CN105375715A - Little rare earth type wide speed regulation hybrid permanent magnetic flux switching double stator motor - Google Patents

Little rare earth type wide speed regulation hybrid permanent magnetic flux switching double stator motor Download PDF

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Publication number
CN105375715A
CN105375715A CN201510756884.8A CN201510756884A CN105375715A CN 105375715 A CN105375715 A CN 105375715A CN 201510756884 A CN201510756884 A CN 201510756884A CN 105375715 A CN105375715 A CN 105375715A
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permanent magnet
stator
motor
hybrid permanent
rare earth
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CN105375715B (en
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朱孝勇
李西京
全力
杜怿
张超
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Jiangsu University
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Jiangsu University
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/17—Stator cores with permanent magnets

Abstract

The invention discloses a little rare earth type wide speed regulation hybrid permanent magnetic flux switching double stator motor. According to the motor, X outer stator teeth are distributed uniformly and circumferentially on an inner surface of an outer stator, m phases of armature windings and magnetization windings are alternately wound on the X outer stator teeth; q magnetic conduction blocks and q insulation blocks are arranged on an outer circle surface of a rotor support of a middle rotor in a staggered mode; an inner stator comprises an inner stator core and a hybrid permanent magnetic unit, K hybrid permanent magnet units are uniformly embedded in the inner stator core along the circumference direction, each hybrid permanent magnet unit respectively comprises a middle non-rare-earth aluminum nickel cobalt permanent magnet and rare earth neodymium iron boron permanent magnets at two sides of the non-rare-earth aluminum nickel cobalt permanent magnet; a stator partitioning structure is employed, the armature windings and the permanent magnets are separated and are respectively arranged in the outer stator and the inner stator, a problem of mutual limit in quantity of traditional magnetic flux switching motor permanent magnets and armature windings is solved, and motor power density and torque density are easy to improve.

Description

Few terres rares wide range speed control hybrid permanent magnet magnetic flux switch dual stator motor
Technical field
The present invention relates to a kind of magnetic flux switch dual stator motor, be specifically related to a kind of few terres rares wide range speed control hybrid permanent magnet magnetic flux switch dual stator motor used for electric vehicle, belong to motor body design field.
Background technology
Automobile drive motor is the crucial power part of electric automobile, and the important indicator evaluating and weigh drive motors performance quality has high power density, efficient (full working face high efficiency), high reliability, wide speed regulating range (> 5 times of base speed), has frequent starting and acceleration and deceleration ability, low cost etc.At present, in automobile drive motor field, the rare-earth permanent-magnet electric machine with advantages such as efficient, high power densities is main separations of new-energy automobile.But, in, heavy class rare earth permanent-magnetic material price sharp rises, rare earth permanent-magnetic material certainly will will decline to some extent in the permeability of new-energy automobile, and many car manufactures start the deep exploitation being devoted to automobile-used rare-earth permanent-magnet electric machine permanent magnetic material.Compared to traditional rotor permanent magnet type motor, rotor both has Stability Analysis of Structures without the stator permanent magnetic type electric of permanent magnet also without winding, installs simply, heat radiation is convenient, moment of inertia is little, be applicable to the advantage of high-speed cruising.The wherein flux switch permanent magnet motor of stator permanent magnetic type, make the torque of motor and power density can accomplish higher by its special poly-magnetic effect, the electric automobile field compared with high output is needed again the while of being more suitable for strict limiting motor size, flux switch permanent magnet motor can obtain highly sinusoidal back electromotive force without the need to skewed slot in addition, having the unloaded magnetic linkage of conventional rotors permanent magnet-type motor is ambipolar advantage, more has the fault-tolerant ability operated with failure concurrently.
