WO2024021238A1 - Harmonic magnetic field driven electrically excited motor - Google Patents

Harmonic magnetic field driven electrically excited motor Download PDF

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WO2024021238A1
WO2024021238A1 PCT/CN2022/117670 CN2022117670W WO2024021238A1 WO 2024021238 A1 WO2024021238 A1 WO 2024021238A1 CN 2022117670 W CN2022117670 W CN 2022117670W WO 2024021238 A1 WO2024021238 A1 WO 2024021238A1
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Prior art keywords
stator
winding
magnetic field
pole
rotor
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PCT/CN2022/117670
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French (fr)
Chinese (zh)
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周建民
许恒帅
贺海亮
刘培海
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宁波恒帅股份有限公司
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Publication of WO2024021238A1 publication Critical patent/WO2024021238A1/en

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    • 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
    • H02K3/522Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/12Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/04Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28Layout of windings or of connections between windings
    • 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
    • H02K3/48Fastening of windings on the stator or rotor structure in slots
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2201/00Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/03Machines characterised by aspects of the air-gap between rotor and stator
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K2213/00Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to a motor, in particular to a harmonic magnetic field driven electric excitation motor.
  • the technical problem to be solved by the present invention is to provide a harmonic magnetic field driven electric excitation motor in order to solve the above-mentioned shortcomings of the prior art, so that it can reduce the volume, increase the power density, and achieve the effect of energy saving.
  • a harmonic magnetic field driven electric excitation motor which includes: a rotor assembly, a stator assembly, a control module and a wire harness.
  • the wire harness is connected to the control module through welding, and the control module is connected through positioning The column and the elastic fixing card are fixed to the stator assembly.
  • the wire harness passes through the radial hole provided in the stator assembly and is led out from the axial hole.
  • the bearing provided in the stator assembly supports and positions the rotor assembly.
  • the harmonic magnetic field drives the electric excitation.
  • the energized rotor assembly of the motor rotates in the circumferential direction.
  • stator winding is divided into m phases according to the set connection rules
  • the rotor pole shoe magnetic poles are arranged sequentially in the order of N pole and S pole in the circumferential direction.
  • the number of rotor pole shoe magnetic pole pairs formed is Pr;
  • the motor air gap is formed within the circumferential 360° mechanical space between the stator and the rotor.
  • harmonic magnetic field driven electric excitation motor of the present invention will be further described:
  • the necessary condition for the rotation of the motor rotor is that the number of magnetic pole pairs generated by the stator winding in the motor air gap is equal to the number of magnetic pole pairs in the rotor pole shoes;
  • the motor will output stable electromagnetic torque only when the number of magnetic pole pairs formed by the rotor pole shoes and the stator coil are equal;
  • the number of pole pairs Pr of the rotor pole shoes of the harmonic magnetic field driven electric excitation motor must satisfy:
  • Each wire package has 2 component sides, and each stator slot is a double-layer winding. Two components are placed on the upper and lower layers or on the left and right sides. That is, each stator slot places the component sides of two different wire packages.
  • Each phase winding contains k wire packages, and the motor is divided into m phases.
  • the control method of harmonic magnetic field driven electric excitation motor suitable for BLDC control method and PMSM control method, where BLDC is a square wave voltage (current) drive method and PMSM is a sine wave voltage (current) drive method.
  • the left side of the yoke, the right side of the yoke, the upper end face of the yoke and the lower end face of the yoke provided on the pole piece are all insulated to play an insulating role with the excitation winding.
  • the left side of the yoke, the right side of the yoke, the upper end face of the yoke and the lower end face of the yoke provided with the pole piece are respectively in contact with the left side of the excitation winding, the right side of the excitation winding and the top end of the excitation winding.
  • the excitation winding can control the direction of the excitation current by setting the winding method to realize that the magnetic poles of the 26 pole pieces are alternately arranged and distributed according to N poles and S poles.
  • the motor shaft of the stator assembly is provided with a positive conductive ring and a negative conductive ring
  • the rotor assembly is provided with a positive conductive piece and a negative conductive piece
  • the positive and negative poles of the power supply pass through the positive conductive ring, the positive conductive piece and the negative conductive ring respectively.
  • the negative conductive piece supplies power to the excitation winding.
  • an insulating ring is provided between the positive conductive ring, the negative conductive ring and the motor shaft to play the role of insulation.
  • a radial hole and an axial hole are provided on the motor shaft of the stator assembly, and the wire harness passes through the radial hole and is led out from the axial hole to realize the lead-out of the wire harness.
