetized inductor and form the poles of the other 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 magnetic field of the armature. This forms a variable time MDS anchors and time-varying magnetic flux of the armature. Figs.4, 6, Fig, figure 10, Fig, Fig presents vector diagrams of currents 18 power sources for the respective m-phase windings 3 of the anchor shown in these same figures. Symmetric m-phase voltage fed to the terminals m-phase windings 3 anchors, change over time, and the vectors of currents turn 18 in axes Hu counterclockwise. Consider the point in time when the currents are projected on the y-axis. Coil m-phase winding 3 anchors are named by the letter of the DVD is a possibility to the corresponding phase, and a numeral indicating the number of explicit pole 13 of the armature core 1. For example, the coil B2 - coil phase, located on the second expressed the pole 13 of the armature core 1. Figure 4, 6, 8, 10, 12, 14 the directions of currents in the coils of the m-phase armature winding in accordance with the projection vectors of the currents on the y axis. This elementary teeth 14 that are located on the respective salient poles 13 anchors, which are the coil m-phase winding 3 anchors, form a South pole S and a North 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, i.e. when changing the power m-phase voltages, submitted to m-phase armature winding with frequency ƒ (Hz), the rotor rotates at synchronous speed n=60·ƒ/Z2(rpm). The direction of rotation of the rotor on the figures shown by the arrow with the letter "n". At Z1<Z2the rotor rotates in accordance with the magnetic field of the armature, and when Z1>Z2the rotor is rotated against the rotation of the magnetic field of the armature.

Consider the generating mode (1, 3, 5, 7, figures 9, 11, Fig). During rotation of the rotor by a third-party source-torque rotational speed n of the permanent magnetic flux inductor, create the config annular 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.

Phase m-phase armature winding can be connected in star, and a polygon.

1. Contactless magneto gear machine with a multipackage inductor containing a stator with salient toothed poles and concentrated m-phase armature winding, made in the form of coils, 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, the internal surfaces of which are elementary teeth Z 1steeth 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, 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 cores of the inductor is 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 extreme length of the inductor cores in the axial direction are the same, even the cores of the inductor offset the odd cores of the inductor in the tangential direction at half subcatego division inducer tZ2width of the crowns of teeth cores of the inductor is determined by the expression bZ2=k·tZ2and the width of the crowns elementary teeth located on the salient poles of the armature is determined by the expression bZ1=k·tZ1while tZ1represents subzone division salient poles of the armature, and k=0,38÷0,5, between the magnetic inductor are annular layers axially magnetized in one direction segmental permanent magnets, the number of ring layers segmental permanent magnets on one is anise number of cores of the inductor, the number of salient poles of the armature is determined by the equality Z1p=m·Z1mwhere Z1m=1, 2, 3, 4 ... - the number of salient poles of the armature in phase, the total number of teeth of the armature is determined by the equality Z1=Z1p·Z1sthe number of teeth on each core of the inductor is determined by the equality Z2=Z1±Z1m.

2. Contactless magneto gear machine with a multipackage inductor according to claim 1, characterized in that the width of the crowns elementary teeth located on the salient poles of the armature is determined by the expression bZ1=k·tZ2.

3. Contactless magneto gear machine with a multipackage inductor according to claim 1 or 2, characterized in that in the presence of inductor cores more than two length of cores in the axial direction between the extreme inductor cores, twice the length of the far cores.

4. Contactless magneto gear machine with a multipackage inductor according to claim 1 or 2, characterized in that the anchor is located outside the inductor inside.

5. Contactless magneto gear machine with a multipackage inductor according to claim 1 or 2, characterized in that the inductor is located on the outside of the anchor inside.

6. Contactless magneto gear machine with a multipackage of inductor who according to claim 1 or 2, characterized in that when used as a synchronous motor powered armature winding is supplied from the m-phase source of alternating voltage of constant frequency.

7. Contactless magneto gear machine with a multipackage inductor according to claim 1 or 2, characterized in that when used as a synchronous motor powered armature winding is supplied from the m-phase source of alternating voltage adjustable frequency.

