CN101610007A - 3-phase 12/11-pole permanent magnet switch flux linkage motor and its short-circuit current suppression method - Google Patents
3-phase 12/11-pole permanent magnet switch flux linkage motor and its short-circuit current suppression method Download PDFInfo
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- CN101610007A CN101610007A CNA2009101813963A CN200910181396A CN101610007A CN 101610007 A CN101610007 A CN 101610007A CN A2009101813963 A CNA2009101813963 A CN A2009101813963A CN 200910181396 A CN200910181396 A CN 200910181396A CN 101610007 A CN101610007 A CN 101610007A
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- 230000004907 flux Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000001629 suppression Effects 0.000 title abstract 2
- 238000004804 winding Methods 0.000 claims abstract description 59
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 230000005291 magnetic effect Effects 0.000 claims abstract description 19
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 239000004411 aluminium Substances 0.000 claims description 8
- 241000239290 Araneae Species 0.000 claims description 5
- 230000002401 inhibitory effect Effects 0.000 claims description 5
- 230000005389 magnetism Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 7
- 210000000515 tooth Anatomy 0.000 description 7
- 230000005347 demagnetization Effects 0.000 description 6
- 238000002955 isolation Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
本发明公开了一种3相12/11极永磁开关磁链电机及其短路电流抑制方法，属永磁容错电机。包括凸极定子、电枢绕组和凸极转子，定子凸极为U型定子铁块，每两个U型定子铁块之间的空隙依次间隔嵌入条形永磁体和条形铝块，上述条形永磁体和条形铝块长度相等为U型定子铁块的U型臂长，与永磁体相连的两个U型臂上缠绕定子绕组即第一线圈至第六线圈。本发明所述方法采用所述3相12/11极永磁开关磁链电机减少条形永磁体数量、降低永磁体矫顽力以及增加电机绕组匝数，使得短路电流小于额定电流。本发明在维持永磁开关磁链电机功率密度高、固有可靠性高的基础上，降低各相之间的互感减小各相之间的磁耦合，提高绕组电感以抑制短路电流，从而提高电机的容错能力。
The invention discloses a 3-phase 12/11-pole permanent magnet switch flux linkage motor and a short-circuit current suppression method thereof, belonging to a permanent magnet fault-tolerant motor. It includes a salient pole stator, an armature winding and a salient pole rotor. The salient pole of the stator is a U-shaped stator iron block. The gap between every two U-shaped stator iron blocks is embedded with bar-shaped permanent magnets and bar-shaped aluminum blocks in sequence. The above-mentioned bar-shaped The length of the permanent magnet and the strip-shaped aluminum block is equal to the length of the U-shaped arm of the U-shaped stator iron block, and the stator windings, namely the first coil to the sixth coil, are wound on the two U-shaped arms connected to the permanent magnet. The method of the present invention uses the 3-phase 12/11 pole permanent magnet switch flux linkage motor to reduce the number of strip permanent magnets, reduce the coercive force of the permanent magnets and increase the number of turns of the motor winding, so that the short-circuit current is less than the rated current. On the basis of maintaining the high power density and high inherent reliability of the permanent magnet switch flux linkage motor, the present invention reduces the mutual inductance between the phases, reduces the magnetic coupling between the phases, increases the winding inductance to suppress the short-circuit current, and thus improves the performance of the motor. fault tolerance.
Description
Technical field
The present invention relates to a kind of fault-tolerant motor, relate in particular to a kind of 3 phase 12/11 pole permanent-magnetic-switch flux linkage motor and method for inhibiting short circuit current thereof, belong to the fault tolerant permanent magnet machine field.
Background technology
As the core component of near space Power System of Flight Vehicle, that starting/generator should have is simple in structure, reliable operation, efficient height, advantage such as safe in utilization.Type from starter-generator, there is not permanent magnet on the rotor, no winding, have simple in structure, firm, cost is low, reliable operation, control is flexible, operational efficiency is high, fault-tolerant ability is strong, have the adaptive switched reluctance machines of High Temperature And Velocity and have competitiveness, become the main research object of the U.S. from last century since the late nineteen eighties always in this field in this field.U.S. Kentucky university and GE, Sundstrand company have carried out a large amount of research and experiments to switch magnetic-resistance starting generator, developed the switch magnetic-resistance starting generator of 30kW, 250kW, 375kW, 500kW in succession, rotating speed is up to 48000 rev/mins.Domestic Nanjing Aero-Space University, Northwestern Polytechnical University have also developed low power principle prototype (being no more than 7.5kW) in succession at aviation aircraft.
