阅读说明：本技术 一种错位双转子磁通切换型永磁电机及发电设备 (A kind of dislocation birotor Magneticflux-switching type magneto and generating equipment ) 是由 赵文良 虞铭杰 于 2019-09-12 设计创作，主要内容包括：本公开提供了一种错位双转子磁通切换型永磁电机及发电设备。其中,错位双转子磁通切换型永磁电机包括：定子,其包括多个定子H型铁心单元、定子绕组和永磁体；所述定子绕组采用相组线圈集中式绕组,所述组线圈集中式绕组分别位于定子内外两侧,可独立控制；所述永磁体内置于相邻两个定子H型铁心单元之间；双转子,其包括分别位于定子内侧和外侧的内转子和外转子,内转子和外转子周向互错一个转子齿部弧宽。本公开解决了现有磁通切换型永磁电机的转矩密度提升和转矩脉动抑制间存在的不协调问题,大幅提高了转矩密度、运行效率以及故障容错能力,大幅度降低齿槽转矩和转矩脉动,减少了运行时的振动和噪声。(Present disclose provides a kind of dislocation birotor Magneticflux-switching type magneto and generating equipments.Wherein, dislocation birotor Magneticflux-switching type magneto includes: stator comprising multiple stator H-type core units, stator winding and permanent magnet；The stator winding uses phase group coil centralization winding, and described group of coil centralization winding is located inside and outside stator, can independent control；The permanent magnet is built between two neighboring stator H-type core unit；Birotor comprising be located at the internal rotor and outer rotor of stator inner side and outer side, internal rotor and the circumferential mutually wrong rotor teeth portion arc of outer rotor are wide.The torque density that the disclosure solves existing Magneticflux-switching type magneto promotes the existing problem of disharmony between Torque Ripple Reduction, torque density, operational efficiency and failure tolerant ability greatly improved, cogging torque and torque pulsation is greatly lowered, reduces vibration when operation and noise.)

1. a kind of dislocation birotor Magneticflux-switching type magneto characterized by comprising

Stator comprising multiple stator H-type core units, stator winding and permanent magnet；The stator winding uses phase group coil Centralized winding, phase group coil centralization winding are located inside and outside stator, can independent control；The permanent magnet is built in Between two neighboring stator H-type core unit；

Birotor comprising be located at the internal rotor and outer rotor of stator inner side and outer side, internal rotor and outer rotor are circumferentially mutual A wrong rotor teeth portion arc is wide.

2. dislocation birotor Magneticflux-switching type magneto as described in claim 1, which is characterized in that the birotor is same Heart tube-in-tube structure takes the wide mode of rotor sector that is staggered to assemble, and connects internal rotor and outer rotor by birotor connector, And internal rotor is identical with rotation speed with the direction of rotation of outer rotor.

3. dislocation birotor Magneticflux-switching type magneto as described in claim 1, which is characterized in that each stator H-type iron The opening at heart unit both ends is radially respectively directed to internal rotor and outer rotor, and the side of stator H-type core unit and permanent magnetism are shown consideration for It closes.

4. dislocation birotor Magneticflux-switching type magneto as described in claim 1, which is characterized in that stator H-type iron core list Member includes H-type core unit in alternate H-type core unit and phase, between alternate H-type core unit adjacent in a circumferential direction It is arranged at intervals with H-type core unit in several phases.

5. dislocation birotor Magneticflux-switching type magneto as claimed in claim 4, which is characterized in that outside the internal rotor Side is provided with the internal rotor slot being equally spaced, and the medial surface of the outer rotor is provided with the outer rotor slot being equally spaced；Alternate H-type iron Heart unit sector is wide, H-type core unit sector is wide equal with permanent magnet arc width in phase.

6. dislocation birotor Magneticflux-switching type magneto as described in claim 1, which is characterized in that the permanent magnet fills Magnetic direction is that circumference is tangential, and it is close to increase air-gap flux on the contrary, to generate poly- magnetic effect for two pieces of adjacent permanent magnet magnetizing directions Degree.

7. dislocation birotor Magneticflux-switching type magneto as described in claim 1, which is characterized in that phase group coil centralization Each group of three-phase windings of winding successively differ 120 degree of arrangements with ABC three-phase, and every phase winding coil containing there are six wraps respectively Six sandwich structures in a phase of stator；The sandwich structure is the knot being made of stator tooth-permanent magnet-stator tooth Structure.

