CN101515741B - Method for winding rotor coil of motor - Google Patents
Method for winding rotor coil of motor Download PDFInfo
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- CN101515741B CN101515741B CN2008100079592A CN200810007959A CN101515741B CN 101515741 B CN101515741 B CN 101515741B CN 2008100079592 A CN2008100079592 A CN 2008100079592A CN 200810007959 A CN200810007959 A CN 200810007959A CN 101515741 B CN101515741 B CN 101515741B
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- 238000004804 winding Methods 0.000 title claims abstract description 209
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000004020 conductor Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 230000001360 synchronised effect Effects 0.000 abstract description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 6
- 229910000976 Electrical steel Inorganic materials 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 239000010949 copper Substances 0.000 abstract description 6
- 230000005291 magnetic effect Effects 0.000 description 18
- 238000010586 diagram Methods 0.000 description 13
- 230000005284 excitation Effects 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000010276 construction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 235000021186 dishes Nutrition 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910002551 Fe-Mn Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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Abstract
The invention relates to a method for winding a rotor winding coil of a motor, which comprises the following steps that: an effective side of the rotor coil winding and an effective side of adjacent same coil winding are foldback and wound through a connection side of the coil winding; the distance between a sideline of the effective side of the rotor coil winding and a sideline of the effective side of the adjacent same coil winding is one pitch; and if a triphase motor is manufactured, the rotor coil winding of the triphase motor required having three groups of part-coil windings with the same specification, each group of the part-coil windings can perform winding by adopting the winding method, and the three groups of the part-coil windings comprise one effective side and are evenly distributed in one pitch. Therefore, the wavy winding adopted by the invention reduces fussy embedded winding manufacturing process, the copper consumption and the cost in the manufacturing process of a generator and the motor; in addition, the rotor can be made by independently using the windings in a synchronous generator and the motor so as to reduce the consumptive materials of silicon-steel plates needed by a rotor core.
Description
Technical field
The present invention relates to a kind of motor (comprising generator and motor), relate in particular to a kind of coil winding methods of rotor.
Background technology
Motor is a device of realizing power conversion by electromagnetic induction principle.Electricity is the form existence with " road " in motor, promptly is made of the circuit of motor the coil in the motor, winding; Magnetic is to exist with the form of " field " in motor.All electromagnetic process that taken place in generator and motor rotor and stator are all relevant with motor windings, motor windings be exchange, crucial electromagnetic component in the direct current machine.
Coil is an elementary cell of forming motor windings, different motors has different winding configurations, remove beyond the integrally-built windings such as centralized windings such as looking like the excitation of direct current generator winding and cage rotor, usually by one or more insulated electric conductor, form by certain number of turn and shape coiling and colligation in coil winding former (groove).
The straight line portion that coil embeds in the iron core slot is called effective edge L
Effectively, effective edge L
EffectivelyBe the part of electromagnetic energy conversion, and directly switching energy of the outer coiler part of iron core slot is stretched out at both ends, only play an invalid edges L who connects the function served as bridge of adjacent two effective edges
Connect, with coil effective edge L
EffectivelyForm the part of winding coil closed-loop path together.Therefore, effective edge L
EffectivelyThe ratio of shared whole winding has determined the effective rate of utilization η of coil.
The coil windings of motor is according to specification design decisions such as motor model and rated power, voltage, electric currents.The size of rated power has determined required coil windings effective edge L
EffectivelyThe circle warp, the motor that rated power is little, electric current is little, circle is through just little, the motor that rated power is big, electric current is big, circle is through just big; For motor windings, particularly for multiturn number, multiply type motor windings, the invalid edges L that serves as a connection
ConnectJust long more, circle like this, has not only been wasted raw material through just thick more, has also increased the volume (space availability ratio of utmost point groove is low) of generator and motor rotor, stator.
As everyone knows, desire to make the motor operate as normal, must follow certain winding and arrange principle, the arrangement principle of common electric machine is as follows:
1) sense of current of interior all conductors of magnetic pole must be consistent;
2) sense of current of all conductors must be opposite in adjacent two magnetic poles;
3), or be as the criterion with lower floor's winding if two layer winding is as the criterion with the upper strata winding.