For reducing the consumption of flux switch motor middle rare earth permanent magnetic material, Chinese Patent Application No. is disclose the application process of a kind of hybrid permanent-magnet in flux switch permanent magnet motor in the document of 201410508547.2, have employed the permanent magnet that two kinds of magnetic properties are different in the stator, wherein the rare-earth permanent magnet of high energy product is arranged on the yoke portion of stator modules, low magnetic energy product the non-rare-earth ferrite permanent magnet of low price are arranged on the teeth portion near stator modules, significantly reduce the manufacturing cost of motor on the one hand, alleviate the magnetic saturation phenomenon of stator teeth simultaneously.But in order to maintain higher power density, the volume of non-rare earth permanent-magnetic material will be several times as much as rare earth permanent-magnetic material, inside limited stator, inevitably bringing competition for space problem or cause the increase of motor manufacturing size.Meanwhile, by such motor application in electric automobile field, still there is the defect that permanent magnetism intrinsic magnetic field cannot regulate, speed adjustable range is narrow.For realizing the effective adjustment to flux switch permanent magnet motor air-gap field, the composite excitation proposed in the document that Chinese Patent Application No. is 201310091558.0 polynary Magneticflux-switching type car wheel electromotor and Chinese Patent Application No. are in the multiple tooth stator core hybrid excitation switched flux motor of a kind of composite type disclosed in the document of 201410344216.X, all have employed and set up electric excitation winding formation mixed excited magnetic pass switch motor, reach the object of widening electric machine speed regulation scope, also can reduce the consumption of rare earth permanent-magnetic material simultaneously, but, electric exciting field and the intercoupling of permanent magnetic field of composite excitation easily cause the local magnetic field height of motor saturated, thus the flux control scope that impact is actual.Visible, when few terres rares mixed excited magnetic pass switch motor of prior art is applied to electric automobile, reduces under the prerequisite of widening, ensureing the efficient performance of motor of the effective regulating and control in motor gas-gap magnetic field, electric machine speed regulation scope in rare earth permanent-magnetic material consumption etc. and remain in problem demanding prompt solution.
Summary of the invention
The present invention aims to provide a kind of applicable electric automobile operation characteristic, can keep high efficiency few terres rares wide range speed control hybrid permanent magnet magnetic flux switch dual stator motor in wide speed regulating range, on the basis of efficient, the advantage such as high power density, structure are simple, reliable keeping traditional flux switch permanent magnet motor, realize effectively reducing the consumption of rare earth permanent-magnetic material, reduce motor manufacturing cost and meet the requirement of automobile drive motor wide speed regulating range.
For achieving the above object, the present invention adopts following technical proposals: the present invention includes external stator, center roller and internal stator, there is between center roller and external stator the outside air gap in footpath, there is between center roller and internal stator the inside air gap in footpath, external stator inner surface is along the circumferential direction uniformly distributed X external stator tooth, and X external stator tooth replaces coiling m phase armature winding and magnetization winding; Center roller is made up of rotor field spider, q block magnetic inductive block and q block collets, and rotor field spider outer round surface is along the circumferential direction staggered q block magnetic inductive block and q block collets; Internal stator is made up of internal stator iron core and hybrid permanent magnet body unit, along the circumferential direction even embedded K block hybrid permanent magnet body unit in internal stator iron core, each hybrid permanent magnet body unit is formed with the rare-earth Nd-Fe-B permanent magnet being positioned at non-rare earth Al-Ni-Co permanent magnet both sides by the non-rare earth Al-Ni-Co permanent magnet of centre, and adjacent two hybrid permanent magnet body unit unit tangentially magnetize and direction is contrary; External stator number of teeth X, armature winding number of phases m, magnetic inductive block and collets quantity q, hybrid permanent-magnet element number K meet relation: X=2mN c=2K and 2q=X ± 2n, n are positive integer, N cit is the coil number of a phase winding.
