CN102969816A - Automobile three-phase short-chord winding permanent alternating current (AC) generator - Google Patents

Automobile three-phase short-chord winding permanent alternating current (AC) generator Download PDF

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Publication number
CN102969816A
CN102969816A CN2012105402026A CN201210540202A CN102969816A CN 102969816 A CN102969816 A CN 102969816A CN 2012105402026 A CN2012105402026 A CN 2012105402026A CN 201210540202 A CN201210540202 A CN 201210540202A CN 102969816 A CN102969816 A CN 102969816A
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CN
China
Prior art keywords
winding
generator
phase
pole
rotor
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Pending
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CN2012105402026A
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Chinese (zh)
Inventor
史立伟
张学义
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Shandong University of Technology
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Shandong University of Technology
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Priority to CN2012105402026A priority Critical patent/CN102969816A/en
Publication of CN102969816A publication Critical patent/CN102969816A/en
Pending legal-status Critical Current

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Abstract

The invention provides an automobile three-phase short-chord winding permanent alternating current (AC) generator. The automobile three-phase short-chord winding permanent AC generator comprises a rotor and a stator, wherein the rotor consists of a rotor yoke, an N-pole magnetic pole, an S-pole magnetic pole, an auxiliary pole and a shaft, the automobile three-phase short-chord winding permanent AC generator is characterized in that N poles and S poles of a permanent magnetic rotor with 20 magnetic poles are adhered on the rotor yoke at intervals, and the auxiliary pole is also adhered on the rotor yoke close to one side of the motor rotation direction of the magnetic poles. An automotive alternator has large current and large armature reaction, so that strong armature reaction magnetic field can enter an air gap through the auxiliary pole, the air gap flux of a motor can be greatly increased, and the output power of the generator can be improved. Three-phase double-layer stator windings A, B and C are arranged in 24 slots of the stator, each phase of windings has 8 coils with equal turns, the 8 coils are divided into 4 coil groups for winding, a winding pitch is 1, the end of the winding is shorter through the short pitch, thereby being capable of saving a great amount of coppers, reducing heat of the generator and improving the efficiency of the generator; in addition, only one phase winding is arranged at the outer side of teeth of each stator of the generator, the windings are not overlapped, the slot utilization ratio is high and the slot fullness rate is high.