  • elastic fixing clips and positioning posts are provided on the stator assembly to position and fix the control module, which can improve the positioning accuracy of the control module and make its fixing more firm and reliable.
  • the harmonic magnetic field driven electric excitation motor can be designed with an outer stator and inner rotor structure according to different uses, which can also achieve the same performance and effect as the outer rotor and inner stator structure in the embodiment of this patent.
  • the advantage of the present invention is that the harmonic magnetic field driven electric excitation motor greatly increases the number of cogging torque fluctuation cycles through the set combination of the number of stator slots and the number of magnetic poles of the rotor pole shoes, and can reduce harmonics. While the magnetic field drives the air gap value of the electric excitation motor, it maintains or reduces the cogging torque fluctuation amplitude of the harmonic magnetic field-driven electric excitation motor. Through the set stator winding method, the number of pole pairs of the harmonic magnetic field generated by the stator is equal to that of the rotor.
  • the number of pairs of magnetic poles in the pole shoes forms a stable electromagnetic torque output, which can use a smaller harmonic magnetic field to drive the air gap of the electric excitation motor, greatly increasing the strength of the air gap magnetic field, so that the output power of the electric excitation motor driven by the harmonic magnetic field is increased proportionally, and the harmonic
  • the power volume density of magnetic field-driven electric excitation motors has also increased proportionally.
  • the volume of harmonic magnetic field driven electric excitation motors is more than doubled, which means that the weight of harmonic magnetic field driven motors is also more than doubled, which can significantly save the cost of motor materials. , especially the cost of rare earth permanent magnet materials, has greatly enhanced the product's market competitiveness.
  • This harmonic magnetic field drives the electric excitation motor structure, which can match the traditional BLDC and PMSM motor control modules, and has strong versatility in control.
  • Figure 1 is a perspective view of a harmonic magnetic field driven electric excitation motor according to an embodiment of the present invention.
  • Figure 2 is an exploded schematic diagram of a harmonic magnetic field driven electric excitation motor according to an embodiment of the present invention.
  • Figure 3 is a schematic structural diagram of a harmonic magnetic field driven electric excitation motor according to an embodiment of the present invention.
  • Figure 4a is a partial view of the A-A cross-section in Figure 3 .
  • Figure 4b is a partial view of the B-B cross section in Figure 3 .
  • Figure 5a is a partial enlarged view of F in Figure 4a.
  • Figure 5b is a partial enlarged view of P in Figure 4b.
  • Figure 6 is an exploded schematic view of the rotor assembly according to the embodiment of the present invention.
  • Figure 7 is a partially rotated enlarged view of W in Figure 6.
  • Figure 8 is a perspective view of the field winding according to the embodiment of the present invention.
  • FIG. 9 is an exploded schematic diagram of the stator assembly according to the embodiment of the present invention.
  • Figure 10 is a cross-sectional view of the motor shaft according to the embodiment of the present invention.
  • a harmonic magnetic field driven electric excitation motor includes a rotor assembly 1, a stator assembly 2, a control module 3 and a wire harness 4.
  • torque is output through the rotation of the rotor assembly 1, thereby converting electrical energy into mechanical energy.
  • the rotor assembly 1 is composed of a casing 11 , a rotor 12 , an excitation winding 13 , a positive conductive sheet 14 and a negative conductive sheet 15 .
  • the rotor 12 is bonded to the inner circumferential surface of the casing 11 through adhesive.
  • the rotor 12 is evenly provided with 20 pole pieces (10 pairs of poles) on the inner circle.
  • the left side 1202 of the yoke, the right side 1203 of the yoke, the upper end face 1204 and the lower end face 1204 of the yoke provided in the pole piece 1201 are all insulated to play an insulating role with the excitation winding 13 .
  • the yoke left side 1202, the yoke right side 1203, the yoke upper end face 1204 and the yoke lower end face 1204 provided in the pole piece 1201 are respectively connected with the excitation winding left side 1301 and the excitation winding right side 1302 of the excitation winding 13.
  • the upper side of the field winding 1303 and the lower side of the field winding 1304 cooperate to position the field winding 13 in the radial and axial directions.
  • the excitation winding 13 can control the direction of the excitation current by setting the winding method to realize that the magnetic poles of the 20 pole pieces 1201 are alternately arranged and distributed in N poles and S poles.
  • the motor shaft 211 of the stator assembly is provided with a positive conductive ring 29 and a negative conductive ring 2010.
  • the rotor assembly is provided with a positive conductive sheet 14 and a negative conductive sheet 15.