See also Figure 1A, Figure 1A is depicted as the coil winding schematic diagram of prior art rotor winding.For the coil that is most widely used at present, from the radial angle of vision, motor windings and excitatory magnetic pole generator and motor rotor, stator axially and the footpath upwards all adopt closed winding (closed loop winding).We suppose that this rotor winding is to use in the big motor of rated power, in order to guarantee bigger coil windings circle warp, a kind of mode can be used the lead coiling in big line footpath, if but wire diameter excessive (generally at 1.6mm), then can be because of line is thick difficult around difficult embedding, another kind of mode can also adopt the less lead in line footpath and around replacement; No matter but all there is following shortcoming in above-mentioned which kind of method:
At first, for multiturn number, multiply type motor windings, the invalid edges L that serves as a connection
ConnectOversize, the effective rate of utilization η of coil is low, has increased the consumption of copper, has wasted raw material.
Secondly, the volume and the weight of generator and motor rotor have been increased.
Moreover for the consistency that satisfies end winding length, evenly smooth, and electric and mechanical balance, existing lead winding technology is higher to the coiling technological requirement, and winding manufacture craft loaded down with trivial details caused the puzzlement of assembling easily.
Therefore, how to develop and a kind of winding method that improves the motor-spin-coil of prior art defective, real in pressing for the problem of solution at present.
Summary of the invention
Deficiency in view of above-mentioned technology the objective of the invention is to, provide a kind of on described generator and motor rotor the method with waveform (snakelike) winding around.The method of this winding around can both be suitable for for synchronous generator and synchronous motor.
The objective of the invention is to realize by the following technical solutions:
A kind of coil winding methods of rotor, comprise: the effective edge of the effective edge of described rotor coil winding and adjacent same coil windings is by the winding of turning back of the fillet of described coil windings, and the distance between the sideline of the sideline of described rotor coil winding effective edge and adjacent same coil windings effective edge is a pitch.
According to the coil winding methods of described rotor, wherein, described coil windings is multiturn number, multiply type winding.
According to the coil winding methods of described rotor, wherein, described motor rotor core comprises that a plurality of coils embed groove, and each the strand circle in the coil windings evenly embeds at adjacent several coils and embeds in the groove.
According to the coil winding methods of described rotor, wherein, described coil windings is made by the sloping film alloy of height insulated conductor.
The present invention also provides a kind of coil winding methods of rotor, described rotor coil winding comprises the sub-coil winding of three groups of same sizes, every component coil windings also can adopt above-mentioned winding method to carry out coiling, and the effective edge that three component coil windings are comprised separately is distributed in the pitch successively.
According to the coil winding methods of described rotor, wherein, described coil windings is multiturn number, multiply type winding.
According to the coil winding methods of described rotor, wherein, described motor rotor core comprises that a plurality of coils embed groove, and each coil windings evenly embeds at adjacent several coils and embeds in the groove.
According to the coil winding methods of described rotor, wherein, described coil windings is made by the sloping film alloy of height insulated conductor.
From technique scheme as can be seen, the present invention is open winding (an open loop type winding) on the radially aspect of the rotor of motor, stator, but see into that from the axial section of rotor, stator waveform winding of the present invention still still is a big closed coil windings.Compared with prior art, beneficial effect of the present invention is:
At first, because the present invention has effectively reduced the rotor at motor, the invalid edges L that the stator winding coil serves as a connection
ConnectLength, particularly for multiturn number, multiply type motor windings, improved the effective rate of utilization η of coil, reduced the consumption of copper, reduced cost.
Secondly, the volume and the weight of generator and motor rotor have been reduced.
Moreover this wave mode winding has reduced loaded down with trivial details winding manufacture craft in the manufacturing process of generator, motor.
And, the computational process of simplification motor windings on the principle of electromagnetism.