Description

A kind of automobile three-phase short distance winding permanent magnet alternating current generator
Technical field
The present invention relates to the automobile three-phase short distance winding permanent magnet alternating current generator that a kind of low copper material consumes, belong to the electric motor of automobile technical field.
Background technology
At present, be widely used in automobile current generator both at home and abroad and mostly be the Lundell threephase alternator, each winding of this generator is across 3 grooves, and namely winding pitch is 3, and long winding pitch is so that the generator windings end is longer.Because the resistance of winding is directly proportional with the length of winding, therefore, the long winding in end has not only been wasted a large amount of copper materials, and so that the generator heating is serious.The invention discloses a kind of new-type short distance winding, reduce the weight of generator copper material, reduce the generator cost, improve generator efficiency.
In prior art, permanent-magnet brushless DC electric machine is widely used in all trades and professions.For example, the Chinese invention patent of authorizing: brushless three-phase synchronous generator for ship fractional slot winding ZL200910115721.6, a kind of brushless three-phase synchronous generator for ship fractional slot winding is disclosed, it is characterized in that number of stator slots 108 grooves, number of poles 8 utmost points, the number of phases 3 phases, the parallel branch number is 4, and coil span is 11.The Chinese invention patent of authorizing: the fractional slot winding ZL200510093634.7 of low speed large torque moment permanent-magnet brushless motor, having related to number of magnetic poles P and iron core slot counts Z and number of phases M and distribution number Q and satisfies following condition permanent magnetic brushless: 1) when distribution number Q is odd number, iron core slot is counted Z=Q * M * K, number of magnetic poles P=Z ± K; Wherein K is natural number; 2) when distribution number Q is even number, iron core slot is counted Z=Q * M * K, number of magnetic poles P=Z ± 2K; Wherein K is natural number.The Chinese invention patent of bulletin: low-speed direct-drive permanent magnet synchronous submersible motor, number of patent application: 201010614682.7, drive 18 stator slots on the stator, the winding of described stator is multipole for few groove, fractional-slot and double-deck short distance winding; Described rotor progression is 14 utmost points.More than invention all is the innovation at the brushless, permanently excited direct current motor concrete structure of a certain extraordinary applications.And when permanent-magnet brushless DC electric machine is operated in the generator state, necessarily require three-phase strictly symmetrical, and can not there be radial imbalance force.Therefore, the fractional slot winding major part announced of the Chinese invention patent of mandate: ZL200510093634.7 is not suitable as generator and uses.The present invention has proposed 24 stator slots and 20 4 coil groups fractional-slot short distance winding automobile magneto alternator structures that rotor pole forms on the basis of analyzing teeth groove matching theory, the symmetrical principle of three phase windings and radial imbalance force mechanism of production.
Summary of the invention
The purpose of this invention is to provide the automobile three-phase short distance winding permanent magnet alternating current generator that a kind of low copper material consumes.This motor reduces the weight of generator copper material, reduces the generator cost, improves generator efficiency.Specifically: comprise the rotor and the stator that are formed by rotor yoke, magnetic pole and axle, it is characterized in that: number of magnetic poles is that 10 N utmost points of 20 p-m rotor and 10 S interpolars are every arrangement, magnetic pole is bonded on the rotor yoke outer surface, pole material is neodymium iron boron or ferrite permanent-magnet materials, pole embrace is 0.6~0.8, also be bonded with interpole on the rotor yoke outer surface of motor direction of rotation one side of adjacent magnetic pole, the interpole arc length is 1/8~1/5 of magnetic pole arc length, the interpole material is magnetic conductive soft iron, and rotor yoke is fixed on the armature spindle; The double-deck stator winding of A, B, C three-phase is arranged in 24 grooves of stator, and every phase winding such as has to be divided into 4 coil groups coilings at 8 coils of the number of turn, and winding pitch is 1, and the coil of A phase winding is respectively , , , , , , , , the coil of B phase winding is respectively , , , , , , , , the coil of C phase winding is respectively , , , , , , , , three phase winding Y-connections.
Beneficial effect of the present invention is as follows: common automobile current generator voltage generally only has 14V, power 70A, so the stator winding current density of automobile current generator is high, heating is serious.Each winding of three-phase short distance winding that adopts of the present invention is only across 1 groove, and namely winding pitch is 1, and short winding pitch is so that the generator windings end is shorter.Because the resistance of winding is directly proportional with the length of winding, therefore, the short winding in end can be saved a large amount of copper materials, and can reduce the generator heating, improves generator efficiency.In addition, each stator tooth outside of generator of the present invention only has a phase winding, and the groove utilance is high, and copper factor is high.Because the teeth groove that adopts coupling better, three phase windings are symmetrical, and this motor do not have radial imbalance force, and cogging torque is also less.
Description of drawings
Fig. 1 is the developed winding diagram of the embodiment of the invention.
Fig. 2 is the generator profile of the embodiment of the invention.
Fig. 3 is the generator phase voltage waveform of the embodiment of the invention
Embodiment
Three-phase short distance winding permanent magnet alternator winding expanded view as shown in Figure 1, number of magnetic poles is that 10 N utmost points of 20 p-m rotor and 10 S interpolars are every arrangement, magnetic pole is bonded on the rotor yoke, rotor yoke is fixed on the armature spindle, A, B, the double-deck stator winding of C three-phase are arranged in 24 grooves of stator, 8 coils of the numbers of turn such as every phase winding has are divided into 4 coil groups coilings, and winding pitch is 1, and the coil of A phase winding is respectively , , , , , , , , the coil of B phase winding is respectively , , , , , , , , the coil of C phase winding is respectively , , , , , , , , three phase winding Y-connections.
The generator profile of the embodiment of the invention as shown in Figure 2, generator comprises by rotor yoke 6, N utmost point magnetic pole 1, S utmost point magnetic pole 2, interpole 4 and the rotor of axle 3 compositions and the stator of stator core 6 and stator winding 7 compositions, number of magnetic poles is that 10 N utmost points of 20 p-m rotor and 10 S interpolars are every arrangement, magnetic pole is bonded on the rotor yoke, pole material is neodymium iron boron or ferrite permanent-magnet materials, pole embrace is 0.6~0.8, also be bonded with interpole on the rotor yoke of motor direction of rotation one side of adjacent magnetic pole, the interpole arc length is 1/8~1/5 of magnetic pole arc length, the interpole material is magnetic conductive soft iron, and rotor yoke is fixed on the armature spindle.
The generator phase voltage of the embodiment of the invention as shown in Figure 3, waveform has preferably sine, high order harmonic component is little, electric efficiency is high.This is because generator has been taked 24 stator slots and 20 4 coil groups fractional-slot short distance winding automobile magneto alternator structures that rotor pole forms, pole embrace is 0.6~0.8, the teeth groove coupling better, three phase windings are symmetrical, and this motor do not have radial imbalance force, and cogging torque is also less.
Its operation principle is:When generator amature during with the rotation of the rotating speed of per minute n r/min, number of pole-pairs is that 10 rotor produces the alternating magnetic field that frequency is in air-gap field, the three-phase alternating current induced voltage that the exportable frequency of threephase stator winding is, this three-phase alternating voltage charges a battery after regulator rectifier circuit rectification and voltage stabilizing, perhaps gives the automobile electrical power devices.Because the automobile current generator electric current is large, armature reaction is large, and therefore strong armature reacting field can enter air gap through interpole, has greatly increased the air-gap flux of motor, has improved the power output of generator.