8. dislocation birotor Magneticflux-switching type magneto as described in claim 1, which is characterized in that the permanent magnet is fan The column structure of shape bottom surface or rectangular bottom surface is in spoke-like arrangement.

9. dislocation birotor Magneticflux-switching type magneto as described in claim 1, which is characterized in that stator core, outer turn Son and internal rotor are formed by silicon steel plate stacking.

10. a kind of generating equipment, which is characterized in that including the birotor magnetic flux that misplaces as claimed in any one of claims 1-9 wherein Switch type magneto.

Technical field

The disclosure belong to design of electrical motor manufacturing field more particularly to a kind of dislocation birotor Magneticflux-switching type magneto and Generating equipment.

Background technique

Only there is provided background technical informations relevant to the disclosure for the statement of this part, it is not necessary to so constitute first skill Art.

As the influence of global energy crisis is growing, energy-saving efficient motor is received significant attention.Wherein magneto The advantages that due to its high power density, high efficiency, increasingly by the attention of industry.Riding position based on permanent magnet, forever Magneto is divided into rotor permanent magnet type motor and stator permanent magnetic type electric.Wherein rotor permanent magnet type motor is broadly divided into surface-mount type and interior Formula two types are set, occupy leading position in most industrial application at present.However the armature-reaction magnetic of rotor permanent magnet type motor Field is directly by rotor permanent magnet, and in the operating status of low speed high torque, permanent magnet is faced with very high irreversible demagnetization wind Danger.On the other hand, rotor permanent magnet type motor is located on rotor due to permanent magnet, and heat dissipation is more difficult, and the temperature rise of rotor is Limit one of the principal element of the type motor overload ability.Opposite, the armature reacting field of stator permanent magnetic type electric is not straight Permanent magnet was connected, and permanent magnet is located on static stator, installation and heat dissipation are convenient, and can be convenient outer on stator Add pressure cooling system, therefore stator permanent magnetic type electric irreversible demagnetization risk is small, overload capacity is big.Magnetic pass switching electromotor is made It is a kind of preferred embodiment for substituting rotor permanent magnet type motor for one of stator permanent magnetic type electric.Traditional Magneticflux-switching type is forever The stator of magneto be usually successively close to by multiple U-shaped core units it is assembled, between every two pieces of U-shaped core units be embedded with one Block permanent magnet, rotor are only made of silicon steel plate stacking, each one that two concentration armature winding is placed in the slot of U-shaped core unit Coil side, structure is simple, reliable for operation.

In addition, the winding of Magneticflux-switching type magneto is with uniformity and complementary, offset each other each coil Even harmonics component in counter electromotive force and permanent magnet flux linkage, the magnetic linkage and counter electromotive force of available height sine.Meanwhile magnetic Logical switch type magneto uses spoke type magnet structure, the higher air gap flux density that can produce, to obtain phase To higher torque (power) density, but at the same time, such motor has the shortcomings that high cogging torque, high torque (HT) pulsation, can not Generate vibration and noise with avoiding.Inventors have found that using traditional method, for example, inclination permanent magnet and optimization teeth portion shape or Using complicated control algolithm, cogging torque and torque pulsation can be reduced to a certain extent, but these methods are also inevitable It causes motor performance to decline and increases manufacture difficulty in ground.

Summary of the invention

In order to solve not assist existing for the torque density promotion and Torque Ripple Reduction of existing Magneticflux-switching type magneto Tune problem, the disclosure provide a kind of dislocation birotor Magneticflux-switching type magneto, and stator passes through phase group coil centralization winding Realize modularized design, the wide realization magnetic flux alternating polymerization of birotor one rotor teeth portion arc of circumferential mutually mistake and Torque Ripple Reduction effect Fruit, inside winding and outside winding can independent control, make motor that there is high power density, strong overload capacity, Low gullet torque is low The advantages that torque pulsation and suitable modular manufacturing.

To achieve the goals above, the disclosure adopts the following technical scheme that

A kind of dislocation birotor Magneticflux-switching type magneto, comprising:

Stator comprising multiple stator H-type core units, stator winding and permanent magnet；The stator winding uses phase group Coil centralization winding, phase group coil centralization winding are located inside and outside stator, can independent control；In the permanent magnet It is placed between two neighboring stator H-type core unit；

Birotor comprising be located at the internal rotor and outer rotor of stator inner side and outer side, internal rotor and outer rotor week It is wide to mutual wrong rotor teeth portion arc.