Yet switched reluctance machines belongs to self-magnetized motor, and be half period work, the power density of motor and efficient await further raising, and its vibration and noise also are its intrinsic defectives, therefore the permanent-magnet type starter-generator of studying a kind of high efficiency, high power density, high fault-tolerant ability replaces the inevitable requirement that switch magnetic-resistance starting generator also is scientific and technological progress, also is the inexorable trend of this field development.
Magneto has suitable advantage aspect efficient, power density, the torque density, but its permanent magnet places on the rotor, high-power/as to exist during the operation of wide rotating speed such as the rotor protection and heat radiation, permanent magnet demagnetization, magnetic field are difficult to regulate and problem such as demagnetization difficulty during fault, cause classical at present permagnetic synchronous motor, brshless DC motor in starting/generating system is used, to be restricted.
Path has been opened up in the research that appears as novel starter-generator of stator permanent-magnet magneto.The stator permanent-magnet magneto mainly comprises doubly salient permanent magnet motor, flux switching motor, the anti-phase magneto of magnetic flux at present.This is wherein the highest with flux switching motor torque density and power density again.The summary of benefits of flux switching motor as: (1) permanent magnet places stator, be easy to the cooling, be not subjected to centrifugal force.(2) distinctive " poly-magnetic " effect makes motor also can obtain higher air gap flux density when adopting the lower permanent magnet of coercive force.(3) rotor structure is simple, is easy to high-speed cruising.(4) influenced by armature field little for permanent magnet, and when being short-circuited fault, the probability of permanent magnet generation irreversible demagnetization is minimum, and weak magnetic energy power is better than the rotor permanent-magnetic electric machine.(5) sine degree of back electromotive force is higher.(6) motor adopts centralized winding, and is simple in structure, and the end copper loss is little, the electric efficiency height.Above-mentioned superior function is that flux switching motor has been created condition in the application in starting-generating field.
From the angle of fault freedom, when switched reluctance machines one phase winding broke down, motor was with having certain fault-tolerance.But it torque ripple inevitably occurs, reduces its fault freedom.The Z.Q.Zhu professor of the Atkinson.D.J of Newscastle university, B.C.Mecrow professor and Shefield university, professor D.Howe then carry out the research of fault tolerant permanent magnet machine from the height of system's (being the system that motor and control combine together), and this motor at first is applied to aviation electrical actuation system.
The structure of fault tolerant permanent magnet machine is similar to general permanent magnetic brushless, but it is not a three phase electric machine, but polyphase machine, the notch number and the number of pole-pairs of stator are close, armature winding all is to adopt the mode of individual layer every the tooth coiling simultaneously, therefore fault tolerant permanent magnet machine also has the following advantages except the characteristics with general magneto: have the ability of heat isolation, magnetic isolation, electrical isolation between each phase winding, every phase winding has the short circuit current of inhibition ability.Yet at present at the fault-tolerant motor of rotor magneto still well do not solve such as rotor protection and heat radiation, permanent magnet demagnetization, magnetic field is regulated and problem such as demagnetization during fault.So, carried out apparent especially necessity of research of fault tolerant permanent magnet flux switching motor.
If copy fault tolerant permanent magnet machine, between per two stator tooths of permanent-magnetic-switch flux linkage motor, short circuit tooth (the short circuit tooth is formed by silicon steel plate stacking) is set, because the permanent-magnetic-switch flux linkage motor rotor structure is the biconvex electrode structure, the direct magnetic conductance of stator and rotor changes and changes along with rotor-position, at some rotor angles, mutual inductance is bigger between phase and phase.
Purpose of the present invention be exactly guarantee permanent-magnetic-switch flux linkage motor power density height, torque density height, (permanent magnet places stator to the inherent reliability height, good heat dissipation, be not subjected to centrifugal force) advantage under, propose a kind ofly can suppress short circuit current, the magnetic isolating power is strong, location torque is little permanent-magnetic switching flux linkage fault-tolerant motor.
Summary of the invention
Purpose of the present invention proposes a kind ofly can suppress short circuit current, the magnetic isolating power is strong, location torque is little permanent-magnetic-switch flux linkage motor and method for inhibiting short circuit current thereof.