Claims (1)

1. comprise the rotor and the stator that are formed by rotor yoke, N utmost point magnetic pole, S utmost point magnetic pole, interpole and axle, it is characterized in that: number of magnetic poles is that 10 N utmost points of 20 p-m rotor and 10 S interpolars are every arrangement, magnetic pole is bonded on the rotor yoke outer surface, pole material is neodymium iron boron or ferrite permanent-magnet materials, pole embrace is 0.6~0.8, also be bonded with interpole on the rotor yoke outer surface of motor direction of rotation one side of adjacent magnetic pole, the interpole arc length is 1/8~1/5 of magnetic pole arc length, the interpole material is magnetic conductive soft iron, and rotor yoke is fixed on the armature spindle; The double-deck stator winding of A, B, C three-phase is arranged in 24 grooves of stator, and every phase winding such as has to be divided into 4 coil groups coilings at 8 coils of the number of turn, and winding pitch is 1, and the coil of A phase winding is respectively , , , , , , , , the coil of B phase winding is respectively , , , , , , , , the coil of C phase winding is respectively , , , , , , , , three phase winding Y-connections.
CN2012105402026A 2012-12-14 2012-12-14 Automobile three-phase short-chord winding permanent alternating current (AC) generator Pending CN102969816A (en)

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Application Number Priority Date Filing Date Title
CN2012105402026A CN102969816A (en) 2012-12-14 2012-12-14 Automobile three-phase short-chord winding permanent alternating current (AC) generator

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CN102969816A true CN102969816A (en) 2013-03-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113054778A (en) * 2019-12-27 2021-06-29 黑龙江省国特尔机电科技有限责任公司 Uniform magnetic equidirectional high-power-generation energy-saving generator
CN113054776A (en) * 2019-12-27 2021-06-29 黑龙江省国特尔机电科技有限责任公司 Uniform magnetic equidirectional high-power-density energy-saving motor
CN113054811A (en) * 2019-12-27 2021-06-29 黑龙江省国特尔机电科技有限责任公司 Generator stator winding method
CN113890215A (en) * 2021-09-14 2022-01-04 武汉理工大学 High-speed amorphous alloy permanent magnet motor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4351102A (en) * 1977-11-09 1982-09-28 Robert Bosch Gmbh Method for winding the stator in a three phase AC machine
CN1106584A (en) * 1994-10-31 1995-08-09 白侠斌 Generator having new structure
JPH1189144A (en) * 1997-09-09 1999-03-30 Hitachi Ltd Permanent magnet rotary electric motor and electric vehicle using it
CN101626186A (en) * 2009-08-25 2010-01-13 哈尔滨工业大学 Permanent-magnet switch flux-linkage generator of three-dimensional magnetic structure
CN101895180A (en) * 2010-07-06 2010-11-24 毕磊 Three-phase alternating current permanent magnet motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4351102A (en) * 1977-11-09 1982-09-28 Robert Bosch Gmbh Method for winding the stator in a three phase AC machine
CN1106584A (en) * 1994-10-31 1995-08-09 白侠斌 Generator having new structure
JPH1189144A (en) * 1997-09-09 1999-03-30 Hitachi Ltd Permanent magnet rotary electric motor and electric vehicle using it
CN101626186A (en) * 2009-08-25 2010-01-13 哈尔滨工业大学 Permanent-magnet switch flux-linkage generator of three-dimensional magnetic structure
CN101895180A (en) * 2010-07-06 2010-11-24 毕磊 Three-phase alternating current permanent magnet motor

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Title
唐任远等: "《现代永磁电机理论与设计》", 31 December 1997, 机械工业出版社 *
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胡虔生等: "《电机学》", 31 July 2009, 中国电力出版社 *
赵朝会等: "《混合励磁电机的结构及原理》", 31 March 2010, 科学出版社 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113054778A (en) * 2019-12-27 2021-06-29 黑龙江省国特尔机电科技有限责任公司 Uniform magnetic equidirectional high-power-generation energy-saving generator
CN113054776A (en) * 2019-12-27 2021-06-29 黑龙江省国特尔机电科技有限责任公司 Uniform magnetic equidirectional high-power-density energy-saving motor
CN113054811A (en) * 2019-12-27 2021-06-29 黑龙江省国特尔机电科技有限责任公司 Generator stator winding method
CN113890215A (en) * 2021-09-14 2022-01-04 武汉理工大学 High-speed amorphous alloy permanent magnet motor

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Application publication date: 20130313