阅读说明：本技术 不对称双定子混合励磁型轴向磁场磁通切换电机 (Asymmetric bimorph transducer composite excitation type axial magnetic field flux switch motor ) 是由 徐妲 朱莲莉 *** 王飞 于 2018-05-22 设计创作，主要内容包括：本发明提供了一种不对称双定子混合励磁型轴向磁场磁通切换电机,包括同轴安装的第一定子、第二定子和转子。第一定子包括交替设置的若干导磁铁芯和永磁体,每一导磁铁芯包括两个定子齿a和连接定子齿a的定子轭部,两个定子齿a之间设置平行槽a,相邻导磁铁芯的相邻定子齿a之间绕制电枢绕组；第二定子设置若干T型槽,T型槽将第二定子分成若干双齿结构的定子齿b,定子齿b的双齿之间设置平行槽b,相邻定子齿b的相邻齿绕制电枢绕组定子齿b根部绕制励磁绕组；转子设置于两个定子之间且与两个定子之间留有气隙,转子包括非导磁环和若干转子齿,转子齿沿非导磁环周向均匀布设。(The present invention provides a kind of asymmetric bimorph transducer composite excitation type axial magnetic field flux switch motors, including coaxial mounted first stator, the second stator and rotor.First stator includes several conducting magnet cores and permanent magnet being arranged alternately, each conducting magnet core includes the stator yoke of two stator tooth a and connecting stator tooth a, parallel slot a, coiling armature winding between the adjacent stators tooth a of adjacent conducting magnet core are set between two stator tooth a；Several T-slots are arranged in second stator, and the second stator is divided into the stator tooth b of several bidentate structures, parallel slot b, the adjacent teeth coiling armature winding stator tooth b root coiling excitation winding of adjacent stators tooth b is arranged between the bidentate of stator tooth b by T-slot；Rotor is set between two stators and between two stators there are air gap, and rotor includes non-magnetic ring and several rotor tooths, and rotor tooth is circumferentially uniformly distributed along non-magnetic ring.)

1. a kind of asymmetry bimorph transducer composite excitation type axial magnetic field flux switch motor, including coaxial mounted first stator (1), the second stator (2) and rotor (3), which is characterized in that

First stator (1) includes several conducting magnet cores (4) and permanent magnet (5) being arranged alternately,

Each conducting magnet core (4) includes the stator yoke (4-2) of two stator tooth a (4-1) and connecting stator tooth a (4-1),

Parallel slot a (4-3) is set between two stator tooth a (4-1),

Coiling armature winding (7) between the adjacent stators tooth a (4-1) of adjacent conducting magnet core (4)；

Several T-slots (6-1) are arranged in second stator (2),

Second stator (2) is divided into the stator tooth b (6-2) of several bidentate structures by T-slot (6-1),

Parallel slot b (6-3) is set between the bidentate of stator tooth b (6-2),

The adjacent teeth coiling armature winding (7) of adjacent stators tooth b (6-2)

Stator tooth b (6-2) root coiling excitation winding (8)；

Rotor (3) is set between two stators and between two stators there are air gap,

Rotor (3) includes non-magnetic ring (3-2) and several rotor tooths (3-1),

Rotor tooth (3-1) is circumferential uniformly distributed along non-magnetic ring (3-2).

2. motor according to claim 1, which is characterized in that the stator tooth a (4-1) of the first stator (1) and the second stator (2) the tooth cross section of stator tooth b (6-2) is identical, the first stator (1) and the second stator (2) axially symmetric installation, i.e. parallel slot A (4-3) and the distribution of parallel slot b (6-3) face.

3. motor according to claim 1, which is characterized in that the quantity of stator conducting magnet core (4) is 4n, the second stator (2) quantity of T-slot (6-1) is 4n, and the quantity of rotor tooth (3-1) is 4n ± 2.

4. motor according to claim 1, which is characterized in that armature winding (7), which is wound on the first stator (1) and second, to be determined On the stator tooth of sub (2), single-phase winding is made of four coils of orthogonal direction on each stator.

5. motor according to claim 1, which is characterized in that excitation winding (8) is wound on the root of stator tooth b (6-2), Adjacent exciting current it is contrary.

Technical field

The present invention relates to a kind of mixed excitation electric machine technology, especially a kind of asymmetric bimorph transducer composite excitation type axial magnetic Field flux switch motor.

Background technique

The stationary magnetic field that permanent magnet generates makes magneto be difficult to adjust the disadvantages of relatively narrow with speed adjustable range there are voltage, limits It has been made in the popularization and application in the fields such as constant pressure power generation, therefore, how effectively to adjust air-gap field in magneto by The concern of domestic and foreign scholars.