Compared with prior art, tool has the following advantages in the present invention:
(1) the present invention adopts the structure of stator partition, armature winding in traditional flux switch motor is separated with permanent magnet, and be placed in external stator and internal stator respectively, take full advantage of the inner space of motor, solve the problem that traditional flux switch motor permanent magnet and armature winding consumption limit mutually, heat radiation be convenient, high, the easy lifting motor power density of space availability ratio and torque density;
(2) have employed rare-earth Nd-Fe-B and non-rare earth aluminium nickel cobalt hybrid permanent magnet material, effectively reduce the consumption of rare earth permanent-magnetic material, Nd-Fe-B permanent magnet and Al-Ni-Co permanent magnet acting in conjunction, ensure that power of motor density and torque density, provides the ability of motor-field flexible simultaneously;
(3) excitation winding is positioned at external stator, does not need the device such as slip ring, brush, and flux control scope is wide, and the magnetizing current duration is short, loss is low, operational efficiency is high; Excitation winding can carry out repeatedly filling degaussing online to Al-Ni-Co permanent magnet at any time simultaneously, changes air-gap field, improves the wide range speed control of motor invariable power run and increase magnetic to produce larger detent torque by weak magnetic.
(4) this motor adopts two kinds of permanent magnet composite excitations, and during a kind of permanent magnet accident loss of excitation, another kind of permanent magnetism physical efficiency normally supplies magnetic, ensures that motor runs well, substantially increases the reliability of motor;
(5) Nd-Fe-B permanent magnet of high-coercive force is placed in the aluminium nickel cobalt two ends of low-coercivity, Al-Ni-Co permanent magnet is not directly contacted with silicon steel sheet, reduce the local irreversible demagnetization risk of Al-Ni-Co permanent magnet, ensure that the magnetic property of Al-Ni-Co permanent magnet, efficient online adjustable magnetic is realized for motor and runs very crucial;
(6) armature winding of this motor and excitation winding all adopt centralized winding, and have end short, leakage reactance is little, and the advantage such as roll off the production line convenient, reduces copper wastage, improve electric efficiency.
(7) adopt Al-Ni-Co permanent magnet and the rare-earth Nd-Fe-B permanent magnet composite excitation of non-rare earth, determine two kinds of magnet size relations according to the size of adjustable magnetic scope.Excitation winding on external stator can carry out repeatedly filling degaussing online to Al-Ni-Co permanent magnet by the DC pulse in short-term applying different size and Orientation at any time, change air-gap field, improve the wide range speed control of motor invariable power by weak magnetic and run and increase magnetic to produce larger detent torque.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Fig. 1 is the radial section schematic diagram of few terres rares hybrid permanent magnet type bimorph transducer flux switch motor provided by the invention;
Fig. 2 is the axial cross-sectional views of few terres rares hybrid permanent magnet type bimorph transducer flux switch motor provided by the invention;
Fig. 3, Fig. 4, Fig. 5, Fig. 6 are respectively permanent magnetic circuit and the magnetic direction schematic diagram of center roller this motor under diverse location;
Fig. 7 is center roller same armature winding linkage permanent magnet flux linkage change schematic diagram in this motor under diverse location;
Fig. 8, Fig. 9 are respectively unloaded equivalent magnetic circuit figure when Al-Ni-Co permanent magnet normal magnetization, magnetic reversal state;
Figure 10 is Al-Ni-Co permanent magnet when filling degaussing, the armature winding linkage magnetic linkage oscillogram under the different level of magnetization of hybrid permanent magnet unit.
In figure: 1-1. external stator; 1-2. armature winding; 1-3. magnetizes winding; 1-4. collets; 1-5. magnetic inductive block; 1-6. internal stator; 1-7. rare-earth Nd-Fe-B permanent magnet; The non-rare earth Al-Ni-Co permanent magnet of 1-8.;
2-1. casing; 2-2. armature winding and magnetization winding; 2-3. center roller; 2-4. clutch shaft bearing; 2-5. second bearing; 2-6. the 3rd bearing; 2-7. motor output shaft; 2-8. center roller support.