Description of drawings
Figure 1A is the coil winding schematic diagram of prior art rotor winding;
Figure 1B is the coil winding schematic diagram of embodiment of the invention rotor winding;
Fig. 2 A is that embodiment of the invention motor waveform winding rotates the schematic diagram of cutting magnetic line along the F drawing direction between N utmost point S is extremely following;
Fig. 2 B is the AX coil windings along drawing force F direction move the sinusoidal alternating electromotive force that produced and the oscillogram of sinusoidal alternating current;
Fig. 3 A is that embodiment of the invention synchronous AC two utmost point three-phase sub-thread formula wave windings divide the groove wiring diagram;
Fig. 3 B is for adopting three strands of formula wave windings of embodiment of the invention synchronous AC two utmost point three-phases wiring diagram;
Fig. 4 A is synchronous high frequency, high pressure, high-power generator stator and the rotor structure vertical view of the embodiment of the invention;
Fig. 4 B is synchronous high frequency, high pressure, high-power generator stator and the rotor structure vertical view of the embodiment of the invention;
The structure of the linear motion actuator schematic diagram of Fig. 5 A for adopting winding method of the present invention to make;
Fig. 5 B is the partial structurtes schematic diagram of linear electric motors shown in Fig. 5 A;
The aeroengine rotor winding construction profile of Fig. 6 A for adopting winding method of the present invention to make;
The aeroengine rotor winding construction vertical view of Fig. 6 B for adopting winding method of the present invention to make.
Embodiment
Be elaborated below in conjunction with the winding construction of accompanying drawing to motor stator of the present invention.
Motor windings of the present invention is still multiturn number, the multiply type motor windings of being made up of a plurality of coils or coil groups, the expansion side of rotor (shown in Fig. 2 B) in wave shape or snakelike.Different with the coil canoe shown in Figure 1A is, on the angle of vision, the coil winding methods of motor waveform winding of the present invention can be thought open winding (open loop type winding) on the radially aspect of the rotor of motor, stator; Yet, see into that from the axial section of rotor, stator waveform winding of the present invention still is a big closed coil windings.
Specifically, the canoe of coil windings of the present invention is: conductor coils when twining, the effective edge L of described rotor coil winding
EffectivelyEffective edge L with adjacent same coil windings
EffectivelyFillet L by described coil windings
ConnectWinding and described rotor coil winding effective edge L turn back
EffectivelyThe sideline and adjacent same coil windings effective edge L
EffectivelyThe sideline between distance be a pitch.
See also Fig. 2 A, Fig. 2 A is that embodiment of the invention waveform motor windings is rotated the schematic diagram of cutting magnetic line along the F drawing direction between the N utmost point and the S utmost point.As shown in the figure, the AX coil windings is multiturn number, the multiply molded lines circle winding of W circle, if the effective edge perpendicular cuts magnetic line of force of AX coil windings, e is according to faraday electromagnetic induction winding head and the tail AX end electromotive force:
Shown in Fig. 2 A, the per share effective length L of AX coil windings
EffectivelyMove to the b point from a point, winding AX holds the maximum effective value of the positive half cycle of formed simple alternating current electromotive force to be:
e＝-E
MAX
Special shape according to faraday electromagnetic induction:
Can obtain effectively section L of waveform (snakelike) winding
EffectivelyElectromotive force be:
Wherein: e is the induced potential in the winding coil, and unit is volt
B is the magnetic flux density in magnetic field, and unit is a tesla, and 1 tesla is 10
4Gauss
L
EffectivelyBe the effective length of coil windings, unit is a rice
Dx is the distance that a point is ordered to b, i.e. pole span τ
dt＝ωt
V is coil windings effective length L
EffectivelyMovement velocity in alternating magnetic field, unit is a meter per second
Shown in Fig. 2 A, dx is exactly the move distance of winding cutting magnetic line effective length L between 0 °～90 °, W circle line is arranged in per share in waveform (snakelike) the winding AX, and winding AX conductor internal induction electromotive force should be:
E=B * L
Effectively* W * Z * V