The appearance of mixed excitation electric machine can effectively solve the above problems, it not only inherit magneto power density greatly and Many advantages, such as high reliablity, and possess electro-magnetic motor magnetic field can flexible modulation the advantages of, vehicle traction, wind-force send out The fields such as electricity, industry transmission and aerospace have wide development space.In recent years, domestic and international motor experts and scholars mention in succession A variety of mixed excitation electric machines such as magnetic pole partition type, parallel construction formula, combined rotor formula, Lundell and shunt field are gone out, have obtained Research achievement abundant.

The Magneticflux-switching type magneto that French scholar E.Hoang was proposed in 1997 is a kind of stator permanent magnetic type electric, This kind of motor stator and rotor all use double-salient-pole structure, and permanent magnet and winding are placed on stator, both without permanent magnet or nothing on rotor Winding, structure is simple, is easy to cooling, high mechanical strength.Mixed excited magnetic pass switch motor have both flux switch motor and The advantages of mixed excitation electric machine, the size and Orientation by controlling exciting current adjust air gap flux density.

Using the axial magnetic flux switch motor of composite excitation structure, permanent magnet and winding are arranged on stator, on rotor Not only without permanent magnet but also without winding, structure is simple, and axial length is short, is easy to cooling, improves the operational reliability of motor.But That adjustable magnetic range is still not wide enough, cogging torque and harmonic component are all bigger, increase magnetic property and weak magnetic property still have it is biggish Development space limits it in the application of wide fast drive system occasion.

Summary of the invention

The purpose of the present invention is to provide a kind of asymmetric bimorph transducer composite excitation type axial magnetic field flux switch motor, solutions Composite excitation type axial magnetic field flux switch motor air-gap field adjustable range existing in the prior art of having determined is not wide enough, tooth socket The problems such as torque and big harmonic component.

Realize the technical solution of the object of the invention are as follows: a kind of asymmetry bimorph transducer composite excitation type axial magnetic field magnetic flux switching Motor, including coaxial mounted first stator, the second stator and rotor.First stator includes several conducting magnet cores being arranged alternately And permanent magnet, each conducting magnet core include the stator yoke of two stator tooth a and connecting stator tooth a, are set between two stator tooth a Set parallel slot a, coiling armature winding between the adjacent stators tooth a of adjacent conducting magnet core；Several T-slots, T-type is arranged in second stator Second stator is divided into the stator tooth b of several bidentate structures by slot, and parallel slot b, adjacent stators tooth is arranged between the bidentate of stator tooth b The adjacent teeth coiling armature winding stator tooth b root coiling excitation winding of b；Rotor is set between two stators and determines with two There are air gap between son, rotor includes non-magnetic ring and several rotor tooths, and rotor tooth is circumferentially uniformly distributed along non-magnetic ring.

Using above-mentioned motor, armature winding is wound on the stator tooth of the first stator and the second stator, single on each stator Phase winding is made of four coils of orthogonal direction.

Compared with prior art, the present invention having the advantage that (1) the motor axial length is small, magnetic circuit is short, magnetic resistance compared with The advantages of small, structure is simple, is provided simultaneously with two kinds of motors of magnetic pass switching electromotor and switched reluctance machines；(2) on rotor both without For permanent magnet also without winding, structure is simple, reliable operation, and the structure of center roller can make motor obtain the smallest rotary inertia and most Excellent radiating condition；(3) the placement space that armature winding is increased on stator, improves the power density of motor；It increases and encourages The placement space of magnetic winding improves the adjustable magnetic range of motor；(4) on each stator single-phase winding by four coils of orthogonal direction Composition, complementarity can offset the harmonic wave of magnetic linkage and counter electromotive force；(5) stator core uses multiple tooth structure, significantly reduces tooth The size of slot torque；(6) several space vectors be can produce when exciting current is separately controlled, be more suitable using faults-tolerant control, Improve the fault-tolerant operation ability of motor.

The invention will be further described with reference to the accompanying drawings of the specification.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of motor of the present invention.

Fig. 2 is the structural schematic diagram of the conducting magnet core unit of the first stator of motor of the present invention.

Fig. 3 is the structural schematic diagram of the second stator core of motor of the present invention.

Fig. 4 is motor rotor construction schematic diagram of the present invention.

Fig. 5 is that angle of rotor of motor of the present invention is β₁When permanent magnet flux path profile.

Fig. 6 is that angle of rotor of motor of the present invention is β₂When permanent magnet flux path profile.

Fig. 7 is the increasing magnetic operation logic figure of motor of the present invention.

Fig. 8 is the degaussing operation logic figure of motor of the present invention.

Specific embodiment

In conjunction with Fig. 1, asymmetric bimorph transducer composite excitation type axial magnetic field flux switch motor, including coaxial mounted first Stator 1, the second stator 2 and rotor 3, the first stator is by each and every one several conducting magnet cores 4 and several permanent magnets 5 tangentially to magnetize It alternately forms, several open slots is uniformly arranged in the circumferential direction on the second stator core 6, it is fixed that rotor 3 is located at the first stator 1 and second Between son 2.