  • the positive and negative poles of the power supply pass through the positive conductive ring 29 and the positive conductive sheet 14 and 15 respectively.
  • the negative conductive ring 2010 and the negative conductive sheet 15 provide power to the above-mentioned excitation winding 13 .
  • An insulating ring 2011 is provided between the positive conductive ring 29 and the negative conductive ring 2010 and the motor shaft 211 to provide insulation.
  • the stator 21 of the stator assembly 2 is evenly provided with 15 tooth slots on its outer circle, the number of pole pairs of each phase wire package is 5, and the number of each phase wire package is 5.
  • Each wire package has 2 component sides, and each stator slot is designed with double-layer winding, with 2 component sides placed on the upper and lower layers or on the left and right sides.
  • the number of stator slots is equal to the total number of wire packages.
  • the outer circle of the stator assembly 2 and the pole piece 1201 of the rotor assembly 1 form a harmonic magnetic field driving electric excitation motor air gap L, which can be reduced due to the adoption of the technical solution of the present invention.
  • the wire harness 4 and the control module 3 are connected by welding.
  • the stator assembly 2 is provided with elastic fixing clips 212 and positioning posts 213 to position and fix the control module 3, making the fixation of the control module 3 more firm and reliable.
  • the motor shaft 211 of the stator assembly 2 is provided with radial holes 2111, 2113, 2114 and an axial hole 2112 to facilitate the wire harness 4 to pass through the radial holes 2111, 2113, 2114 and the axial hole 2112 to realize the wire harness 4 of elicitation.
  • the bearings 23 and 28 provided in the stator assembly 2 are fixed in the casing 11 of the rotor assembly 1 and play a role in supporting and positioning the rotor assembly 1.
  • the harmonic magnetic field drives the electric excitation motor
  • the rotor assembly can rotate in a circular motion. direction of rotation.
  • the stator assembly 2 is provided with stop rings 25 and 26 to fix the bearings 23 and 28 respectively to achieve axial limitation of the rotor assembly 1, and the wear-resistant gaskets 24 and 27 are provided to reduce friction. .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

A harmonic magnetic field driven electrically excited motor, comprising: A. a stator is provided with a plurality of slots, and the number of slots is Z; B. in a circumferential 360° mechanical space of the stator, a stator winding is divided into m phases according to a set connection rule; C. in a stator assembly provided with the stator winding, any phase of winding of the stator assembly is energized with a direct current constant current, and in the circumferential 360° mechanical space of the stator, the number of phase winding magnetic field pole pairs formed is Pm; D. the number of coils comprised in each phase of stator winding is k=n×Pm(n=1, 2, 3...), and a double-layer winding is used; E. magnetic poles of rotor pole shoes are sequentially arranged in the circumferential direction according to the N-pole and S-pole sequence by means of an excitation winding, and in a circumferential 360° mechanical space of a rotor, the number of magnetic pole pairs of the rotor pole shoes formed is Pr; and F. a motor air gap is formed within a circumferential 360° mechanical space between the stator and the rotor, and the number Pr of magnetic pole pairs of the rotor pole shoes needs to satisfy: Pr=Z±Pm, wherein the number Z of the slots of the stator satisfies Z=m×k.

Description

谐波磁场驱动电励磁电机Harmonic magnetic field driven electric excitation motor 技术领域Technical field
本发明涉及一种电机,特别涉及谐波磁场驱动电励磁电机。The present invention relates to a motor, in particular to a harmonic magnetic field driven electric excitation motor.
背景技术Background technique
电机作为将电能转化为旋转机械能的装置,在我们的社会生产和生活中起着极为重要的作用。传统电励磁电机控制方便、装配性好,控制励磁电流就可控制磁场强度,达到调速的目的,可靠性高,通常用于大功率场合,其结构相对复杂,生产工艺严密,经久耐用,是电励磁电机的优势。尽管电励磁电机有诸多优势,然而相较于永磁电机的节能效果及生产成本和外形体积还是有所逊色。因此,迫切需要设计一种谐波磁场驱动电励磁电机。As a device that converts electrical energy into rotating mechanical energy, the motor plays an extremely important role in our social production and life. Traditional electric excitation motors are easy to control and easy to assemble. By controlling the excitation current, the magnetic field intensity can be controlled to achieve the purpose of speed regulation. They are highly reliable and are usually used in high-power situations. Their structures are relatively complex, their production processes are rigorous, and they are durable. Advantages of Electrically Excited Motors. Although electric excitation motors have many advantages, they are still inferior to permanent magnet motors in terms of energy-saving effect, production cost and overall size. Therefore, there is an urgent need to design a harmonic magnetic field driven electric excitation motor.