8. Contactless magneto gear machine with a multipackage inductor according to claim 1 or 2, characterized in that when used as a synchronous motor powered armature winding is supplied from the constant voltage source through a controlled inverter that supplies a sinusoidal voltage on the phase winding of the armature, depending on the sensor of angular position of the rotor for maximum torque.

9. Contactless magneto gear machine with a multipackage inductor according to claim 1 or 2, characterized in that when used as a DC motor powered armature winding is rectangular voltage pulses from the electronic switch according to a certain algorithm, depending on the sensor of angular position of the rotor for achievement of the maximum torque.

10. Contactless magneto gear machine with a multipackage inductor according to claim 1 or 2, characterized in that when used as a synchronous motor powered armature winding is supplied from a single phase source of alternating voltage of constant frequency using the phase-shifting element.

11. Contactless magneto gear machine with a multipackage inductor according to claim 1 or 2, characterized in that phase armature winding connected in star.

12. Contactless magneto gear machine with a multipackage inductor according to claim 1 or 2, characterized in that phase armature winding connected in a polygon.



 

Same patents:

FIELD: electrical engineering.

SUBSTANCE: contactless electromagnetic machine comprises inductor with permanent magnets, which produce alternating polarity of inductor poles, and laminated armature with concentrated poles, m - phase winding of which consists of coils that cover one armature pole each. Certain ratios are maintained, according to this invention, between number of Z1 armature poles, number of inductor p pole pairs, number of b armature winding phases and number of modules c.

EFFECT: provision of high specific torque at low frequencies of rotation in traction mode, and high specific capacity at high frequencies in generator mode with simultaneous provision of high reliability, manufacturability and repairability of proposed contactless electromagnetic machine.

14 cl, 15 dwg

FIELD: electricity.

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EFFECT: reducing eddy-current losses in rotor magnet conductor and armature reaction whereupon increase in coefficient of efficiency of suggested motor is achieved.

2 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: invention refers to the field of electric engineering, specifically to electric machines, and concerns implementation of synchronous motors exited by constant magnets and can be used as compact aggregate "motor - reduction gear" in mechanical systems with long operational life in impact condition, for example as motor - wheel in ecologically clean vehicles. Suggested synchronous motor contains body, stator pack with teeth and multiphase winding, shaft, interleaving cylinders of rotor and stator consisting of ferromagnetic and non-magnetic elements positioned along axis of rotation. In this device rotor cylinders are mechanically connected with rotor and stator cylinders - with body. At the same time, teeth and ferromagnetic elements of stator cylinders and magnetic conductor teeth and ferromagnetic elements of rotor cylinders have their own identical angle positions. According to the invention, in synchronous motor has been introduced following components: the second stator pack in the form of hollow cylinder with teeth on its inner surface, located outside hollow cylinders shaft with rotor of quick rotation containing high-coercivity constant magnets in the form of rectangular parallelepipeds located in radial direction, magnetised tangentially and oppositely, V-shaped pole tips located between hollow cylinders and stator pack with multiphase winding which pack has converted structure.

EFFECT: improvement of mass-dimensional parametres of these electric motors.

3 dwg

FIELD: electricity.

SUBSTANCE: invention can be used for electric drives, for example in electric propulsion systems of sea vessels, submarines, in traction drives of ground electrically propelled vehicles, hoisting devices, drives of pumps, fans, electric tools, etc., at increased requirements for level of torque pulsations, vibrations, noises and with the possibility of supplying power to motors from typical bridge converters which are batch-produced.

EFFECT: improving operating properties, reaching high efficiency and reliability, simplifying machine design as a whole, providing unique low-level vibration and noise characteristics of electric drive on the basis of the proposed non-contact synchronous machine owing to using stator representing non-ferromagnetic cylinder formed of copper windings of slotless design and filled with special compound with high thermal conductivity, which is placed between cylindrical surfaces of internal and external parts of the rotor made from ferromagnetic material.

1 dwg

FIELD: electric engineering.

SUBSTANCE: invention is related to the field of electric engineering and electric machine building and may be used in design and production of valve electric machines (motors and generators) of classic and inverted design for improvement of their power characteristics.