As an implementation, the birotor is concentric tube-in-tube structure, takes the wide mode of rotor sector that is staggered Assembly connects internal rotor and outer rotor, and the direction of rotation and rotation speed of internal rotor and outer rotor by birotor connector It is identical.

When the magnetic field that the energization of certain phase armature winding of stator side generates is consistent with the permanent magnet direction of the phase, magnetic is synthesized Field is enhanced magnetic field, and the rotor pole near the phase position is promoted to be aligned with the stator teeth of the phase.When rotor pole and stator tooth When portion is aligned, which starts reversely, and resultant magnetic field is attenuated type magnetic field, while next resultant magnetic field got along is enhanced Magnetic field promotes rotor pole to be aligned with next phase stator teeth.By this method, rotor is promoted constantly to rotate again and again.

Compared to traditional Magneticflux-switching type magneto, greatly improved torque (power) density, operational efficiency and Failure tolerant ability, is greatly lowered cogging torque and torque pulsation, reduces vibration when operation and noise.

As an implementation, the opening at each stator H-type core unit both ends be radially respectively directed to internal rotor and The side of outer rotor, stator H-type core unit is bonded with permanent magnet.

As an implementation, stator H-type core unit includes H-type core unit in alternate H-type core unit and phase, H-type core unit in several phases is arranged at intervals between alternate H-type core unit adjacent in a circumferential direction.

As an implementation, the lateral surface of the internal rotor is provided with the internal rotor slot being equally spaced, the outer rotor Medial surface be provided with the outer rotor slot being equally spaced；Alternate H-type core unit sector is wide, in phase H-type core unit sector it is wide and Permanent magnet arc width is equal.

Wherein, alternate H-type core unit sector is wide, H-type core unit sector is wide in phase, permanent magnet arc width is θ (electric angle Degree is 90 degree).

As an implementation, the magnetizing direction of the permanent magnet is that circumference is tangential, and two pieces of adjacent permanent magnets magnetize It is contrary, to generate poly- magnetic effect, increase air gap flux density.

As an implementation, each group of three-phase windings of phase group coil centralization winding are successively differed with ABC three-phase 120 degree of arrangements, every phase winding contain there are six coil, six sandwich structures being paperwrapped in a phase of stator respectively；Described three Mingzhi's structure is the structure being made of stator tooth-permanent magnet-stator tooth.

As an implementation, the permanent magnet is the column structure of fan-shaped bottom surface or rectangular bottom surface, is arranged in spoke-like Column.

As an implementation, stator core, outer rotor and internal rotor are formed by silicon steel plate stacking.

The second aspect of the disclosure provides a kind of generating equipment.

A kind of generating equipment, including dislocation birotor Magneticflux-switching type magneto described above.

The beneficial effect of the disclosure is:

1) stator uses phase group coil centralization winding, improves winding coefficient and reduces End winding, significantly improves torque Density simultaneously is conducive to realize modularized design；

2) dual-rotor structure wide using a circumferential mutually wrong rotor teeth portion arc, realizes that magnetic flux is alternately poly- in double air gaps phase group It closes, improves torque density, and effectively torque pulsation inhibited by the torque component superposition that double air gaps generate；

3) inside winding and outside winding can independent control, access two inverters, respective independent operating, thus obtain compared with High failure tolerant ability.

4) the dislocation birotor Magneticflux-switching type magneto of the disclosure is due to inside winding and the energization generation of outside winding Magnetic direction it is vertical with permanent magnet magnetizing direction, so the motor have under heavy loading to the irreversible demagnetization of permanent magnet it is very high Ability to bear.

5) stator core of the dislocation birotor Magneticflux-switching type magneto of the disclosure is by H-type core unit and sector (or rectangle) column spoke type magnet structure assembles, and each unit has axial hole, fixes for mounting bracket, favorably It radiates in stator core and armature winding.

Detailed description of the invention

The Figure of description for constituting a part of this disclosure is used to provide further understanding of the disclosure, and the disclosure is shown Meaning property embodiment and its explanation do not constitute the improper restriction to the disclosure for explaining the disclosure.

Fig. 1 is the dislocation birotor Magneticflux-switching type magneto overall structure diagram of the embodiment of the present disclosure.