Wherein, B is the magnetic flux density in magnetic field, and unit is a tesla
Z is number of share of stock (being the groove number of motor)
See also Fig. 2 B again, Fig. 2 B is the AX coil windings along drawing force F direction move the sinusoidal alternating electromotive force that produced and the oscillogram of sinusoidal alternating current i.The distance (shown in Fig. 2 A) of two pole span τ of the every motion of AX coil windings just produces one and exchanges the cycle electromotive force, and promptly from the N polar motion to the S utmost point (a point is to the b point), coil windings generates the induced electromotive force of a cycle; The frequency f of the sinusoidal current among the coil windings AX is:
f＝Z×P×n
Wherein: Z is winding number of share of stock (number of slots)
P is a number of pole-pairs
N is the per second rotating cycle
If waveform (snakelike) winding is used in the synchronous generator, the anti-drawing torque f in the winding uses than-Sa electromagnetic laws and obtains:
F=B * i * L
Effectively
Wherein: B is the magnetic flux density in magnetic field, and unit is a tesla, and 1 tesla is 10
4Gauss
I is the total current that coil windings flows through
L
EffectivelyBe total effective length of conductor, unit is a rice
F is an electromagnetic force, and unit is newton
See also Fig. 3 A, Fig. 3 A divides the groove wiring diagram for adopting embodiment of the invention synchronous AC two utmost point three-phase sub-thread formula wave windings.As shown in the figure, described rotor coil winding comprises the coil sub-winding of three groups of same sizes, and every component coil windings adopts the described winding method of Fig. 2 B to carry out coiling, and the effective edge that three component coil windings are comprised separately is distributed in the pitch successively.
Described coil windings can be multiturn number, multiply type winding, and described motor rotor core comprises that a plurality of coils embed groove, and each the strand circle in the coil windings evenly embeds at adjacent several coils and embeds in the groove.See also Fig. 3 B, Fig. 3 B is for adopting three strands of formula wave windings of embodiment of the invention synchronous AC two utmost point three-phases wiring diagram.
From Fig. 3 A and Fig. 3 B as can be seen, waveform winding shown in the embodiment of the invention can be saved a large amount of copper material consumption in making synchronous machine, and it is simple to walk Wiring technology during the processing winding, save the cumbersome inserting-coil process of closed in the past winding, lowered cost of manufacture.Need to prove, more than two line of rabbet joint distribution maps be only limited to the synchronized engine or the synchronous motor cloth line of rabbet joint, be not suitable for asynchronous motor.
In following several embodiment, winding can directly substitute rotor in synchronous generator and motor, and for example, described coil windings is made by the sloping film alloy of height insulated conductor, saved rotor core, reduced the consumptive material of rotor silicon steel sheet and simplified manufacture craft by silicon steel plate stacking.
Embodiment one
See also Fig. 4 A and Fig. 4 B, Fig. 4 A is synchronous high frequency, high pressure, high-power generator stator and the rotor structure vertical view of the embodiment of the invention; Fig. 4 B is synchronous high frequency, high pressure, high-power generator stator and the rotor structure vertical view of the embodiment of the invention.
As shown in the figure, synchronous alternator is made up of fixing two stators (external stator 2 and internal stator 3) and rotatable rotor 1 two large divisions, and the label of the coil windings in the rotor 1 is 4.Be used for the excitation pole number that the stator of excitation has, can determine according to actual needs that in the present embodiment, the stator that is used for excitation has 12 utmost point excitation poles.The frequency conversion of this generator, transformation output are determined by the rotational speed regulation of former pull-over gear entirely.In addition, rotor 1 available cross-section of this synchronous generator is made separately for circular, rectangle or square etc. waveform winding, saved the consumptive material of the required silicon steel sheet of rotor core, and, the rotor 1 of this synchronous generator can be made without copper material, but makes with the metallic iron material of the contour μ magnetic conduction of the high sloping film alloy of the silicon steel of engineering pure iron or high permeability.