EFFECT: increased magnetic flows in working gaps of classic and inverted valve electric machines, which is achieved by creation of optimal shapes of pole and interpole magnets in mosaic magnetic systems of rotors.

2 cl, 2 dwg

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, particularly to synchronous machines with permanent-magnet excitation. The windings of each generator terminals are connected to two neighbouring windings of motor terminals. Electrical currents with the same direction arising in turns in active wires of each generator terminal flow in winding turns of neighbouring motor terminals, where they generate powerful local magnetic field pulses due to high magnetic permeability of their cores. These magnetic field pulses interact with magnetic field created by permanent magnets of an inductor, which results in acceleration of the rotor of the machine. After one permanent magnet with one pole comes out of the zone of the generator terminal, and the other two from the zone of motor terminals, other permanent magnets of the inductor enter these zones, though with an opposite pole. This gives rise to emf of opposite polarity in active wires of the generator terminal. In the same windings of motor terminals, currents with different direction flow, changing polarity of the latter. The direction of currents changes four times in one revolution, during which there is mutual transformation of electrical, magnetic and mechanical energy and interaction of magnetic field pulses of the stator with magnetic field of permanent magnets of the inductor, which leads to stable operation of the magnetoelectric machine.

EFFECT: easier regulation of speed and starting, increased efficiency due to presence of elements of the generator and motor at the same time, which interact with each other.

2 dwg

Electric motor // 2364017

FIELD: engines and pumps.

SUBSTANCE: invention is related to the field of electrical engineering, in particular - to electromagnetic rotors of electric motors. According to the first version of realisation, electric motor comprises stator and rotor installed in stator with the possibility of rotation and rotated by means of rotor interaction with stator, in which multiple elements of core and magnets are alternately installed along circumference, besides in radial direction of rotor axial length of core elements on external circumference inverted to stator, exceeds axial length of other sections of rotor core elements, axial length of rotor core elements on external circumference inverted to stator, is at least equal to axial length of stator, besides axial length of external circumference of magnets is more than axial length of other sections of magnets. According to the second version of realisation, electric motor comprises stator and rotor installed with the possibility of rotation in stator, in which multiple magnets and multiple core elements made of iron by means of powder metallurgy are alternately arranged in circumferential direction, besides manufactured specified core elements must be separated from each other, moreover in radial direction of rotor axial lengths of core element and rotor magnets on external surface inverted to stator exceed axial length of their other sections, besides axial lengths of core elements and rotor magnets on circumference inverted to stator are equal to axial length of stator, and magnets are installed in circumferential direction so that neighboring magnets are inverted to each other with identical poles, moreover there are stop protrusions that extend in circumferential direction of rotor, on every of two ends of specified core elements for prevention of magnets separation from core elements. Location of multiple core elements and magnets alternately in circumferential direction excludes passage of magnet flow of magnets between core elements that are neighboring along circumference, which provides for technical result that consists in minimisation of magnetic flux dispersion. Since neighboring magnets installed in circumferential direction are inverted to each other with identical poles, magnetic flux may be concentrated in appropriate core elements. Axial length of core elements and magnets in circumference inverted to stator in circumferential direction is more than axial length of accordingly other sections of core elements and magnets.

EFFECT: electric motor torque increases, and production costs are reduced.

11 cl, 9 dwg

FIELD: electric engineering.

SUBSTANCE: invention relates to electric engineering, particularly, to electric machine referred to contact-free d.c. electric machines. The single-valve contact-free d.c. machine, which is the subject of this invention, contains armature and inductor. According to the invention, the armature is comprised of two toroidal windings with ferromagnetic cores being electrically coupled between each other. The common terminal of both cores is connected to the d.c. voltage source through the valve and implemented as a fixed element. On the contrary, the inductor is made movable and represented as a hollow cylindrical magnetic core. Four permanent bar magnets with concave poles are put on each end of the above-mentioned magnetic core in crosslike order. By means of small gaps, convex N-poles of the first four magnets are separated from the internal surface of one toroidal winding. The same convex S-poles of the second four magnets are separated from the similar surface of the other winding by the same small gaps. Direct currents induced in generating mode are free from pulsation. Single voltage pulses of high amplitude may be used to design high-voltage units without step-up transformer or multiplying circuits, for example, electric ozonators.

