Contactless reducer electromagnetic machine

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

 

The invention relates to electrical engineering and for the structural design of a contactless magneto-electric machines with electromagnetic reduction intended for use as a motor-wheels, drum motors, 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 the high-frequency electric generators.

Known brushless synchronous generator with permanent magnets (Patent RU 2303849 C1 IPC NC 21/18, H02K 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 arranged in pairs opposite each other, a device for rectifying an electric current, where each of the electromagnets has two coils sequentially counter-winding direction, while each of the coils of the electromagnets is what the hell 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 disadvantages are the counterpart of the complexity and high cost structure, defined by a large number of permanent magnets, 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.

Closest to the technical essence of the present invention (its prototype) is a synchronous gear motor (Patent RU 2054220 C1 IPC 6 NC 37/00, NC 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 Z r=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 in such a way that with 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, which makes them difficult to manufacture in mass (mass) production.

The aim of the present invention is to provide a relatively simple, reliable and technologically advanced, the first design of a contactless magneto-electric machine with a high energy performance with high specific torque on the shaft and high electromagnetic reduction of speed in electric mode engine with 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.

The technical result of the present invention to provide a high performance contactless magneto gear machine. To this end, the stator contains explicit pole on the inner surface of which is made of elementary teeth, m-phase coil of the armature winding, each coil which is placed on the corresponding pole of the armature winding ferromagnetic toothed rotor with two cores of the inductor, shifted relative to each other in the tangential direction at half subcatego division inductor, between the cores of the inductor has a toroidal permanent magnet magnetized in the axial direction to create a magnetic flux excitation. For machines of large capacity you can use instead of a single integral toroidal permanent magnet of a number of segmental permanent magnets magnetized in the axial load is flax direction and collected in the form of the Torah.

When using contactless magneto gear machine as a synchronous electric motor powered 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 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.

Contactless magneto gear machine can also be operated as a synchronous m-phase generator of sinusoidal EMF and as a synchronous m-phase generator variable EMF direct ogolney forms without constant component.

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

The invention is illustrated by drawings:

figure 1 - General view of the contactless magneto gear machines with internal inductor and an external anchor,

figure 2 - General view of the contactless magneto gear machine with electromagnetic reduction with external inductor and internal anchor,

figure 3÷14 - 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 windings of the armature and the inclusion of the windings of the armature 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 gear magneto-electric machine, the number of poles of the armature Z1pthe number of elementary teeth on the pole anchors Z1s=1, 2, 3, 4..., the number of phases of the armature winding m=3, 4, 5, 6..., the number of poles of the armature in the phase of Z1m=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 winding in the phase of the armature 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.

Figure 3÷14 presents examples of implementation of the invention in accordance with the formula(1), (2), (3) in cross sections of the cores of the armature and inductor contactless gear magnetoelectric machine, connecting circuits of the coils m-phase windings of the armature with the inclusion of the windings of the armature in the motor mode to source voltages with different number of phases and charts currents (MDS). According to the figures of drawings of cross-sections of the cores of the armature and the inductor and the shapes of the connecting circuits of the coils of the m-phase armature windings is illustrated in the table. The letter m in the table denotes the number of phases of the armature winding contactless gear magneto-electric machine, and mEastthe number of phases voltage source. The position of the cores of the inductor relative to the armature core in the figure in motor mode corresponds to the time at which illustrates the position vectors of the currents on the corresponding figure of the circuit connections of the coils m-phase armature winding (table).

On IG the circuit connections 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 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/wAN=1-2.

On Fig the circuit connections of the coils 6-phase armature winding connection on 3-phase voltage source.