Embodiment
See Fig. 1 and Fig. 2, for external stator 12 grooves/rotor 7 poles/internal stator 6 pole motor, wherein the threephase stator number of teeth is 12, and the magnetization number of windings is 6, and center roller is 7 poles, the embedded 6 pieces of hybrid permanent magnet unit of internal stator.
The present invention includes external stator 1-1, center roller 2-3 and internal stator 1-6, the outer coaxial sleeve external stator 1-1 of internal stator 1-6 outer coaxial sleeve center roller 2-3, center roller 2-3.There is between center roller 2-3 and external stator 1-1 the outside air gap in footpath, there is between center roller 2-3 and internal stator 1-6 the inside air gap in footpath.The size of outer air gap and interior air gap is 0.4-0.8mm.
External stator 1-1 is unshakable in one's determination by external stator, armature winding 1-2 and magnetization winding 1-3 is formed, the external stator number of teeth is X, external stator 1-1 inner surface is along the circumferential direction uniformly distributed X external stator tooth, on X external stator tooth, alternately coiling m phase armature winding 1-2 and magnetization winding 1-3, m phase armature winding 1-2 are integrated distribution formula winding with magnetization winding 1-3.External stator 1-1 as Fig. 1 has 12 external stator teeth, and 12 external stator teeth replace coiling threephase armature winding 1-2 and magnetization winding 1-3.
Center roller 2-3 is made up of rotor field spider, q block magnetic inductive block 1-5 and q block collets 1-4, and rotor field spider outer round surface is along the circumferential direction staggered and arranges q block magnetic inductive block 1-5 and q block collets 1-4, forms the modulation ring structure of similar magnetic gear.Center roller 2-3 as Fig. 1 is staggered by 7 pieces of magnetic inductive block 1-5 and 7 piece collets 1-4 to form.
Internal stator 1-6 is made up of internal stator iron core and hybrid permanent magnet body unit, and embedded K block hybrid permanent magnet body unit in internal stator iron core, K block hybrid permanent magnet body unit is along the circumferential direction uniformly distributed, and the external diameter of hybrid permanent magnet body unit equals the external diameter of internal stator 1-6.Each hybrid permanent magnet body unit is formed with the rare-earth Nd-Fe-B permanent magnet 1-7 being positioned at non-rare earth Al-Ni-Co permanent magnet 1-8 both sides by the non-rare earth Al-Ni-Co permanent magnet 1-8 of centre, forms hybrid permanent-magnet cellular construction.Middle non-rare earth Al-Ni-Co permanent magnet 1-8 is all equal with the rare-earth Nd-Fe-B permanent magnet 1-7 internal-and external diameter of both sides, and fits tightly together.In Fig. 1, arrow represents the direction of magnetization of hybrid permanent magnet body unit, and the magnetizing direction of hybrid permanent-magnet is tangential distribution, and adjacent two hybrid permanent magnet body unit unit tangentially magnetize and direction is contrary, i.e. NS-SN distribution.For eliminating the cross-couplings phenomenon between non-rare earth Al-Ni-Co permanent magnet 1-8 and rare-earth Nd-Fe-B permanent magnet 1-7 as much as possible, here the length along the direction of magnetization of non-rare earth Al-Ni-Co permanent magnet 1-8 be taken as rare-earth Nd-Fe-B permanent magnet 1-7 about 3.5 times of the length along the direction of magnetization.As being embedded with 6 pieces of hybrid permanent magnet body units in internal stator 1-6 in Fig. 1.
External stator number of teeth X, armature winding 1-2 number of phases m, magnetic inductive block 1-5 and collets 1-4 quantity q, hybrid permanent-magnet element number K meet relation: X=2mN c=2K and 2q=X ± 2n, n are positive integer, wherein N cfor the coil number of formation one phase winding of definition.
