CN106451976A - E-shaped-iron-core-included mixed excitation flux-switching motor - Google Patents

E-shaped-iron-core-included mixed excitation flux-switching motor Download PDF

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Publication number
CN106451976A
CN106451976A CN201611005861.4A CN201611005861A CN106451976A CN 106451976 A CN106451976 A CN 106451976A CN 201611005861 A CN201611005861 A CN 201611005861A CN 106451976 A CN106451976 A CN 106451976A
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stator
adjacent
motor
armature
magnetic
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CN201611005861.4A
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CN106451976B (en
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李健
王凯
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Nanjing University of Aeronautics and Astronautics
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Nanjing University of Aeronautics and Astronautics
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K21/00Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02Details
    • H02K21/04Windings on magnets for additional excitation ; Windings and magnets for additional excitation
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/14Stator cores with salient poles
    • H02K1/146Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H02K1/148Sectional cores
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/52Fastening salient pole windings or connections thereto
    • H02K3/521Fastening salient pole windings or connections thereto applicable to stators only
    • H02K3/524Fastening salient pole windings or connections thereto applicable to stators only for U-shaped, E-shaped or similarly shaped cores

Abstract

The invention relates to an E-shaped-iron-core-included mixed excitation flux-switching motor comprising a stator having a salient-pole structure and a rotor having a salient-pole structure. The stator consists of an even number of E-shaped iron core units arranged successively along a circumferential direction, permanent magnets, armature coils and excitation coils, wherein the permanent magnets, armature coils and excitation coils are arranged between adjacent E-shaped iron core units. The permanent magnets carry out tangential magnetizing; and the magnetizing directions of each two adjacent permanent magnets are opposite. Adjacent armature teeth of the adjacent E-shaped iron core units and one clamped permanent magnets form a stator pole; the armature coils wind around all stator poles; the Ns/M armature coils distributed symmetrically by using the center of circle of the stator as the center are connected in series to form one phase of armature winding, wherein the Ns expresses the number of poles of the stator and the m expresses the number of phases of the motor. The provided motor is characterized that the excitation coils wind around all stator poles, directions of excitation currents exerted by the excitation coils arranged on the adjacent stator poles are opposite, and all excitation coils are connected in series to form an excitation winding. On the basis of the structure, the maximum permanent-magnet linkage can be obtained without extra copper losses; and the flux adjustment range is large.