EFFECT: simple design and improved electro-mechanical characteristics of dc machine, reduced price of dc machine.

2 dwg

FIELD: electric engineering.

SUBSTANCE: invention relates to electric engineering, and particularly, to inductor-type synchronous units represented as motor or generator where magnetic material of inductor induces magnetic flow in the given position at the side of magnetic field. In addition, the motor or generator shaft rotates synchronously as long as the armature polarity changes. The disclosed by the invention inductor-type synchronous unit includes excitation stator and excitation elements which help to produce N-pole and S-pole concentrically, and rotor. The rotating shaft is fixed to the above rotor. The N-pole inductor is arranged so that it is directed to N-pole of stator excitation element, while S-pole inductor is arranged so that the excitation elements are directed to S-pole of stator excitation element. The unit contains armature with coils being located so that they are directed to the said inductors of N-pole and S-pole.

EFFECT: simplified design of inductor-type synchronous unit.

8 cl, 17 dwg

Synchronous motor // 2356155

FIELD: electricity.

SUBSTANCE: invention is attributed to electric engineering, in particular to synchronous motors with constant magnets and can be used in industrial, transport and electromechanical systems. Suggested synchronous motor contains body, stator pack with teeth and polyphase winding, interleaved coaxial ice-pails of rotor and stator consisting of ferromagnetic and nonmagnetic elements located along axis of rotation, and shaft. Besides according to this invention inner stator is introduced into the motor. The motor has constant magnets which are tangentially and oppositely magnetised and radially located between pole tips with teeth on outer cylindrical surfaces. Teeth on adjacent pole tips are shifted by half of tooth grating relative to each another, and teeth and grooves width is the same. Stator teeth and ferromagnetic elements of stator ice-pails repeat position of pole tips, and ferromagnetic elements of stator ice-pails which are mechanically connected with the shaft have the same angular width as stator teeth but they are located uniformly in all pails.

EFFECT: improvement of mass-size parametres and dynamical characteristics of synchronous motors.

4 dwg

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: low-power single-phase synchronous motors.

SUBSTANCE: proposed synchronous motor has stator with U-shaped magnetic core carrying field coils, cylindrical rotor in the form of diametrically saturated permanent magnet, two fastening plates, and laminated locating device for unidirectional starting of rotor. Laminated locating device is installed with its one end on axis of one of fastening plates for rocking and on other end it has shaped hole coaxial with rotor which is provided with two projections formed by shifting two semicircles and is engageable with cam disposed on rotor end eccentrically to axis of revolution, its lateral end directed to interlocking end being disposed on rotor radius line; in order to avoid rotor entering dead zone during starting period, common axis of projections on laminated locating device is inclined through angle of 40 - 55 deg. to stator pole axis, and rotor cam axis is inclined through 90 deg. to rotor pole axis.

EFFECT: simplified design, reduced size of interlocking device in single-phase synchronous motor.

2 cl, 2 dwg

The invention relates to electrical engineering, namely, rotary power sources survey systems

The invention relates to electrical engineering, namely technology high-speed electrical machines with permanent magnets, and can also be used when building other rotating structures

The invention relates to electrical engineering and can be used in stand-alone power plants

FIELD: electricity.

SUBSTANCE: invention is attributed to electric engineering, in particular to low-speed high-torque electromotors, electrical drives and high-frequency electric generators. Suggested electrical machine contains armature with imbricated core, polyphase coil winding located on its pole tips, and cylinder double-pack inductor containing imbricated core with pole tips. The armature is made single-pack, its winding consists of coils each one of which is located on separate tooth. Excitation is performed by ring winding located between two inductor cores the teeth of which are shifted so that each tooth axis of the first armature coincides with each groove axis of the second armature of inductor. Herein, electrical machine consists of modules - elementary machines. Electric connection between rotating winding of electrical machine with double-pack inductor and external electric circuit is performed by means of brushes and contact rings, and number of armature teeth and number of teeth of inductor's any core is determined from expressions containing values that determine phase number of armature winding, number of armature's teeth falling on one module, and number of modules.