Consider the design of a contactless magneto gear machine with an external anchor and internal inductor (figure 1, 3, 5, 7, 9, 11 and 13). Paramagnetically with a high frequency of the armature core 1 is made of cytowany is from electrical steel with high magnetic permeability and is pressed into the housing 2, made of steel with high magnetic permeability. On each expressed pole 13 and armature are made of elementary teeth 14. At the poles 13 of the armature posted by bobbin winding 3 anchors. Coil 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. If the shaft is magnetic, then it fixed non-magnetic sleeve 7, the thickness of which in the radial direction is significantly greater than the air gap between the armature and the inductor. The active portion of the inductor is composed of the first core 8, the first magnetic sleeve 9, the permanent magnet 10, the second core 11 and the second magnetic sleeve 12. The first 8 and second 11 cores and sleeves 9 and 12 are made of a material with high magnetic permeability. Cores 8 and 11 are made of laminated electrical steel and are evenly circumferentially distributed teeth 15. To reduce the cost of construction of the cores 8 and 11 may be performed by metal from solid blocks of steel with high magnetic permeability. In this case, they are attached directly to the sleeve 7, i.e. the sleeve 9 and 12 are not installed. The permanent magnet 10 is made in the form of a torus and magnetized in the axial direction the AI. For machines of low power permanent magnet perform a whole, for machines of great power - a composite of segmental permanent magnets magnetized in the axial direction and is collected in the form of a torus. The first 8 and second 11 laminated core inductor zapressovyvajutsja respectively on the magnetic sleeve 9 and 12, and a permanent magnet 10 is attached to the nonmagnetic sleeve 7 between the magnetic sleeves 9 and 12. If the shaft 5 is made of non-magnetic steel (mainly for machines of small capacity), the magnetic sleeve 9 and 12, and a permanent magnet 10 attached directly to the shaft 5. The first 8 and second 11-core inductor shifted relative to each other in the tangential direction at half subcatego division tZ2the inductor. Thus, when it is shown in figure 1 of the magnetization of the permanent magnet 10 "S-N", the teeth of the first core 8 of the inductor is magnetized as a South pole "S", and the teeth of the second core 11 of the inductor is magnetized as a North pole "N". The magnetic flux of the inductor caused by the permanent magnet 10, passes through the second sleeve 12, the second core inductor 11, the air gap between the armature and the inductor pole 13 and armature core 1, the magnetic body 2 in the axial direction, the core 1 and the pole 13 of the armature air gap between the armature and the inductor and is connected through the first 8 core inductor and the first sleeve 9.

Non-magnetic sleeve 7 is necessary in the case of the magnetic shaft and serves to ensure that the magnetic flux of the permanent magnet 10 is not confined through the sleeve 9 and 12 and the shaft 5, and also through the shaft 5, the bearings 4, bearing shields 6 and the housing 2.

In the case of a design with an external inductor (2) the role housing plays a non-magnetic sleeve 7.

Contactless magneto gear machine in motor and generator modes.

Consider motor mode (figure 1). On phase winding 3 anchors from the external circuit - supply circuit serves an alternating voltage on the winding flowing alternating current, a leading variable in time MDS anchors. 4, 6, 8, 10, 12 and 14 shows vector diagrams of currents 16 for the respective multi-phase windings of the armature shown in these same figures. Symmetric multi-phase voltage fed to the terminals of these windings, change over time, and the vectors of currents turn 16 in axes Hu counterclockwise. Consider the point in time when the currents are projected on the y-axis. Coil winding 3 anchors called the letter belonging to the corresponding phase, and a numeral indicating the number of pole 13 of the armature core 1. For example, the coil B2 - coil phase, located on the second pole 13 of the armature core 7. 4, 6, 8, 10, 12 and 14, the directions of currents in the coil is Ah, in accordance with the projection vectors of the currents on the y axis. This elementary teeth 14 that are located on the respective poles 13 of the anchor, which focused on coil winding 3 anchors, form a South pole S and a North pole "N". Due to the interaction variable MDS anchors with a constant MDS inductor generated by the permanent magnet 10, the rotor of the applied torque, that is, changing supply voltages applied to the armature coil with a frequency f(Hz), the rotor rotates at synchronous speed n=60·f/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 (figure 1). During rotation of the rotor by a third-party source-torque rotational speed n of the magnetic flux inductor, threading the air gap and pole 13 of the anchor side of the inductor, anchors, creates the poles 13 of the armature of an alternating magnetic flux, suggestive in the winding coils 3 anchors variable EMF. If the external circuit load circuit is closed, the winding 3 of the armature alternating current flows, the electric power is given to the consumer.

