CN100361373C - Double salient pole mixed excitation motor - Google Patents

Double salient pole mixed excitation motor Download PDF

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Publication number
CN100361373C
CN100361373C CNB2003101063461A CN200310106346A CN100361373C CN 100361373 C CN100361373 C CN 100361373C CN B2003101063461 A CNB2003101063461 A CN B2003101063461A CN 200310106346 A CN200310106346 A CN 200310106346A CN 100361373 C CN100361373 C CN 100361373C
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China
Prior art keywords
excitation
motor
stator
electric
winding
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CNB2003101063461A
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Chinese (zh)
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CN1545189A (en
Inventor
陈志辉
严仰光
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南京航空航天大学
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Priority to CNB2003101063461A priority Critical patent/CN100361373C/en
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Abstract

The present relates to a double salient pole mixed excitation motor which is composed of a permanent magnetism double salient pole motor and an electric excitation double salient pole motor, wherein the two motors have the same stator tooth number and the same rotor tooth number; the stator armature windings (5) and (1) of the two motors are connected in series; an excitation winding (2) is also arranged on a stator of the electric excitation double salient pole motor. Compared with the prior art, the present invention has the advantages of no winding of rotors, simple structure, running with a high rotary speed, high running efficiency, high electric excitation efficiency and energy saving.