A kind of 3 phases, 12/11 pole permanent-magnetic-switch flux linkage motor comprises salient pole stator, armature winding and field spider, it is characterized in that:
Stator salient poles is a U type stator iron block, space between per two U type stator iron blocks embeds strip permanent magnet and bar shaped aluminium block successively at interval, above-mentioned strip permanent magnet and bar shaped aluminium block equal in length are the U type brachium of U type stator iron block, twine i.e. first coil to the, six coils of stator winding on two U type arms that link to each other with permanent magnet.
The method for inhibiting short circuit current of described 3 phases, 12/11 pole permanent-magnetic-switch flux linkage motor is characterized in that: adopt described 3 phases, 12/11 pole permanent-magnetic-switch flux linkage motor to reduce strip permanent magnet quantity, reduce permanent magnet coercive force and increase the motor windings number of turn, and feasible
Promptly make winding inductance and rated current product more than or equal to the unloaded permanent magnetism magnetic linkage of winding, improve the ability that motor suppresses short circuit current, in the formula (1), φ represents the unloaded permanent magnet flux of coil, and N represents every circle coil turn, and L represents the inductance of single-turn circular coil, T represents the nominal torque of motor, φ
MaxThe unloaded permanent magnet flux amplitude of representing every phase winding.
With the tradition 3 mutually 12/10 permanent-magnetic-switch flux linkage motor compare, strip permanent magnet quantity reduces by half, and can reduce the amplitude and the frequency of motor location torque; Reduce strip permanent magnet quantity, unloaded permanent magnetism magnetic linkage amplitude reduces, and the torque current ampere-turn increases, and winding inductance and rated current product improve the ability that motor suppresses short circuit current more than or equal to the unloaded permanent magnetism magnetic linkage of winding.
Twine stator winding on two U type arms that link to each other with permanent magnet, utilize the complementary advantage of winding of permanent-magnetic switching flux linkage fault-tolerant motor, improve sine degree of back electromotive force, winding 1 is connected with winding 4 and is constituted the A phase winding, winding 2 is connected with winding 5 and is constituted the B phase winding, winding 3 is connected with winding 6 and is constituted the C phase winding, and the rotor number of teeth is set to 11.
(permanent magnet places stator, is easy to cooling, is not subjected to centrifugal force making full use of permanent-magnetic-switch flux linkage motor inherent reliability height in the present invention; It is little that permanent magnet is influenced by armature field, when being short-circuited fault, the probability of permanent magnet generation irreversible demagnetization is minimum) the basis on, propose aluminum strip isolated 3 12/11 pole permanent-magnetic-switch flux linkage fault-tolerant motor mutually, the motor mutual inductance is little, and the magnetic isolating power is strong, the motor inductance is big, it is strong to suppress the short circuit current ability, and the amplitude and the frequency of motor location torque reduce, and sine degree of back electromotive force is higher.This motor will have wide practical use to the higher field of starting-generating System Fault Tolerance performance near space aircraft, the how electric aircraft of full electricity etc.
Description of drawings
Fig. 1 is a structural section schematic diagram of the present invention.
The number in the figure title: 1, strip permanent magnet, 2, U type stator iron block, 3, field spider, 4, the bar shaped aluminium block, coil 1---coil 6 is the concentrated armature coil of armature winding; Arrow among the figure on the strip permanent magnet is represented excitation direction.
Embodiment
As shown in Figure 1, a kind of 3 phases, 12/11 pole permanent-magnetic-switch flux linkage motor, comprise salient pole stator, armature winding, excitation winding and field spider, wherein: purpose of the present invention proposes a kind ofly can suppress short circuit current, the magnetic isolating power is strong, location torque is little permanent-magnetic switching flux linkage fault-tolerant motor.
A kind of 3 phases, 12/11 pole permanent-magnetic-switch flux linkage motor comprises salient pole stator, armature winding and field spider.
The above-mentioned salient pole stator number of teeth is 12, comprise that promptly the space between 12 U type stator iron blocks, per two the U type stator iron blocks embeds 6 strip permanent magnets and 6 bar shaped aluminium blocks successively by odevity, above-mentioned strip permanent magnet and bar shaped aluminium block equal in length, be U type stator U type brachium, twine stator winding on two U type arms that link to each other with permanent magnet, the high reluctance magnetic path that the bar shaped aluminium block produces plays separated magnetic effect, reduces the mutual inductance between each phase of permanent-magnetic switching flux linkage fault-tolerant motor.