Description

E shaped iron core mixed excited magnetic pass switch motor
Technical field
The present invention relates to the technical field of motor, refer specifically to a kind of technology of E shaped iron core mixed excited magnetic pass switch motor Field.
Background technology
Flux switch permanent magnet motor is a kind of stator permanent magnetic type double salient-pole electric machine of new structure, its permanent magnetic steel and electricity Pivot winding is all located on stator, and both no windings and no permanent magnet on rotor.Because its structure is simple, reliable it is easy to scattered Heat, and also have the advantages that high power density, high efficiency, load capacity are strong, highly sinusoidal back-emf can be obtained, and be considered can Substitute conventional rotors permanent magnet-type motor, there is preferable application prospect.
It is one of flux switch permanent magnet motor that E-type magnetic leads to switch permanent magnet motor, and its stator core is by silicon steel plate stacking Form, and stator core adopts E font stalloy, (volume 28 of the Proceedings of the CSEE such as published on July 25th, 2008 21st phase page 96) on proposed by Ji Jinghua《The operation principle of Novel stator magneto fault-tolerant motor and performance evaluation》In just Disclose such motor, the stationary part of this motor is made up of E type stator core and permanent magnet, permanent magnet along the circumferential direction between Every distribution, and each permanent magnet is clipped between two adjacent E type stator cores, the armature tooth of adjacent two E type stator cores It is wound with armature winding together with folded permanent magnet, no winding in the center tooth of E type stator core.Led to using this E-type magnetic and cut Change magneto, not only can save permanent magnet material, and because the presence of center tooth is so that flux switch permanent magnet motor also has Fault-tolerant operation ability.
However, above-mentioned E-type magnetic leads to switch permanent magnet motor due to only having permanent magnet excitation, its adjustable magnetic is limited in one's ability.For this person Design again and there is the mixed excited magnetic pass switch motor in two magnetic potential sources (carrying permanent magnet and Exciting Windings for Transverse Differential Protection) come, such as On October 10th, 2009 publishes《Motor and Electronic Engineering Association's magnetics volume》(IEEE TRANSACTIONS ON MAGNETICS), page 4728 to page 4731 of volume 45 the 10th phase upper disclosed is proposed by professor Hua Wei《A kind of new Hybrid Vehicle mixed excited magnetic pass switch motor》.And and for example on May 4th, 2011 publish《Motor and electronic engineering Shi Xiehui Vehicle Technology is rolled up》(IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY), volume 60 the 4th phase Page 1365 to page 1373 upper disclosed to be proposed by Chen Jintao (J.T.cheng)《A kind of new electric/hybrid automobile Use mixed excited magnetic pass switch motor》, the two all adds Exciting Windings for Transverse Differential Protection, by changing the size of current of Exciting Windings for Transverse Differential Protection, To obtain the adjustable magnetic ability increasing magnetic or weak magnetic, thus simple E-type magnetic can be preferably overcome to lead to the defect of switch permanent magnet motor.But The addition of the former Exciting Windings for Transverse Differential Protection sacrifices the space of permanent magnet, inevitably reduces air gap flux density, and power density Also can reduce with torque etc., if necessary to improve magnetic linkage (increasing magnetic), then need to apply to increase magnetoelectricity stream in Exciting Windings for Transverse Differential Protection, but this is again Extra copper loss can be increased.And the motor of the latter's design includes the stator 1 ' being salient-pole structure and rotor 2 ', wherein stator again Include multiple E sections core units 11 ' being circumferentially arranged in order, be located at adjacent E sections core unit between permanent magnet 12 ' with And armature coil 13 ' and magnet exciting coil 14 ', as shown in Figure 1.Lead to switch permanent magnet motor because magnet exciting coil 14 ' is wound on E-type magnetic The middle fault-tolerant teeth of E sections core unit 11 ' on, when increasing magnetic (exciting current be more than 0), be passed through positive in Exciting Windings for Transverse Differential Protection Exciting current, said structure can aggravate the saturation of stator core, make iron core magnetic resistance increase, result in its increase magnetic scope very little (see Figure 18 in its paper), it could even be possible to magnetic field does not strengthen, decline on the contrary, the adjustable magnetic effect as shown in this specification accompanying drawing 4 dotted line Really.That is, when hope increases magnetic, magnetic linkage can become big to this motor, but this poor ability, or even complete with the result of hope increasing magnetic On the contrary, that is, magnetic linkage is possible to diminish.And this motor equally can cause the local saturation of stator core so that iron core magnetic in weak magnetic Resistance increases, and leads to its weak magnetic range of accommodation also very little.Therefore existing E shaped iron core mixed excited magnetic pass switching electricity is need Improve in further.
Content of the invention
The technical problem to be solved is the present situation for prior art, provides one kind again without extra copper Consumption just can obtain permanent magnet flux linkage and the big E shaped iron core mixed excited magnetic pass switch motor of adjustable magnetic scope of maximum.