Description

Double-convex pole hybrid excitation motor
Technical field
The present invention relates to a kind of double-convex pole hybrid excitation motor.
Background technology
The Ba Lagunuofu of Moscow aeronautical engineering institute professor proposed the structure of magnetic potential mixed excitation synchronous generator in parallel in 1988, stator is identical with common synchronous machine, and rotor is divided into two parts, and a part is a permanent magnet excitation, and another part is electric excitation.This motor characteristic feature: electric excitation division is divided into claw-pole structure, and additional air gap is many, axial magnetic circuit, and leakage field is big, and electric excitation function is restricted.
Japan doctor T.Mizuno etc. has proposed axial/radial magnetic circuit mixed excitation synchronous generator.The stator armature winding of this motor is common three-phase symmetric winding, and stator core is divided into two sections by stator ring DC excitation winding, and this two iron legs heart mechanically with on the magnetic is connected by its outer back of the body yoke (casing that is used for axial magnetic conduction); Rotor is separated into two parts also: N is extreme and S is extreme, and every interpole that is extremely formed by same polarity permanent-magnet pole and iron core is staggered, and the N at two ends, S permanent-magnet pole and interpole also are staggered.One solid flux sleeve letter (rotor back of the body yoke) is arranged between rotor core and rotating shaft, be used for the axial magnetic conduction of rotor.This motor characteristic feature: additional air gap is many, but is fixing air gap; Have the axial/radial magnetic circuit, electric machine structure optimization is tied.
Professor Lipo of Wisconsin-Madison university waits and has proposed a kind of axial magnetic field consequent pole mixed excitation electric machine structure.It is made of the annular stator core (wherein being embedded with the polyphase armature winding) of two flutings, two disk rotors, a DC excitation winding.At the rotor surface interpole that permanent-magnet pole and iron core form that is being staggered.This motor adds that the stator and rotor iron core all is divided into two sections owing to adopted interpole, and additional air gap is many, and power density and stock utilization are difficult to improve.
Also have a kind of mixed excitation biconvex pole motor T, it is to develop to come out on the basis of doubly salient permanent magnet motor, has kept whole advantages of doubly salient permanent magnet motor.This motor can be regulated air-gap field by the direction and the size of control exciting current.But electric energized circuit passes through permanent magnet, and electric excitation efficiency is low.
The old clear spring of Hong Kong University, professor Jiang Jianzhong of Shanghai Polytechnic Univ etc. have proposed a kind of Lundell hybrid exciting synchronous motor.The external stator of this motor and the stator of common electric machine are similar, are embedded with heterogeneous symmetric winding in the groove, and rotor adopts claw-pole structure, places permanent magnet between two adjacent pawl utmost points, is placed with annular DC excitation winding on internal stator.Because the DC excitation winding places in the formed zone, inside and outside unit by the pawl utmost point, space availability ratio height, compact conformation.But owing to there is axial magnetic circuit, electric excitation efficiency is low.
Summary of the invention
The objective of the invention is at above-mentioned the deficiencies in the prior art, provide a kind of rotor not have winding, simple in structure, can run on high rotating speed, high operational efficiency, electric excitation efficiency height, energy-conservation double-convex pole hybrid excitation motor.
A kind of double-convex pole hybrid excitation motor, it is characterized in that: this motor comprises a doubly salient permanent magnet motor and an electric excitation biconvex electrode electric machine, said two motors like this are set up in parallel in casing in the mode of same rotating shaft, the stator of said two motors has the identical stator number of teeth, the rotor of said two motors has the identical rotor number of teeth, the stator of said doubly salient permanent magnet motor is provided with the excitation permanent magnet, the stator of said electric excitation biconvex electrode electric machine is provided with excitation winding, and the stator armature winding of said doubly salient permanent magnet motor is connected with the stator armature windings in series of said electric excitation biconvex electrode electric machine.
Double-convex pole hybrid excitation motor of the present invention compared with prior art has following characteristics:
(1), can adjust the ratio of electric excitation and permanent magnetism part core length according to the application scenario.Be convenient to realize the optimal design of electric machine structure, reach best energy-saving effect.
(2) exciting current can two-wayly be controlled, and can adapt to wide speed of service requirement.
(3) compare with existing mixed excitation electric machine, do not have axial magnetic circuit and additional air gap, electric excitation efficiency height.
(4) do not have coil and permanent magnet on the rotor, can be used for high speed situation.
Description of drawings
Fig. 1 is the double-convex pole hybrid excitation motor structural representation, and wherein figure (a) is the overall structure schematic diagram, and figure (b) is the doubly salient permanent magnet motor structural representation of 6/4 pole hybrid excitation motor, and figure (c) is the electric excitation biconvex electrode electric machine structural representation.
Number in the figure title: 1, armature winding; 2, excitation winding; 3, permanent magnet; 4, casing; 5, armature winding; 6, rotating shaft; 7, rotor.
Embodiment
As shown in Figure 1, the concrete composition of double-convex pole hybrid excitation motor of the present invention is: what corotation axle 6 was housed in casing 4 has the stator number of teeth identical doubly salient permanent magnet motor and an electric excitation biconvex electrode electric machine identical with the rotor number of teeth, the doubly salient permanent magnet motor stator armature winding 5 on the left side is connected in series with the right electric excitation biconvex electrode electric machine stator armature winding 1 among the figure, also be provided with excitation winding 2 on the electric excitation biconvex electrode electric machine stator, do not have winding on the rotor 7.
The operation principle of double-convex pole hybrid excitation motor
Double-convex pole hybrid excitation motor both can be used as generator, also can be used as motor.
The double-salient-pole mixed excitation generator operation principle
Double salient-pole electric machine has electromotive force expression formula: e=C eφ n (1)
For double-salient-pole mixed excitation generator, its air-gap field is produced jointly by electric excitation air-gap field and permanent magnetism air-gap field.
When the rotating speed of double-salient-pole mixed excitation generator is lower, and load only relies on the permanent magnetism part when big, and the electromotive force of generator can not be kept certain output voltage with less.At this moment, on the excitation winding of electric excitation part, add a field power supply, make electricity excitation magnetic field play the effect that strengthens air-gap field.The φ that is equivalent in the formula (1) is increased, and has improved the electromotive force of generator, thereby guarantees that output voltage meets load request.
Higher when the rotating speed of double-salient-pole mixed excitation generator, and load hour, only has permanent magnetism partly to work, and the electromotive force of generator is with excessive.At this moment, the sense of current of electric excitation winding can be reverse, makes electricity excitation magnetic field play the effect that weakens air-gap field, and the φ that is equivalent in the formula (1) is reduced, and has reduced the electromotive force of generator, thereby guarantees certain output voltage.
Double salient-pole mixed excitation motor operation principle
The electromagnetic torque expression formula of biconvex pole motor is:
T e=C Tφ·I (2)
In the motor during low cruise, for the starting torque that makes motor reaches maximum, except power supply provided maximum armature supply, electric excitation winding also will pass to electric current, and the effect that strengthens air-gap field is played in the magnetic field that exciting current is produced.
After motor speed was increased to certain numerical value, if keep same excitation field, because the influence (seeing formula (1)) of back-emf, armature supply can descend by armature supply gradually, and the input electric power of motor can reduce.At this moment, must weaken excitation field, it is constant just to keep armature supply, so that rotating speed of motor can reach very high numerical value.For the double salient-pole mixed excitation motor, at first can reduce exciting current (until 0) gradually and satisfy the requirement that weakens excitation field; If rotating speed further raises, the electric current in the electric excitation winding can be reverse, thereby excitation field is further reduced, and realizes the speed regulating section of electronic machine width.
The advantage of double-convex pole hybrid excitation motor
(1) rotor is simple in structure, does not have winding on the rotor, can move in high rotating speed.
(2) ratio that accounts for of permanent magnet part iron core length is big, can reduce excitation power, realizes high-efficiency operation. Both ratio differences, motor excitation adjustable range difference.
(3) compare with conventional permanent magnetism motor, because electric excitation electric current can just oppositely be regulated, generator operation can be failed Go out constant voltage; The motor operation can reach very wide permanent power scope. And the weak magnetic of electric Exciting Windings for Transverse Differential Protection needs The more conventional permanent magnetism motor of electrical power borrow the armature supply power that weak magnetic consumes little, be conducive to saves energy.