With the tradition 3 mutually 12/10 permanent-magnetic-switch flux linkage motor compare, strip permanent magnet quantity reduces by half, and can reduce the amplitude and the frequency of motor location torque.
When coil 1---arbitrary coil fault that is short-circuited in the coil 6, short circuit current i
fExpression formula is shown in (1):
In the formula (1), φ represents the unloaded permanent magnet flux of coil, and N represents every circle coil turn, and L represents the inductance of single-turn circular coil.Rated current i
LExpression formula is shown in (2):
In the formula (2), T represents the nominal torque of motor, φ
MaxRepresent the unloaded permanent magnet flux amplitude of every phase winding, N represents each coil turn.
Rated current and nominal torque one timing when motor reduce strip permanent magnet quantity and reduce permanent magnet coercive force, then the unloaded permanent magnet flux amplitude φ of the unloaded permanent magnet flux φ of coil and every phase winding
MaxAll reduce, each coil turn of motor increases short circuit current i
fReduce, winding inductance and rated current product improve the ability that motor suppresses short circuit current more than or equal to the unloaded permanent magnetism magnetic linkage of winding.
Twine stator winding on two U type arms that link to each other with permanent magnet, utilize the complementary advantage of winding of permanent-magnetic switching flux linkage fault-tolerant motor, improve sine degree of back electromotive force, winding 1 is connected with winding 4 and is constituted the A phase winding, winding 2 is connected with winding 5 and is constituted the B phase winding, winding 3 is connected with winding 6 and is constituted the C phase winding, and the rotor number of teeth is set to 11.
Claims (3)
1, a kind of 3 phases, 12/11 pole permanent-magnetic-switch flux linkage motor comprises salient pole stator, armature winding and field spider (3), it is characterized in that:
Stator salient poles is a U type stator iron block, space between per two U type stator iron blocks embeds strip permanent magnet and bar shaped aluminium block successively at interval, above-mentioned strip permanent magnet and bar shaped aluminium block equal in length are the U type brachium of U type stator iron block, and twining stator winding on two U type arms that link to each other with permanent magnet is that first coil (1) is to the 6th coil (6).
2,3 phases, 12/11 pole permanent-magnetic-switch flux linkage motor according to claim 1, it is characterized in that: the structure of described 3 phase windings is as follows: first coil (1) is connected with coil the 4th (4) and is constituted the A phase winding, second coil (2) is connected with the 5th coil (5) and is constituted the B phase winding, and tertiary coil (3) is connected with the 6th coil (6) and constituted the C phase winding.
3, a kind of method for inhibiting short circuit current based on claim 1 or 2 described 3 phases, 12/11 pole permanent-magnetic-switch flux linkage motors, it is characterized in that: adopt described 3 phases, 12/11 pole permanent-magnetic-switch flux linkage motor to reduce strip permanent magnet quantity, reduce permanent magnet coercive force and increase the motor windings number of turn, make
Promptly make winding inductance and rated current product more than or equal to the unloaded permanent magnetism magnetic linkage of winding, improve the ability that motor suppresses short circuit current, in the formula (1), φ represents the unloaded permanent magnet flux of coil, and N represents every circle coil turn, and L represents the inductance of single-turn circular coil, T represents the nominal torque of motor, φ
MaxThe unloaded permanent magnet flux amplitude of representing every phase winding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101813963A CN101610007B (en) | 2009-07-15 | 2009-07-15 | 3-phase 12/11 pole permanent-magnetic-switch flux linkage motor and method for inhibiting short circuit current thereof |