Fig. 2 is the structure expanded schematic diagram of the dislocation birotor Magneticflux-switching type magneto of the embodiment of the present disclosure.

Fig. 3 is the schematic cross-section of the dislocation birotor Magneticflux-switching type magneto of the embodiment of the present disclosure.

Fig. 4 is the phase group coil centralization winding arrangement schematic diagram of the embodiment of the present disclosure.

Fig. 5 is the dislocation dual-rotor structure schematic diagram of the embodiment of the present disclosure.

Fig. 6 (a) is the stator core structure schematic diagram of the embodiment of the present disclosure.

Fig. 6 (b) is a kind of H-type core unit structural schematic diagram of the embodiment of the present disclosure.

Fig. 6 (c) is another H-type core unit structural schematic diagram of the embodiment of the present disclosure.

Fig. 7 (a) is the stator permanent magnet structural schematic diagram of the embodiment of the present disclosure.

Fig. 7 (b) is the stator permanent magnet cellular construction of the embodiment of the present disclosure.

Fig. 8 (a) is the magnetic circuit schematic diagram of the outer rotor face stator tooth of the embodiment of the present disclosure.

Fig. 8 (b) is that the rotor of the embodiment of the present disclosure is rotated by 90 ° the magnetic circuit schematic diagram of electrical angle.

Fig. 8 (c) is the magnetic circuit schematic diagram of the rotor rotation 180 degree electrical angle of the embodiment of the present disclosure.

Specific embodiment

The disclosure is described further with embodiment with reference to the accompanying drawing.

It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the disclosure.Unless another It indicates, all technical and scientific terms used herein has usual with disclosure person of an ordinary skill in the technical field The identical meanings of understanding.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the disclosure.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

In the disclosure, term for example "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", " side ", The orientation or positional relationship of the instructions such as "bottom" is to be based on the orientation or positional relationship shown in the drawings, only to facilitate describing this public affairs The relative for opening each component or component structure relationship and determination, not refers in particular to either component or element in the disclosure, cannot understand For the limitation to the disclosure.

In the disclosure, term such as " affixed ", " connected ", " connection " be shall be understood in a broad sense, and indicate may be a fixed connection, It is also possible to be integrally connected or is detachably connected；It can be directly connected, it can also be indirectly connected through an intermediary.For The related scientific research of this field or technical staff can determine the concrete meaning of above-mentioned term in the disclosure as the case may be, It should not be understood as the limitation to the disclosure.

As shown in Figure 1, a kind of dislocation birotor Magneticflux-switching type magneto of the present embodiment, comprising:

Stator includes multiple H-type core units 4, stator winding 5, permanent magnet 2, the stator winding include inside winding and Outside winding, the inside winding and outside winding are all made of phase group coil centralization winding；The permanent magnet is built in adjacent Between two stator H-type core units；

Birotor comprising be located at the internal rotor 3 and outer rotor 1, internal rotor and outer rotor of stator inner side and outer side A circumferential mutually wrong rotor teeth portion arc is wide.

Wherein, the stator core is made of multiple H-type core units 4；The opening edge at each 4 both ends of H-type core unit Radial direction is respectively directed to internal rotor and outer rotor, and the side of H-type core unit 4 is bonded with permanent magnet 2.

As shown in Fig. 2, permanent magnet is built between two H-type core units 4.Outer rotor and internal rotor are located at stator Outside and inside.The armature winding facies tract distribution of motor stator is as shown in Figure 4.Several stator slots are provided on stator. Such as: number of stator slots 36, rotor number of poles are 37.The armature winding coil of stator is arranged in stator slot.The internal rotor Lateral surface is provided with the internal rotor slot being equally spaced, and the medial surface of the outer rotor is provided with the outer rotor slot being equally spaced；It is described outer Rotor sector is wide, internal rotor sector is wide, permanent magnet arc is wide and stator phase inside groove arc width is equal.Outer rotor slot arc is wide, internal rotor Slot arc is wide equal with H-type core unit arc width in stator phase.Alternate H-type core unit sector is wide, H-type core unit sector in phase It is wide equal with permanent magnet arc width.