See Fig. 2, be all fixed on casing 2-1 by external stator 1-1 and internal stator 1-6, center roller 2-5 is connected with motor output shaft 2-7 by support 2-8, and is rotationally connected by clutch shaft bearing 2-4 and the second bearing 2-5 and casing 2-1; Motor output shaft 2-7 is rotationally connected by the 3rd bearing 2-6 and casing 2-1.
See Fig. 3 and Fig. 4, " magnetic flux switching " principle is followed in the operation of this motor, the magnetic inductive block 1-5 of center roller 2-5 is when position as shown in Figure 3, the magnetic flux that non-rare earth Al-Ni-Co permanent magnet 1-8 and rare-earth Nd-Fe-B permanent magnet 1-7 produces passes external stator tooth and enters center roller 2-5, and then forms a closed-loop path.For the armature winding 1-2 of zero load, its two ends can induce corresponding back electromotive force.And when shown in rotor motion to Fig. 5 during position, permanent magnet flux quantitatively remains unchanged, but the direction walked is for just in time contrary armature winding 1-2, for penetrating external stator tooth.Obviously, the back electromotive force now produced is compared with upper a kind of situation, and numerical value is equal but polarity is contrary.Just based on this principle, when center roller 2-5 rotates, magnetic flux cyclic variation between positive and negative maximum that permanent magnet produces, and then make the amplitude of the back electromotive force of armature winding 1-2 induction generation and phase place also be cyclic variation.Fig. 3, Fig. 4, Fig. 5, Fig. 6 respectively illustrate permanent magnetic circuit and the magnetic direction of center roller 2-3 this motor under diverse location, wherein in Fig. 3 and Fig. 5, the magnetic linkage amplitude of the linkage of armature winding 1-2 is respectively positive and negative maximum, in Fig. 4 and Fig. 6, the linkage induction magnetic flux that armature winding 1-2 produces under permanent magnetic field is zero; Namely, after center roller 2-5 rotates, magnetic inductive block 1-5 rotates to S pole from the N pole of hybrid permanent-magnet, can produce linkage bipolarity magnetic linkage as shown in Figure 7 in corresponding stator armature winding 1-2, four positions in Fig. 7 in a, b, c, d difference corresponding diagram 3, Fig. 4, Fig. 5, Fig. 6.
Shown in Fig. 7,8, for this magnetic circuit, permanent magnet is to every pole total magnetic flux that external magnetic circuit provides:
Φ m = F c _ a n c + 2 F c _ n f b R m _ a n c + 2 R m _ n f b + R m _ g + R m _ r = Φ a n c + Φ n f b - - - ( 1 )
The calculating magnetomotive force F of permanent magnet magnetomotive force sources c=H cl, H in formula cbe absolute value, l is permanent magnet magnetizing direction length.
Define weak magnetic coefficient: k = Φ m Φ n f b = F c _ a n c + 2 F c _ n f b 2 F c _ n f b , - - - ( 2 )
Wherein, F c_anc, F c_nfbbe respectively the calculating magnetomotive force of non-rare earth Al-Ni-Co permanent magnet 1-7 and rare-earth Nd-Fe-B permanent magnet 1-8, R m_anc, R m_nfbbe respectively the interior magnetic resistance of non-rare earth Al-Ni-Co permanent magnet 1-7 and rare-earth Nd-Fe-B permanent magnet 1-8, R m_g, R m_rbe respectively air-gap reluctance and rotor magnetic resistance, Φ anc, Φ nfbbe respectively every pole magnetic flux that non-rare earth Al-Ni-Co permanent magnet 1-7 and rare-earth Nd-Fe-B permanent magnet 1-8 provides, Φ mfor every pole total magnetic flux that two kinds of permanent magnets provide.