EFFECT: achieving high specific torque at low rotation frequencies in motor mode of operation of electrical machine, and high specific power at high frequencies in generator mode.

23 cl, 16 dwg, 1 tbl

Electrical machine // 2348098

FIELD: electricity.

SUBSTANCE: present invention pertains to electrical engineering, particularly to electrical machines and electric drive. The electrical machine has a rotor made from magnetic material with permanent magnets, polarity of which alternates at a tangent, and a stator, for which the core is made from toothed magnetic rings, the number of which on each magnetic ring is twice less than the number of rotor poles. Armature windings are circular on the number of phases, distributed in the axial direction and are put between two neighbouring magnetic rings. The teeth of magnetic rings, between which a ring winding is put, are shifted by an angle, equal to the angular width of the rotor pole. The angular position of the teeth of magnetic rings of different phases differs by an angle 2π/m radians, where m is the number of phases. According to the invention, magnetic rings of the electrical machine are made from soft magnetic composite material with teeth, projecting in the axial direction. Teeth of magnetic rings, between which the winding ring is put, are directed towards each other in recesses of the adjacent magnetic ring. Between two adjacent magnetic rings of a given phase, there are toroidal magnetic circuits for closing the magnetic flux of the phase.

EFFECT: increased power with reduced mass and size of the electrical machine.

2 cl, 5 dwg

FIELD: electrical engineering; electrical machines and inductor generators in particular.

SUBSTANCE: proposed synchronous generator that has front and rear end plates with holes, stator in the form of stack that carries running winding, rotor incorporating field source and claw-shaped shoes, all built in rectifier, and hollow-shaft rotor with radial holes; novelty is that end plates mount angle-shaped pipe connections with holes of different diameter; smaller-diameter holes are facing shaft holes and larger diameter ones are facing oncoming air stream. Such mechanical design enables effective use of inlet air stream action with respect to widely used progressive crosswise arrangement of front-drive motor-car engines. In addition, shaft provided with through hole and two inlet pipe connections makes it theoretically possible to enhance cooling air flowrate by two times and to likewise improve heat transfer.

EFFECT: improved performance characteristics of inductor generator due to reduced power requirement and improved thermal characteristics.

1 cl, 1 dwg

Inductor generator // 2318289

FIELD: electrical engineering; electrical machines such as inductor generators.

SUBSTANCE: proposed inductor generator has front and rear end plates with radial holes, stator in the form of stack carrying running winding, rotor in the form of sprocket with axial magnetic circuits, built-in rectifier, field coils mounted on end plates and placed in magnetic contact with axial magnetic circuits, as well as rotor hollow shaft with radial holes, one of its extensions being provided with plug and other one communicates with inlet port of cooling system. Novelty is that rotor is provided with additional disks having radial ducts in vicinity of radial holes of rotor, radial holes of end plates, and end portions of rotor winding.

EFFECT: improved thermophysical characteristics, simplified mechanical design due to dispensing with separate fan.

1 cl, 3 dwg

FIELD: electrical engineering; improvement of thyratron-inductor motors.

SUBSTANCE: proposed nonreversible two-phase thyratron-inductor motor has salient-pole symmetrical stator 1 carrying concentrated windings and unwound rotor 2. Stator 1 has eight poles and rotor 2, four ones. Surface of rotor 2 has three steps over its length, angular width of each step being bSR = bZR/3 = bZS, where bZR is angular width of rotor pole; bZR is angular width of stator pole, and lengths of first, second, and third steps are as follows: l1 = 1/3 l; l2 = 2/3 l; l3 = 1, where l is rotor length; each of two phase windings A and B incorporates four series-connected coils.

EFFECT: enhanced torque due to mutual induction of phase windings, reduced counter emf in transients and reactive power.

1 cl, 5 dwg

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