Embodiment two
See also Fig. 5 A and Fig. 5 B, the linear motor rotor winding construction schematic diagram of Fig. 5 A for adopting winding method of the present invention to make; Fig. 5 B is the partial structurtes schematic diagram of linear motor rotor winding.
As shown in the figure, this linear electric motors excitation pole is a linear structure, and wave winding is the magnetic line of force of vertical-type perpendicular cuts excitation pole.F is the direction of motion among the figure, certainly, also can reversely move.Among Fig. 5 A shown in the label 5 is the winding of these linear electric motors, the winding available cross-section of these linear electric motors is that the waveform winding of sheet is made separately, also available engineering pure iron of this winding or high magnetic conduction ferromagnetic material are made, and this direct current machine also can be used as generator and uses.
Embodiment three
See also Fig. 6 A and Fig. 6 B, the aeroengine rotor winding construction generalized section of Fig. 6 A for adopting winding method of the present invention to make; The aeroengine rotor winding construction vertical view of Fig. 6 B for adopting winding method of the present invention to make.The excitation pole of this aero-engine high proud stupid power permanent magnet of the high remanent magnetism of Ru-Fe-Mn, the winding of this aeroengine rotor also available cross-section is that circle, rectangle, sheet or waveform winding such as square are made separately, and the sloping film alloy of the also available height of this winding insulated conductor is made.
In addition, in order to improve the power of engine to a greater extent, the excitation pole of this aero-engine stator is a dish configuration, this dish configuration can be as required one stack excitation pole and waveform winding dish increase power with coiling, shown in the label 6 and 7 among Fig. 6 A and Fig. 6 B, this engine has 9 dish waveform winding dishes and 10 dish excitation pole dishes.According to the structure of Fig. 6 B, this high-power output, high-revolving engine can the linear regulation rotating speeds according to the power frequency of power supply input.
As Fig. 6 B label D indicating panel h type engine h effective circular diameter that does work, suppose that the diameter D of dish-type circumference is set to 200M, then can be made into space gun, if effectively circle footpath perimeter L is:
L＝π×D＝3.1415×200＝628.3M
If engine speed is n=25 revolutions per second, so the theoretical value of the effective peripheral velocity V of reflector can obtain into:
V=628.3 * 25 revolutions per second
＝15707.5M
=15.7 kilometer per seconds
From above-mentioned three embodiment as can be seen, this wave mode winding can be made into high-power, big output torque, high-frequency (but variable ratio frequency changer transformation) type synchronous generator; Can be made into super high power, super large output torque, superhigh pressure, ultrahigh rotating speed linear electric motors; Also can be made into super large output torque, super high power, ultrahigh rotating speed linear electric motors or reciprocating type linear electric motors.
Thus, wave mode of the present invention is twined winding, in the manufacturing process of generator, motor, reduced the loaded down with trivial details winding manufacture craft that rolls off the production line, reduce the consumption of copper, reduced cost, and, in synchronous generator and motor, can make rotor with winding separately, reduce the consumptive material of the required silicon steel sheet of rotor core.
What need statement is that foregoing invention content and embodiment are intended to prove the practical application of technical scheme provided by the present invention, should not be construed as the qualification to protection range of the present invention.Those skilled in the art are in spirit of the present invention and principle, when doing various modifications, being equal to and replacing or improve.Protection scope of the present invention is as the criterion with appended claims.
Claims (6)
1. the coil windings winding method of a rotor, it is characterized in that, comprise: the effective edge of the effective edge of described rotor coil winding and adjacent same coil windings is by the winding of turning back of the fillet of described coil windings, and the distance between the sideline of the sideline of described rotor coil winding effective edge and adjacent same coil windings effective edge is a pitch; Described coil windings is multiturn number, multiply type winding; Described motor rotor core comprises that a plurality of coils embed groove, and each coil windings evenly embeds at adjacent several coils and embeds in the groove.
2. according to the coil windings winding method of the described rotor of claim 1, it is characterized in that described coil windings is made by the sloping film alloy of height insulated conductor.