Non-rare earth Al-Ni-Co permanent magnet 1-7 direction of magnetization length l ancwith rare-earth Nd-Fe-B permanent magnet 1-8 direction of magnetization length l nfbtwo constraintss when normal magnetization and magnetic reversal need be met, as follows:
Shown in Figure 8, when non-rare earth Al-Ni-Co permanent magnet 1-7 is by normal magnetization, when Al-Ni-Co permanent magnet completely being magnetized be greater than 1.4 to the maximum weak magnetic coefficient of whole magnetic circuit magnetic flux, then
Φ m Φ n f b = F c _ a n c + 2 F c _ n f b 2 F c _ n f b = H c _ a n c l a n c + 2 H c _ n f b l n f b 2 H c _ n f b l n f b > 1.4 , - - - ( 3 )
Shown in Figure 9, when non-rare earth Al-Ni-Co permanent magnet 1-7 is reversed magnetization, when Al-Ni-Co permanent magnet completely being magnetized be less than 0.6 to the minimum weak magnetic coefficient of whole magnetic circuit magnetic flux, then
0.6 > Φ m Φ n f b = 2 F c _ n f b - F c _ a n c 2 F c _ n f b = 2 H c _ n f b l n f b - H c _ a n c l a n c 2 H c _ n f b l n f b > 0 , - - - ( 4 )
By H anc=119366A/m, H nfb=890000A/m substitutes into formula (3) (4), arranges the length ratio of the direction of magnetization of non-rare earth Al-Ni-Co permanent magnet 1-7 and rare-earth Nd-Fe-B permanent magnet 1-8 is 7.45>l anc/ 2l nfb>2.98.
See Fig. 1 and Figure 10, utilize Finite Element Simulation Analysis, research magnetization winding 1-3 is to the adjusting function of motor-field of the present invention.From Electrical Motor theory, when other parameter constants, armature winding 1-2 linkage magnetic linkage amplitude is larger, and motor output torque is larger, and load capacity is stronger.When described motor runs, when magnetizing winding 1-3 and passing into the direct current of different size, the magnetization of non-rare earth Al-Ni-Co permanent magnet 1-7 can be changed.When the rare earth Al-Ni-Co permanent magnet 1-7 direction of magnetization non-in hybrid permanent magnet unit is identical with total magnetomotive force direction of generation, the magnetization of non-rare earth Al-Ni-Co permanent magnet 1-7 can be increased, make the magnetic linkage amplitude of armature winding 1-2 increase, improve the torque output capability of motor; If when in hybrid permanent magnet unit, the non-rare earth Al-Ni-Co permanent magnet 1-7 direction of magnetization is contrary with total magnetomotive force of generation, the magnetic linkage amplitude of armature winding 1-2 is then made to reduce, when armature winding input rated current is constant, reduce the Driving Torque of motor, improve motor output speeds, play the effect of weak magnetic speed-up, the speed adjustable range of motor can be improved.Under Figure 10 shows that the different magnetized state of non-rare earth Al-Ni-Co permanent magnet 1-7, the change curve of armature winding 1-2 linkage magnetic linkage.Can obtain thus, along with increase or the reduction of non-rare earth Al-Ni-Co permanent magnet 1-7 magnetized state, armature winding 1-2 linkage magnetic linkage also increases thereupon or reduces, namely magnetization winding reaches by the magnetization of on-line control non-rare earth Al-Ni-Co permanent magnet 1-7 the object changing hybrid permanent magnet unit level of magnetization, thus realize on-line control and the control of the air-gap field of motor, make the speed adjustable range expanded of motor of the present invention, for driving motor for electric automobile, there is significant superiority.