First stator 1, the second stator 2 and rotor 3 are all made of salient-pole structure, are formed by silicon steel plate stacking, 1 He of the first stator Second stator 2 uses dissymmetrical structure, and there are air gaps between the first stator 1 and the second stator 2 respectively for rotor 3.First stator 1, rotor 2 and the second stator 3 are all made of salient-pole structure, are formed by silicon steel plate stacking, the structure of bimorph transducer and single rotor, Ke Yiping Weigh axial magnetic pull.Permanent magnet 5 is only located on the first stator 1, and using parallel permanent magnetism cutting orientation magnetizing structure, adjacent permanent magnet 5 is filled Magnetic direction is opposite.The identical design scheme of two stator structures is compared, permanent magnet and excitation winding are individually placed to two by the present invention It is all relatively good for motor operation heat dissipation and stability on a stator.In addition, single-phase four coil may be implemented in one aspect of the present invention Winding it is complementary, improve counter electromotive force of motor waveform, on the other hand can increase the placement space of excitation winding, improve excitation Effect.

In conjunction with Fig. 2, the conducting magnet core 4 of the first stator 1 uses U-shaped structure, including two stator tooth a4-1, stator tooth a4-1 Between connected by stator yoke 4-2, using parallel slot a4-3.

In conjunction with Fig. 3, the second stator core 6 has been uniformly arranged in the circumferential direction 12 T-slot 6-1, and stator tooth b6-2 is bidentate knot Structure, tooth are equipped with parallel slot b6-3.First stator 1 and the axially symmetric installation of the second stator 2, i.e. parallel slot a4-3 and parallel slot The distribution of b6-3 face, stator tooth cross section is identical and face is distributed.Stator core uses multiple tooth structure, significantly reduces tooth socket The size of torque.

The placement space that armature winding is increased on stator, improves the power density of motor；Increase excitation winding Space is placed, the adjustable magnetic range of motor is improved.It is long to shorten end using centralized winding for armature winding 7 and excitation winding 8 Degree, reduces copper consumption, reduces copper loss.Armature winding 7 is wound on the stator tooth of the first stator 1 and the second stator 2, each Single-phase winding is made of four coils of orthogonal direction on stator, and complementarity can offset the harmonic wave of magnetic linkage and counter electromotive force；Excitation around Group 8 is only located on the second stator 2, is wound on the root of stator tooth b6-2, adjacent exciting current it is contrary.Excitation winding 8 In be passed through electric current, can produce 12 space vectors when being separately controlled, therefore be more suitable using faults-tolerant control.

In conjunction with Fig. 4, rotor 3 has several rotor tooths 3-1, is uniformly arranged on the excircle of non-magnetic ring 3-2, rotor 3 On both without permanent magnet or without winding, structure is simple, reliable operation.It is used that the structure of center roller can make motor obtain the smallest rotation Amount and optimal radiating condition.The structure of center roller, rotor tooth only need to realize the function of magnetic field path, except rotor tooth not Need to be further added by other magnetism guiding access.Rotor tooth axial width influences very little to motor electromagnetic performance, can be rotor thickness That does is relatively thin, and the rotor that materials are few, small in size thus has lesser rotary inertia.Since the winding of the motor is all in stator On, it can allow winding overhang directly using center roller outer stator structure and electric motor end cap contacts, radiating efficiency is relatively high, also not Need to design additional interior cold wind road.

When the exciting current being passed through in excitation winding 8 is zero, air-gap field is only provided by permanent magnet 5, by taking A phase as an example, When the operation of rotor 3 to β₁When angle, permanent magnet flux path is as shown in Figure 5.According to " magnetic resistance minimum principle ", magnetic flux is along arrow Direction penetrates A1 winding；When rotor 3 goes to β₂When angle, permanent magnet flux path is as shown in fig. 6, magnetic flux is worn along the direction of arrow A1 winding out.Magnetic flux numerical value in two kinds of positions, A1 winding linkage is identical but polarity on the contrary, when 3 continuous rotation of rotor, linkage Magnetic flux between positive and negative maximum value mechanical periodicity, the corresponding induced electromotive force for generating amplitude and phase alternation.

When the exciting current being passed through in excitation winding 8 is timing, as shown in fig. 7, short dash line is permanent magnet flux path, length is empty Line is magnetic flux path, and the two direction is consistent, and magnetic flux and permanent magnet flux are collectively formed and enhance air-gap field, motor fortune Row is in increasing magnetic mode；In identical rotor-position, changing exciting current direction, i.e., the exciting current being passed through in excitation winding 8 is negative, As shown in figure 8, exciting current and permanent magnet flux are contrary, the two is collectively formed and weakens air-gap field, and motor operation is in going Magnetic mode.By adjusting direction and the size of exciting current, excitation field can be changed, realize the tune of armature winding magnetic linkage size Section, so that motor is run in wide Constant-power speed range.