The winding that stator slot is built-in with is divided into outside winding and inside winding.The winding using phase group coil centralization around Group mode is arranged.The outside winding and inside winding are non-same-phase winding, i.e., the electric current of same phase is non-same in the winding of two sides Phase, double winding can respective independent controls.As shown in figure 3, phase group is respectively set in two sides inside and outside motor stator is divided into Coil centralization winding.For the phase group coil centralization winding of side, circumferentially it is divided into 2 phase groups, each phase group is three Phase winding, the in-phase coil series connection of 2 phase groups；One phase winding of each phase group includes 6 coils, and series connection surrounds 6 respectively In " sandwich " structure of " H-type core unit tooth-permanent magnet-H-type core unit tooth ".

Misconstruction: referring to Fig. 5, the dual-rotor structure of this motor is rigidly connected by outer rotor and internal rotor by connector It constitutes.Inner and outer Rotator carries out assembly connection with the θ arc that is staggered wide (electrical angle is 90 degree).Identical number is uniformly provided on each rotor The wide fan groove of 3 θ arcs of amount, so that rotor sector width is θ.

Referring to Fig. 6 (a), stator core includes the H-type core unit of 2 kinds of structures, respectively alternate H-type iron core 4.1, in phase H-type iron core group 4.2.H-type iron core group 4.2 includes along the circumferential direction evenly arranged 5 alternate H-type iron cores in phase.This motor Stator core includes 6 along the circumferential direction evenly arranged alternate H-type iron cores；H in phase is provided between two alternate H-type iron cores Iron-core group.H-type core unit in same phase is evenly distributed with interval θ radian.Each core unit opening is directed radially towards Inner and outer Rotator, core unit side are tightly bonded with permanent magnet 3.

Referring to Fig. 6 (b), the radical length of alternate H-type core unit 4.1 and H-type iron core group 4.2, permanent magnet 3 in phase are radial It is equal in length as h₁, and meet relationship h₁₌h₃₊h₄.The alternate 4.1 wide θ of teeth portion arc of the H-type core unit and wide β of slot arc, entire list The relationship of first wide γ of arc meetsThe θ of γ=2+β.

Referring to Fig. 6 (c), H-type core unit structure size is identical as alternate H-type core unit on radially, axially in phase, The wide θ of stator teeth arc meets the θ of relationship α=3 in a circumferential direction.Stator core axial length l and stator radical length h₁It is non- Key parameter is determined according to power of motor Size Equation.Stator core yoke portion thickness h₂It is fitted according to FEM Numerical Simulation Work as selection.

Referring to Fig. 7 (a), this motor includes the permanent magnet of 36 circumference cutting orientation magnetizings, and along the circumferential direction uniformly arrangement, adjacent Two pieces of permanent magnet magnetizing directions are on the contrary, to have poly- magnetic effect.Permanent magnet is located among two stator H-type iron cores such as Fig. 6 (a), it is tightly bonded with H-type core unit side.If the permanent magnet unit of Fig. 7 (b) is fan-shaped column structure, arc width is θ, axis It is identical as the stator core of such as Fig. 6 (b) to length and radical length.

The working principle of the dislocation birotor Magneticflux-switching type magneto of the present embodiment are as follows:

After electrical power, the interior outside double winding of stator generates the rotation of two phase phase differences 90 degree (electrical angle) respectively Magnetomotive force simultaneously circumferentially rotates, the magnetic field that is formed when somewhere stator winding and when permanent magnet magnetic field direction is consistent at this, synthesizes Magnetic field is enhanced magnetic field, promotes rotor pole to be aligned with adjacent stators teeth portion and rotates.It, should after rotor pole is aligned with stator tooth Locate current direction on the contrary, armature-reaction is weak magnetic, weakens resultant magnetic field, while the armature-reaction at the armature winding of adjacent phase is Increase magnetic, rotor pole is promoted to be aligned with the stator tooth near the phase.By this method, rotor is promoted constantly to rotate again and again.