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

1. Contactless magneto gear mash is on, containing the stator salient poles on the inner surface of which is made of elementary teeth Z1steeth on each pole, into the large slots between the poles of the stacked coil winding focused on one on the corresponding pole, and a toothed rotor, characterized in that the coil winding is m-phase coil of the armature winding, winding ferromagnetic toothed rotor contains two core inductor, offset relative to each other in the tangential direction at half subcatego division tZ2inductor, between the cores of the inductor has a toroidal permanent magnet magnetized in the axial direction, the number of poles of the armature Z1p=m·Z1mwhere m=3, 4, 5, 6... - the number of phases of the armature winding, Z1m=1, 2, 3, 4... - the number of poles of the armature in phase, the total number of teeth of the armature Z1=Z1p·Z1swhere Z1s=1, 2, 3, 4... - the number of elementary teeth on the pole of the armature, the number of teeth on each core inductor Z2=Z1±Z1m.

2. Contactless gear magneto-electric machine according to claim 1, characterized in that the permanent magnet is made whole.

3. Contactless gear magneto-electric machine according to claim 1, characterized in that the permanent magnet is made use of several permanent magnets.

4. Contactless reductor what I magnetoelectric machine according to claim 1, characterized in that the anchor is located outside the inductor inside.

5. Contactless gear magneto-electric machine according to claim 1, characterized in that the inductor is located on the outside of the anchor inside.

6. Contactless gear magneto-electric machine according to claim 4 or 5, characterized in that when used as a synchronous motor, the power armature winding is supplied from the m-phase source of alternating voltage of constant frequency.

7. Contactless gear magneto-electric machine according to claim 4 or 5, characterized in that when used as a synchronous motor, the power armature winding is supplied from the m-phase source of alternating voltage adjustable frequency.

8. Contactless gear magneto-electric machine according to claim 4 or 5, characterized in that when used as a synchronous motor, the power 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 gear magneto-electric machine according to claim 4 or 5, characterized in that when used as a DC motor with independent in what buggenum food 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 to achieve the maximum torque.

10. Contactless gear magneto-electric machine according to claim 6, 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 gear magneto-electric machine according to claim 1, characterized in that phase armature winding connected in star.

12. Contactless gear magneto-electric machine according to claim 1, characterized in that phase armature winding connected in a polygon.



 

Same patents:

FIELD: electricity.

SUBSTANCE: proposed face-type electrical machine includes two pairs of packages containing stators of different diametres, which are shifted in axial direction with regard to each other, and two pairs of packages containing rotors of different diametre, which are shifted in axial direction with regard to each other. In addition, one pair of large diametre stator packages is installed on inner surface of machine housing, one pair of minor diametre stator packages is installed on end bracket. Rotor packages are provided with poles represented as permanent magnets and installed on common basis so that poles of minor diametre rotor packages are faced to the working surfaces of minor diametre stator packages, and poles of the pair of large diametre rotor packages are directed to the working surfaces of the pair of large diametre stator packages.

EFFECT: increased specific power of face-type electrical machine and increased power in radial dimensions.

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EFFECT: generator manufacture technology simplification and generated voltage quality improvement.

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EFFECT: simplified design, reduction of weight, dimensions and specific cost of power generating systems with provision of alternating current generation with required voltage in low-speed and uneven mode with efficiency factor comparable to traditional systems of electromechanical transformation.

2 cl, 6 dwg

FIELD: electric engineering.

SUBSTANCE: invention relates to noncontact electric generators with permanent magnets for small wind and hydraulic power plants (SPP). Peculiar feature of SPP is represented by relatively low breakaway torques of wind and hydraulic motors at low speeds of wind and water flows, which imposes specific requirement for electric generator - minimum braking torque at rotor axis of electric generator from the side of stator magnet systems. Method provides for compensation of retraction forces of some permanent magnets of rotor into some magnetic systems of stator by means of ejection forces of other permanent rotor magnets into other magnetic systems of stator. Proposed invention provides for minimisation of force action at generator rotor by forces of magnetic interaction of rotor magnetic sectors with magnetic systems of stator at simultaneous provision of high coefficient of transformation of mechanical energy of rotor rotation into electric one in wide range, both speeds of rotor rotation and value of rotation torque transmitted from wind motor or hydromotor.