The present invention solves the technical scheme that adopted of above-mentioned technical problem:A kind of E shaped iron core mixed excited magnetic pass switching Motor, includes the stator being salient-pole structure and rotor, and wherein stator includes the E type that even number is circumferentially arranged in order again Iron core unit, the permanent magnet being located between adjacent E sections core unit and armature coil and magnet exciting coil, described permanent magnet is equal Cutting orientation magnetizing, and the magnetizing direction of two adjacent permanent magnets is contrary, the adjacent armatures tooth of adjacent E sections core unit and folded permanent magnetism Body forms stator poles, each stator poles is arranged with described armature coil, with the symmetrical N in the stator center of circles/ m armature A phase armature winding, wherein N is formed after coil series connectionsFor the number of poles of stator, m be number of motor phases it is characterised in that:Each described fixed The extremely upper magnet exciting coil also described in winding of son, and the exciting current that the magnet exciting coil in adjacent stator pole applies is in opposite direction, respectively Exciting Windings for Transverse Differential Protection is formed after magnet exciting coil series connection.
In such scheme, preferably Exciting Windings for Transverse Differential Protection and armature winding all using centralized winding, to reduce end copper Consumption.
In above-mentioned each scheme, described rotor can be designed to straight pole, such as considers the relation of motor cogging torque harmonic, This rotor is accomplished by using oblique pole.
Compared with prior art, because the magnet exciting coil of the present invention is wound in stator salient poles, and in adjacent stator pole The exciting current that magnet exciting coil applies is in opposite direction, forms Exciting Windings for Transverse Differential Protection after all magnet exciting coil series connection, therefore in adjustable magnetic, when After Exciting Windings for Transverse Differential Protection is passed through electric current, exciting current can form a bias field at corresponding stator salient poles, this bias field meeting Make the magnetic linkage of symmetrical armature coil in every phase respectively upwards, offset downward, that is, that armature coil is located is fixed for this bias field The close increase of magnetic in sub- iron core (is positive increase upwards, is downwards negative increase, magnetic is close in a word is to become big), and works as excitation When current amplitude is bigger, above-mentioned bias field is also bigger, and the exactly presence of this bias field is so that armature coil place stator ferrum Core gradually saturation, rate diminishes the magnetic linkage in armature coil over time, so that this phase magnetic linkage of synthesis can be with encouraging The change of magnetic current amplitude reduces greatly, that is, reach the function of weak magnetic;When being zero in exciting current, it is possible to obtain maximum magnetic Chain.I.e. the present invention dexterously utilizes the gradually saturation of stator core so that its easy adjustable magnetic (weak magnetic).Therefore the present invention can be obvious Improve the adjustable magnetic performance of motor, to meet the speed governing demand of motor.
Brief description
Fig. 1 is the structural representation of the motor of Chen Jin great waves design in prior art;
Fig. 2 is the structural representation of the embodiment of the present invention;
Fig. 3 be in the embodiment of the present invention A phase magnetic linkage with exciting current variation diagram, wherein,
Fig. 3 a is the A phase magnetic linkage variation diagram when exciting current is for 0A;
Fig. 3 b is the A phase magnetic linkage variation diagram when exciting current is for 10A;
Fig. 3 c is the A phase magnetic linkage variation diagram when exciting current is for 30A;
Fig. 4 is adjustable magnetic comparison diagram (the A phase magnetic linkage amplitude of the embodiment of the present invention and the motor of Chen Jin great waves design in prior art With exciting current change);
Fig. 5 be the motor A phase magnetic linkage of Chen Jin great waves design in prior art with exciting current variation diagram, wherein,
Fig. 5 a is the A phase magnetic linkage variation diagram when exciting current is for 0A;
Fig. 5 b is the A phase magnetic linkage variation diagram when exciting current is for 10A;
Fig. 5 c is the A phase magnetic linkage variation diagram when exciting current is for 30A;
Specific embodiment
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
As shown in Fig. 2 this E shaped iron core mixed excited magnetic pass switch motor includes NsThe stator 1 of individual number of poles and NrIndividual number of poles Rotor 2, the pole of this stator 1 and rotor 2 is designed to double-salient-pole structure, wherein stator 1 include again even number circumferentially according to The E sections core unit 11 of secondary arrangement and the permanent magnet 12 being located between adjacent E sections core unit, the present embodiment is with three-phase 6/13 pole (being of course also apply to the motor that the single-phase or number of phases is more than three-phase) to be described as a example motor, that is, stator has Ns=6 salient poles, rotor There is Nr=13 salient poles.6 salient poles of stator are respectively A1 pole, B1 pole, C1 pole, A2 pole, B2 pole, C2 pole, and E sections core unit selects It is taken as 6, each E sections core unit 11 is formed by multiple E font silicon steel plate stackings again;Permanent magnet 12 also elects 6 as, each permanent magnet 12 equal cutting orientation magnetizings, and the magnetizing direction of two adjacent permanent magnets is contrary.The adjacent