Claims (1)

1. double-convex pole hybrid excitation motor, it is characterized in that: this motor comprises a doubly salient permanent magnet motor and an electric excitation biconvex electrode electric machine, described two such motors are set up in parallel in casing in the mode with rotating shaft, the stator of said two motors has the identical stator number of teeth, the rotor of said two motors has the identical rotor number of teeth, the stator of said doubly salient permanent magnet motor is provided with the excitation permanent magnet, the stator of said electric excitation biconvex electrode electric machine is provided with excitation winding, and the stator armature winding of said doubly salient permanent magnet motor is connected with the stator armature windings in series of said electric excitation biconvex electrode electric machine.
CNB2003101063461A 2003-11-19 2003-11-19 Double salient pole mixed excitation motor CN100361373C (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CNB2003101063461A CN100361373C (en) 2003-11-19 2003-11-19 Double salient pole mixed excitation motor

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CN100361373C true CN100361373C (en) 2008-01-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102005876A (en) * 2010-11-08 2011-04-06 华北电力大学 Paratactic structure hybrid excitation synchronous machine (HESM) and alternating current excitation control system thereof

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Publication number Priority date Publication date Assignee Title
CN1299413C (en) * 2005-01-07 2007-02-07 南京航空航天大学 Halbach double-salient pole electrical motor
CN100386954C (en) * 2005-01-19 2008-05-07 南京航空航天大学 Low torque ripple double salient pole motor
CN100386953C (en) * 2005-01-19 2008-05-07 南京航空航天大学 Mixed excitation bisalient-pole permanent-magnet synchronous machine
CN100438280C (en) * 2006-08-23 2008-11-26 南京航空航天大学 Tangential magnetic steel double-convex pole hybrid excitation motor
CN100424967C (en) * 2006-08-23 2008-10-08 南京航空航天大学 Radial magnet steel double salient-pole mixed excitation electric machine
CN101710773B (en) * 2009-12-08 2016-02-03 河南省电力公司南阳供电公司 Alternating current reluctance synchronous motor
CN102005875B (en) * 2010-11-08 2013-06-05 华北电力大学 Brushless parallel-structure hybrid excitation synchronous generator without additional air gap
WO2012062018A1 (en) * 2010-11-08 2012-05-18 华北电力大学 Hybrid excitation synchronous generator with coordinate structure and ac excitation control system thereof
CN102005834B (en) * 2010-11-26 2012-10-31 南京航空航天大学 Hybrid excitation doubly salient motor adopting axial excitation
CN102035270B (en) * 2010-12-17 2012-11-14 南京航空航天大学 Axial excitation double salient pole motors
CN102832767B (en) * 2012-09-07 2014-08-20 南京航空航天大学 Parallel hybrid excitation brushless direct-current fault-tolerant motor
CN102843008A (en) * 2012-09-07 2012-12-26 南京航空航天大学 Parallel type mixed excitation alternating-current generator
CN102832768B (en) * 2012-09-07 2014-08-20 南京航空航天大学 Parallel hybrid excitation brushless direct-current motor
CN107896038B (en) * 2017-10-31 2020-07-28 南京航空航天大学 Double-winding hybrid excitation brushless direct current integrated power generation system and control method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1063782A (en) * 1991-01-31 1992-08-19 株式会社精工技研 Be set up in parallel the reluctance machine of a plurality of stators
CN1099155C (en) * 1999-06-09 2003-01-15 南京航空航天大学 Brushless DC electric generator with dual salient poles

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1063782A (en) * 1991-01-31 1992-08-19 株式会社精工技研 Be set up in parallel the reluctance machine of a plurality of stators
CN1099155C (en) * 1999-06-09 2003-01-15 南京航空航天大学 Brushless DC electric generator with dual salient poles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102005876A (en) * 2010-11-08 2011-04-06 华北电力大学 Paratactic structure hybrid excitation synchronous machine (HESM) and alternating current excitation control system thereof
CN102005876B (en) * 2010-11-08 2013-03-06 华北电力大学 Paratactic structure hybrid excitation synchronous machine (HESM) and alternating current excitation control system thereof

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