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| CN2009101813963A CN101610007B (en) | 2009-07-15 | 2009-07-15 | 3-phase 12/11 pole permanent-magnetic-switch flux linkage motor and method for inhibiting short circuit current thereof |
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| CN101610007A true CN101610007A (en) | 2009-12-23 |
| CN101610007B CN101610007B (en) | 2011-08-10 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789676A (en) * | 2010-03-10 | 2010-07-28 | 江苏大学 | Fault-tolerance permanent magnet linear motor |
| CN101860158A (en) * | 2010-05-18 | 2010-10-13 | 哈尔滨工业大学 | Switched Flux Permanent Magnet Synchronous Motor |
| CN103219809A (en) * | 2013-03-29 | 2013-07-24 | 郜国宣 | Open type multilevel alternating current power generator |
| CN103259464A (en) * | 2013-05-10 | 2013-08-21 | 南京邮电大学 | Switch reluctance motor without bearings |
| GB2518690A (en) * | 2013-09-30 | 2015-04-01 | Jaguar Land Rover Ltd | Electric machine and method of operation thereof |
| CN106549547A (en) * | 2016-11-25 | 2017-03-29 | 南京航空航天大学 | A kind of mixing magnet steel magnetic flux switching memory electrical machine |
| CN107070156A (en) * | 2017-05-08 | 2017-08-18 | 史立伟 | A kind of attached brushless DC motor of electric vehicle |
| CN109302034A (en) * | 2018-10-31 | 2019-02-01 | 山东理工大学 | Motor generators for hybrid vehicles |
| CN109412282A (en) * | 2018-10-31 | 2019-03-01 | 山东理工大学 | A kind of multiphase fault-tolerant magneto |
| US10224767B2 (en) | 2012-11-20 | 2019-03-05 | Jaguar Land Rover Limited | Electric machine and method of operation thereof |
| CN110176846A (en) * | 2019-04-30 | 2019-08-27 | 华中科技大学 | A kind of switch flux-linkage magneto of band connection bridge |
| CN113315269A (en) * | 2021-05-31 | 2021-08-27 | 河北工业大学 | Stator type permanent magnet synchronous motor with flux weakening function |
-
2009
- 2009-07-15 CN CN2009101813963A patent/CN101610007B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789676B (en) * | 2010-03-10 | 2012-06-20 | 江苏大学 | Fault-tolerance permanent magnet linear motor |
| CN101789676A (en) * | 2010-03-10 | 2010-07-28 | 江苏大学 | Fault-tolerance permanent magnet linear motor |
| CN101860158A (en) * | 2010-05-18 | 2010-10-13 | 哈尔滨工业大学 | Switched Flux Permanent Magnet Synchronous Motor |
| US10224767B2 (en) | 2012-11-20 | 2019-03-05 | Jaguar Land Rover Limited | Electric machine and method of operation thereof |
| CN103219809A (en) * | 2013-03-29 | 2013-07-24 | 郜国宣 | Open type multilevel alternating current power generator |
| CN103259464A (en) * | 2013-05-10 | 2013-08-21 | 南京邮电大学 | Switch reluctance motor without bearings |
| GB2518690B (en) * | 2013-09-30 | 2017-06-14 | Jaguar Land Rover Ltd | Electric machine and method of operation thereof |
| GB2518690A (en) * | 2013-09-30 | 2015-04-01 | Jaguar Land Rover Ltd | Electric machine and method of operation thereof |
| CN106549547A (en) * | 2016-11-25 | 2017-03-29 | 南京航空航天大学 | A kind of mixing magnet steel magnetic flux switching memory electrical machine |
| CN106549547B (en) * | 2016-11-25 | 2019-01-29 | 南京航空航天大学 | A kind of mixing magnet steel magnetic flux switching memory electrical machine |
| CN107070156A (en) * | 2017-05-08 | 2017-08-18 | 史立伟 | A kind of attached brushless DC motor of electric vehicle |
| CN109302034A (en) * | 2018-10-31 | 2019-02-01 | 山东理工大学 | Motor generators for hybrid vehicles |
| CN109412282A (en) * | 2018-10-31 | 2019-03-01 | 山东理工大学 | A kind of multiphase fault-tolerant magneto |
| CN109302034B (en) * | 2018-10-31 | 2020-11-03 | 山东理工大学 | Motor generators for hybrid vehicles |
| CN110176846A (en) * | 2019-04-30 | 2019-08-27 | 华中科技大学 | A kind of switch flux-linkage magneto of band connection bridge |
| CN110176846B (en) * | 2019-04-30 | 2020-11-24 | 华中科技大学 | A switched flux linkage permanent magnet motor with connecting bridge |
| CN113315269A (en) * | 2021-05-31 | 2021-08-27 | 河北工业大学 | Stator type permanent magnet synchronous motor with flux weakening function |
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