armatures tooth of adjacent E sections core unit 11 and institute Folder permanent magnet 12 forms stator poles, and each stator poles are arranged with armature coil 13 and magnet exciting coil 14, and adjacent stator pole On magnet exciting coil apply exciting current in opposite direction.With the symmetrical N in the stator center of circlesGroup after/m armature coil series connection Cheng Yixiang armature winding, wherein m are number of motor phases, due in the present embodiment, Ns=6, m=3, then above-mentioned 6 armature coils 13 In form a phase armature winding after symmetrical two armature coils series connection, i.e. A1 Polar armature coil in Fig. 1 and A2 Polar armature Coil is in series and forms A phase armature winding, and B1 Polar armature coil and B2 Polar armature coil are in series and form B phase armature winding, C1 Armature coil and C2 Polar armature coil are in series and form C phase armature winding, that is, adopt centralized armature winding;And 6 are encouraged Centralized Exciting Windings for Transverse Differential Protection is formed after being serially connected in magnetic coil.
Above-mentioned rotor 2 is located in the space being combined into by above-mentioned 6 E sections core units 11 and 6 permanent magnets 12, this rotor 2 Made using permeability magnetic material, be arranged in the rotating shaft that non-magnet_conductible material is made.This rotor design become 13 straight poles naturally it is also possible to For 13 oblique poles, or it is arranged in the rotating shaft that permeability magnetic material is made.
Motor in the present embodiment, can be as motor running it is also possible to as generator operation.
Using the motor of said structure, both remained the high power density of flux switch permanent magnet motor, high efficiency, band carry energy Power is strong, can obtain highly sinusoidal back-emf the advantages of, and because the presence of fault-tolerant teeth is so that motor has fault-tolerant operation ability, with When also there is handling ease, the especially motor in embodiment has preferable adjustable magnetic performance.
Because the Changing Pattern of every phase magnetic linkage of motor is the same, now so that the magnetic linkage analyzing A phase changes with exciting current as a example Motor the present embodiment to be described has preferable adjustable magnetic performance.
Following described magnetic linkages are unloaded magnetic linkages, and when that is, armature winding is not passed through electric current, permanent magnet and Exciting Windings for Transverse Differential Protection are altogether With the magnetic linkage being provided.As shown in figure 3, the fine line of in figure is A1 Polar armature coil rotates the magnetic in the electric cycle in rotor Chain changes, and dotted line is the magnetic linkage change that A2 Polar armature coil rotates in the electric cycle in rotor, and heavy line is A1 Polar armature line A phase magnetic linkage after the magnetic linkage synthesis of the magnetic linkage of circle and A2 Polar armature coil rotates the magnetic linkage change in the electric cycle in rotor. Can see from Fig. 3 a, as exciting current IfDuring for 0A, the excursion of A phase magnetic linkage is in -0.0652Wb~0.0652Wb; Can be seen by Fig. 3 b, as exciting current IfDuring for 10A, the excursion of A phase magnetic linkage about -0.052Wb~ 0.052Wb;Can be seen by Fig. 3 c, as exciting current IfDuring for 30A, the excursion of A phase magnetic linkage is about in -0.008Wb ~0.008Wb it can be seen that, because exciting current defines a bias field, make A1 Polar armature coil and A2 Polar armature coil Magnetic linkage respectively upwards, offset downward, and the A phase magnetic linkage synthesizing is big and reduce with the change of exciting current amplitude.By above-mentioned change Change figure can draw the amplitude variation diagram that A phase magnetic linkage changes with exciting current, as shown by the bold lines in fig.Can by the solid line of Fig. 4 Know, as exciting current IfWhen 0A increases to 40A, A phase magnetic linkage amplitude range changes in 0.0652Wb~0.0046Wb, table Bright A phase magnetic linkage is with the change rule reducing greatly of exciting current amplitude, and A phase magnetic linkage amplitude range is larger.
And the motor that in prior art, Chen Jin great waves design, under similarity condition, can see from Fig. 5 a, work as exciting current During for 0A, the excursion of A phase magnetic linkage is about in -0.0652Wb~0.0652Wb;Can be seen by Fig. 5 b, when excitation electricity When flowing for 10A, the excursion of A phase magnetic linkage is about in -0.0636Wb~0.0636Wb;Can be seen by Fig. 5 c, when encouraging Magnetoelectricity stream be 30A when, the excursion of A phase magnetic linkage about in -0.0576Wb~0.0576Wb it can be seen that, A1 Polar armature The magnetic linkage of the magnetic linkage of coil and A2 Polar armature coil is the reduction symmetrical with regard to X-axis (A phase magnetic linkage is equal to horizontal line when zero), closes The A phase magnetic linkage becoming reduces greatly also with the change of exciting current amplitude, but amplitude range is less.Chen Jin is drawn by above-mentioned variation diagram The amplitude variation diagram that the A phase magnetic linkage of the motor of great waves design changes with exciting current, as indicated with broken lines in fig. 4.Can by Fig. 4 dotted line Know, when exciting current increases to 40A from 0A, A phase magnetic linkage amplitude range is in 0.065 2Wb~0.054Wb, A phase magnetic linkage Amplitude range is less, shows that its adjustable magnetic is limited in one's ability.
Therefore, it can be seen from figure 4 that in the present embodiment motor adjustable magnetic scope be much larger than prior art in motor tune Magnetic scope.