3. the coil windings winding method of a rotor, it is characterized in that, described rotor coil winding comprises the sub-coil winding of three groups of same sizes, every component coil windings adopts the described coil windings winding method of claim 1 to carry out coiling, and the effective edge that three component coil windings are comprised separately is distributed in the pitch successively.
4. according to the coil windings winding method of the described rotor of claim 3, it is characterized in that described coil windings is multiturn number, multiply type winding.
5. according to the coil windings winding method of the described rotor of claim 4, it is characterized in that described motor rotor core comprises that a plurality of coils embed groove, each coil windings evenly embeds at adjacent several coils and embeds in the groove.
6. according to the coil windings winding method of the described rotor of claim 3, it is characterized in that described coil windings is made by the sloping film alloy of height insulated conductor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100079592A CN101515741B (en) | 2008-02-21 | 2008-02-21 | Method for winding rotor coil of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100079592A CN101515741B (en) | 2008-02-21 | 2008-02-21 | Method for winding rotor coil of motor |
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| CN101515741A CN101515741A (en) | 2009-08-26 |
| CN101515741B true CN101515741B (en) | 2011-06-29 |
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| CN2008100079592A Expired - Fee Related CN101515741B (en) | 2008-02-21 | 2008-02-21 | Method for winding rotor coil of motor |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014210094A1 (en) * | 2013-06-28 | 2014-12-31 | Borgwarner Inc. | Supercharging apparatus for a combustion engine |
| CN104868615B (en) * | 2015-06-12 | 2018-03-23 | 蔡世勋 | High power density motor and the electronic equipment oscillator and robot using the motor |
| WO2019089076A1 (en) * | 2017-11-06 | 2019-05-09 | Core Innovation, Llc | Structures and methods of manufacture of serpentine stator coils |
| CN110417152A (en) * | 2018-10-24 | 2019-11-05 | 天津市松正电动汽车技术股份有限公司 | A kind of motor stator and motor |
| CN111711397B (en) * | 2020-05-27 | 2021-11-02 | 东南大学 | Predictive current control method for semi-centralized open-winding permanent magnet synchronous motor system |
| CN113285578B (en) * | 2021-06-09 | 2023-06-13 | 东南大学 | Static seal excitation single-loop superconducting magnetic gear motor and application |
| TWI791301B (en) * | 2021-10-08 | 2023-02-01 | 介隆興齒輪股份有限公司 | Structure of a three-phase motor |
| CN115037068B (en) * | 2022-06-15 | 2023-04-07 | 广东汇天航空航天科技有限公司 | Flat wire stator and motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2158593Y (en) * | 1993-07-10 | 1994-03-09 | 山西省临汾新兴压延厂 | Three-phase asynchronous motor |
| CN2737051Y (en) * | 2004-10-26 | 2005-10-26 | 泰豪科技股份有限公司 | Quadrature sine single layer winding |
| CN1925282A (en) * | 2005-08-31 | 2007-03-07 | 江门市洗衣机厂 | Three-phase winding single-phase capacitor operation motor for washing machine |
| EP1109293B1 (en) * | 1999-12-14 | 2007-11-28 | Mitsubishi Denki Kabushiki Kaisha | Alternator and method of manufacture therefor |
-
2008
- 2008-02-21 CN CN2008100079592A patent/CN101515741B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2158593Y (en) * | 1993-07-10 | 1994-03-09 | 山西省临汾新兴压延厂 | Three-phase asynchronous motor |
| EP1109293B1 (en) * | 1999-12-14 | 2007-11-28 | Mitsubishi Denki Kabushiki Kaisha | Alternator and method of manufacture therefor |
| CN2737051Y (en) * | 2004-10-26 | 2005-10-26 | 泰豪科技股份有限公司 | Quadrature sine single layer winding |
| CN1925282A (en) * | 2005-08-31 | 2007-03-07 | 江门市洗衣机厂 | Three-phase winding single-phase capacitor operation motor for washing machine |
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| CN101515741A (en) | 2009-08-26 |
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