Claims (5)

1. a few terres rares wide range speed control hybrid permanent magnet magnetic flux switch dual stator motor, comprise external stator (1-1), center roller (2-3) and internal stator (1-6), there is between center roller (2-3) and external stator (1-1) the outside air gap in footpath, there is between center roller (2-3) and internal stator (1-6) the inside air gap in footpath, it is characterized in that: external stator (1-1) inner surface is along the circumferential direction uniformly distributed X external stator tooth, alternately coiling m phase armature winding (1-2) and magnetization winding (1-3) on X external stator tooth; Center roller (2-3) is made up of rotor field spider, q block magnetic inductive block (1-5) and q block collets (1-4), and rotor field spider outer round surface is along the circumferential direction staggered q block magnetic inductive block (1-5) and q block collets (1-4); Internal stator (1-6) is made up of internal stator iron core and hybrid permanent magnet body unit, along the circumferential direction even embedded K block hybrid permanent magnet body unit in internal stator iron core, each hybrid permanent magnet body unit by centre non-rare earth Al-Ni-Co permanent magnet (1-8) and be positioned at non-rare earth Al-Ni-Co permanent magnet (1-8) both sides rare-earth Nd-Fe-B permanent magnet (1-7) form, adjacent two hybrid permanent magnet body unit unit tangentially magnetize and direction is contrary; External stator number of teeth X, armature winding (1-2) number of phases m, magnetic inductive block (1-5) and collets (1-4) quantity q, hybrid permanent-magnet element number K meet relation: X=2mN c=2K and 2q=X ± 2n, n are positive integer, N cit is the coil number of a phase winding.
2. lack terres rares wide range speed control hybrid permanent magnet magnetic flux switch dual stator motor according to claim 1, it is characterized in that: non-rare earth Al-Ni-Co permanent magnet (1-7) is along direction of magnetization length l ancwith rare-earth Nd-Fe-B permanent magnet (1-8) along direction of magnetization length l nfbneed meet: 7.45>l anc/ 2l nfb>2.98.
3. lack terres rares wide range speed control hybrid permanent magnet magnetic flux switch dual stator motor according to claim 1, it is characterized in that: the size of outer air gap and interior air gap is 0.4-0.8mm.
4. lack terres rares wide range speed control hybrid permanent magnet magnetic flux switch dual stator motor according to claim 1, it is characterized in that: armature winding (1-2) and magnetization winding (1-3) are integrated distribution formula winding.
5. lack terres rares wide range speed control hybrid permanent magnet magnetic flux switch dual stator motor according to claim 1, it is characterized in that: the external diameter of hybrid permanent magnet body unit equals the external diameter of internal stator (1-6).
CN201510756884.8A 2015-11-09 2015-11-09 Few terres rares wide range speed control hybrid permanent magnet magnetic flux switching Double-stator motor Active CN105375715B (en)

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CN105914979A (en) * 2016-04-25 2016-08-31 扬州大学 Less rare earth hybrid excitation stator and rotor double partition adjustable magnetic flux permanent magnet motor
CN105958885A (en) * 2016-04-28 2016-09-21 东南大学 Double-stator doubly salient hybrid excitation motor drive system and control method thereof
CN105978270A (en) * 2016-07-08 2016-09-28 江苏大学 Stator partition type dual salient pole permanent magnetic brushless motor
CN106208574A (en) * 2016-08-17 2016-12-07 上海交通大学 A kind of piecemeal rotator type bimorph transducer becomes magnetic flux reluctance motor
CN106374648A (en) * 2016-11-10 2017-02-01 南京信息工程大学 Double stator alternative magnetic pole type bearing-free magnetic flux reversal motor
CN106505821A (en) * 2016-09-19 2017-03-15 江苏大学 A kind of primary permanent magnet vernier linear electric motors and its dividing method
CN106911237A (en) * 2017-04-20 2017-06-30 扬州大学 A kind of many excitation source bimorph transducer magnetic flux switching memory electrical machines of few terres rares
CN107688706A (en) * 2017-08-28 2018-02-13 江苏大学 A kind of design method for mixing magnetic material shunt excitation type magneto
DE102018201610A1 (en) * 2018-02-02 2019-08-08 Siemens Aktiengesellschaft Rotating electric machine and aircraft with a rotating electric machine
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