Claims (3)

1. a kind of E shaped iron core mixed excited magnetic pass switch motor, includes the stator (1) being salient-pole structure and rotor (1), its Middle stator (1) include again E sections core unit (11) that even number is circumferentially arranged in order, be located at adjacent E sections core unit it Between permanent magnet (12) and armature coil (13) and magnet exciting coil (14), described permanent magnet (12) all cutting orientation magnetizings, and phase The magnetizing direction of adjacent two permanent magnets (12) is contrary, the adjacent armatures tooth of adjacent E sections core unit (11) and folded permanent magnet (12) form stator poles, each stator poles are arranged with described armature coil (13), with the symmetrical N in the stator center of circles/m A phase armature winding, wherein N is formed after individual armature coil series connectionsFor the number of poles of stator, m be number of motor phases it is characterised in that:Respectively Magnet exciting coil (14) also described in winding in described stator poles, and the excitation electricity that the magnet exciting coil (14) in adjacent stator pole applies Stream is in opposite direction, forms Exciting Windings for Transverse Differential Protection after each magnet exciting coil (14) series connection.
2. E shaped iron core mixed excited magnetic pass switch motor according to claim 1 it is characterised in that:Described Exciting Windings for Transverse Differential Protection With armature winding all using centralized winding.
3. E shaped iron core mixed excited magnetic pass switch motor according to claim 1 and 2 it is characterised in that:Described rotor (2) it is designed to straight pole or oblique pole.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107026544A (en) * 2017-05-24 2017-08-08 重庆大学 A kind of composite excitation type combined type double-rotor machine
CN110545021A (en) * 2019-09-26 2019-12-06 哈尔滨工业大学 mixed excitation multi-phase reluctance motor and power generation system
CN110932510A (en) * 2019-12-12 2020-03-27 齐鲁工业大学 Double-stator magnetic flux switching wind driven generator
CN111082548A (en) * 2020-01-10 2020-04-28 南京航空航天大学 Stator modular hybrid excitation alternating pole magnetic flux reverse motor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290883A (en) * 2011-08-26 2011-12-21 东南大学 Redundant excitation double-armature winding multiphase magnetic flux switching motor with fault-tolerant teeth
CN202210713U (en) * 2011-08-26 2012-05-02 东南大学 High reliability magnetic flux switching type motor
CN202334229U (en) * 2011-11-17 2012-07-11 东南大学 Stator surface-mounted-type doubly salient permanent magnet motor with complementary winding magnetic circuits
CN103248189A (en) * 2013-05-03 2013-08-14 东南大学 Bipolar stator-surface-mounting type permanent magnet motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102290883A (en) * 2011-08-26 2011-12-21 东南大学 Redundant excitation double-armature winding multiphase magnetic flux switching motor with fault-tolerant teeth
CN202210713U (en) * 2011-08-26 2012-05-02 东南大学 High reliability magnetic flux switching type motor
CN202334229U (en) * 2011-11-17 2012-07-11 东南大学 Stator surface-mounted-type doubly salient permanent magnet motor with complementary winding magnetic circuits
CN103248189A (en) * 2013-05-03 2013-08-14 东南大学 Bipolar stator-surface-mounting type permanent magnet motor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107026544A (en) * 2017-05-24 2017-08-08 重庆大学 A kind of composite excitation type combined type double-rotor machine
CN110545021A (en) * 2019-09-26 2019-12-06 哈尔滨工业大学 mixed excitation multi-phase reluctance motor and power generation system
CN110545021B (en) * 2019-09-26 2020-11-10 哈尔滨工业大学 Mixed excitation multi-phase reluctance motor and power generation system
CN110932510A (en) * 2019-12-12 2020-03-27 齐鲁工业大学 Double-stator magnetic flux switching wind driven generator
CN110932510B (en) * 2019-12-12 2021-01-29 齐鲁工业大学 Double-stator magnetic flux switching wind driven generator
CN111082548A (en) * 2020-01-10 2020-04-28 南京航空航天大学 Stator modular hybrid excitation alternating pole magnetic flux reverse motor

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