EFFECT: elimination of rotor braking by mutual compensation of braking forces acting at rotor from the side of stator magnetic systems, which are inevitably present in electric generators with permanent magnets.

7 cl, 2 dwg

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 the field of electric engineering and in particular to slow-speed high-torque electric motors, electric drives and generators, relates to peculiarities of design of contactless magnetoelectric machines with electromagnet reduction and may be used in systems of automatics, as motor-wheels, motor-drums, starter-generators, electric steering boosters, direct drives in domestic appliances, electric drives of 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 magnetoelectric machine with pole geared inductor comprises stator, anchor core of which is assembled from insulated sheets of electrotechnical steel with high magnetic permeability and has explicit poles, on inner surface of which there are elementary cogs provided, coil m - phased winding of anchor, each coil of which is arranged on according explicit pole of anchor by one on each pole, and rotor comprising inductor with geared poles symmetrically distributed along cylindrical surface with identical number of elementary cogs on each pole, between geared poles of inductor there are permanent magnets installed, which are magnetised in tangential direction. When certain ratios are maintained between number of explicit poles of anchor, number of elementary cogs on explicit pole of anchor, number of explicit poles of anchor in phase, common number of anchor cogs, number of geared poles of inductor, common number of inductor cogs, number of elementary cogs on geared pole of inductor and number of phases in m-phased winding of anchor in contactless reductor magnetoelectric machine with pole geared inductor.

EFFECT: 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.

10 cl, 11 dwg

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: 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 may be used in systems of automatics, as motor - wheels, motor - drums, starter - generators, electric power steering, direct drives in electrical appliances, electric drives of high and medium capacity of vessels, vehicles, concrete mixers, weight-lifting mechanisms, belt conveyors, pumps for pumping of fluids, mechanisms with high torque on shaft and low frequencies of its rotation, and also as wind-powered generators, hydraulic generators, high-frequency electric generators and synchronous generators of frequency converters. Proposed contactless reducer electric machine with electromagnet excitation comprises geared stator with odd and even packs charged from insulated sheets of electric steel with high magnetic permeability with explicit poles, on inner surface of which there are elementary cogs, besides, packets of stator in tangential direction are arranged so that axes of their explicit poles of all stator packets arranged opposite to each other in axial direction match, and between odd and even packets of stator there is inductor excitation winding arranged in the form of circular coils with longitudinal axis, matching with longitudinal axis of machine, coil m-phase winding of anchor, each coil of which is arranged on according explicit poles of stator packets and covers one explicit pole of each packet, and winding-free ferromagnetic rotor, comprising non-magnet shaft and soft magnetic bush on it with odd and even packets charged from insulated sheets of electric steel with high magnetic permeability with identical number of teeth at each packet, besides, even packets of rotor are displaced relative to odd ones in tangential direction by half of gear division of rotor packet. At the same time certain ratios are maintained between number of explicit poles of each 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 of each rotor packet and number of phases of m-phase winding of anchor of contactless reducer electric machine with electromagnetic excitation.

EFFECT: provision of 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.

17 cl, 15 dwg, 1 tbl

FIELD: electricity.

SUBSTANCE: electric reducing machine with electromagnetic excitation contains stator with salient poles on the inner surface of which elementary teeth are executed. The stator's m-phase concentrated winding of armature is comprised of coils, each coil wraps corresponding armature pole. The machine also contains ferromagnetic toothed rotor without windings with odd and even inductor cores the number of which is not less than two. Even inductor cores are shifted relative to odd cores in tangential direction by half of inductor tooth mark, between odd and even inductor cores the ring-shaped inductor exciting coils are located. Electric connection of inductor exciting winding with constant (rectified) voltage source is implemented via contact rings and brushes. In this machine, certain relations between armature poles number, elementary teeth number on armature pole, number of teeth on each inductor core and armature winding phases number of electric reducing machine with electromagnetic excitation are observed.

EFFECT: achievement of high power and operational indicators, high specific rotation torque on shaft and high electromagnetic reduction of rotation speed in electric motor mode and high specific power at high frequencies of EMF in electric generator mode.

16 cl, 14 dwg, 1 tbl

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