The case where considering a certain phase group is right against the phase when the rotor pole in outside, which is rotated to, to be aligned with stator teeth The magnetic flux almost all that permanent magnet generates passes through outside air gap, greatly reinforcement air gap flux density.In 90 degree of (electric angles later Degree) in rotary course, pass through two air gaps when permanent magnet magnetic is colluded.After being rotated by 90 ° (electrical angle), internal rotor pole is aligned in Stator teeth, also almost all passes through inside air gap to the magnetic flux that permanent magnet generates.Therefore traditional magnetic flux of the present invention and single air gap Switch type magneto is compared, and the air gap flux density that height improves can be obtained, by increasing an outer rotor come rationally benefit With the leakage field in traditional motor stator yoke portion, to generate higher synthesis torque.And since the present embodiment takes birotor The design of dislocation, so that when no power, the magnetic field energy of two sides air gap is misphase position with the variation tendency of rotor position angle, It cancels out each other to play the role of cogging torque.Permanent magnet magnetic flux checker operation, inside and outside stator winding generate Counter electromotive force phase, differenceElectrical angle forms two sets of independent threephase armature windings in this way.

Specifically operation logic, referring to Fig. 8:

Adjacent two pieces of permanent magnet magnetizing directions in one phase of motor stator are on the contrary, what such permanent magnet 6 was generated with permanent magnet 12 Magnetomotive force is parallel with one another, has poly- magnetic effect, to obtain bigger air gap flux density.Referring to Fig. 8 (a), outer rotor at this time Tooth 9 is in the position of face outer stator tooth 10, the magnetic line of force generated jointly by permanent magnet 6 and permanent magnet 12, from permanent magnet 6 with Permanent magnet 12 sets out, and by stator iron yoke 13, stator tooth 10 polymerize on the outside, by air gap 7- on the outside of outer stator tooth 10- outside Air gap 7- outer stator tooth 10 on the outside of rotor tooth 9- outer rotor iron yoke 8- outer rotor teeth 9-, last part returns to permanent magnet 12. The permanent-magnet magnetic flux in stator coil 11 is positive to maximum value at this time.

Referring to Fig. 8 (b), rotor has rotated 90 degree of electrical angles, and internal rotor tooth 17 is in face inside stator tooth 18 at this time Position.The magnetic line of force generated jointly by permanent magnet 6 and permanent magnet 12, from permanent magnet 6 and permanent magnet 12s, by stator iron yoke 13, in inside, stator tooth 18 polymerize, by air gap 15- internal rotor tooth 17- internal rotor iron yoke 16- on the inside of inside stator tooth 18- Air gap 15- inside stator tooth 18 on the inside of rotor tooth 17-, last part returns to permanent magnet 6.Permanent magnetism in stator coil 11 at this time Magnetic flux is zero.Permanent magnet flux in stator coil 14 reaches maximum.

Referring to Fig. 8 (c), rotor has rotated 180 degree electrical angle, and outer rotor teeth 9 is in face outer stator tooth 10 at this time Position.By the magnetic line of force that permanent magnet 6 and permanent magnet 12 generate jointly pass through with the symmetrical magnetic circuit of Fig. 8 (a), and in stator coil 11 Permanent-magnet magnetic flux directions be maximum negative value.Rotor continues to rotate, and again and again, the circuit that the magnetic line of force passes through alternately is cut It changes, there are same magnetic flux handoff procedures in lower rotor part circuit.Magnetic flux switching principle in this way, phase group coil centralization around The counter electromotive force of the alternately height sine of variation is induced in group.

Internal rotor and outer rotor are staggered by the disclosure in assembly, and θ arc is wide (electrical angle is 90 degree), and reasonable pole slot cooperates Reasonable the constraint relationship between relationship and stator H-type core dimensions, magnet size and birotor size, so that permanent magnet flux In one cycle alternately through interior outside magnetic circuit, air gap area is increased, improves torque density.Stator winding uses phase group line Centralized winding is enclosed, winding coefficient is improved and reduces End winding, realizes modularized design, fault-tolerant ability is improved and torque is close Degree.Moreover, misconstruction make inside and outside the counter electromotive force that incudes differ 90 degree of electrical angles in phase, therefore can be with Interior outside armature winding is connect on the inverter of two phase differences, 90 degree of electrical angles, thus improves failure tolerant ability.More into One step, this dual-rotor structure for cleverly misplacing 90 degree of electrical angles compares traditional single rotor Magneticflux-switching type Permanent Magnet and Electric Cogging torque and torque pulsation can be significantly reduced in machine, improves torque density.

The foregoing is merely preferred embodiment of the present disclosure, are not limited to the disclosure, for the skill of this field For art personnel, the disclosure can have various modifications and variations.It is all within the spirit and principle of the disclosure, it is made any to repair Change, equivalent replacement, improvement etc., should be included within the protection scope of the disclosure.