发明内容Contents of the invention
本发明所要解决的技术问题是为了针对上述现有技术的不足而提供一种谐波磁场驱动电励磁电机,使其能够减小体积,提高功率密度,达到节能的效果。The technical problem to be solved by the present invention is to provide a harmonic magnetic field driven electric excitation motor in order to solve the above-mentioned shortcomings of the prior art, so that it can reduce the volume, increase the power density, and achieve the effect of energy saving.
本发明解决上述存在的问题所采用的技术方案为:谐波磁场驱动电励磁电机,其包括:转子组件、定子组件、控制模块和线束,所述线束与控制模块通过焊接连接,控制模块通过定位柱和弹性固定卡固定于所述定子组件,线束穿过定子组件设置的径向孔并从轴向孔中引出,定子组件设置的轴承对转子组件起支撑和定位作用,谐波磁场驱动电励磁电机通电转子组件沿圆周方向旋转,主要结构表述如下:The technical solution adopted by the present invention to solve the above existing problems is: a harmonic magnetic field driven electric excitation motor, which includes: a rotor assembly, a stator assembly, a control module and a wire harness. The wire harness is connected to the control module through welding, and the control module is connected through positioning The column and the elastic fixing card are fixed to the stator assembly. The wire harness passes through the radial hole provided in the stator assembly and is led out from the axial hole. The bearing provided in the stator assembly supports and positions the rotor assembly. The harmonic magnetic field drives the electric excitation. The energized rotor assembly of the motor rotates in the circumferential direction. The main structure is expressed as follows:
A.定子上设置若干个齿槽,槽数为Z;A. Several tooth slots are provided on the stator, and the number of slots is Z;
B.在定子圆周360°机械空间上,定子绕组按照设定的连接规律分为m相;B. In the 360° mechanical space of the stator circumference, the stator winding is divided into m phases according to the set connection rules;
C.带定子绕组的定子组件,其任意一相绕组通以直流恒定电流,在定子圆周360°机械空间上,形成的相绕组磁场极对数为Pm;C. Stator assembly with stator winding, any one of its phase windings is supplied with a DC constant current, and the number of pole pairs of the phase winding magnetic field formed in the 360° mechanical space of the stator circumference is Pm;
D.每相定子绕组包含的线包个数为k=n×Pm(n=1,2,3…),采用双层绕组;D. The number of wire packages contained in each phase stator winding is k=n×Pm (n=1, 2, 3...), using double-layer winding;
E.通过励磁绕组实现转子极靴磁极在圆周方向上按照N极和S极顺序进行依次排列,沿着转子圆周360°机械空间上,形成的转子极靴磁极对数为Pr;E. Through the excitation winding, the rotor pole shoe magnetic poles are arranged sequentially in the order of N pole and S pole in the circumferential direction. Along the 360° mechanical space along the rotor circumference, the number of rotor pole shoe magnetic pole pairs formed is Pr;
F.在定子和转子之间的圆周360°机械空间内形成电机气隙。F. The motor air gap is formed within the circumferential 360° mechanical space between the stator and the rotor.
所述转子极靴磁极对数Pr必须满足:Pr=Z±Pm,其中,定子槽数Z:Z=m×k。The number of magnetic pole pairs Pr of the rotor pole shoes must satisfy: Pr=Z±Pm, where the number of stator slots Z: Z=m×k.
本发明实施例设计为定子槽数Z=15,转子极靴磁极对数Pr=10,每相线包极对数Pm=5,每相线包数k=5。The embodiment of the present invention is designed such that the number of stator slots Z=15, the number of magnetic pole pairs of rotor pole shoes Pr=10, the number of pole pairs per phase line package Pm=5, and the number of line packages per phase k=5.
更具体地,对本发明谐波磁场驱动电励磁电机作进一步说明:More specifically, the harmonic magnetic field driven electric excitation motor of the present invention will be further described:
谐波磁场驱动电励磁电机的原理:The principle of harmonic magnetic field driving electric excitation motor:
A.无论作为BLDC控制或PMSM控制,电机转子转动的必要条件是定子绕组在电机气隙中产生的磁场极对数与转子极靴磁极对数相等;A. Whether used as BLDC control or PMSM control, the necessary condition for the rotation of the motor rotor is that the number of magnetic pole pairs generated by the stator winding in the motor air gap is equal to the number of magnetic pole pairs in the rotor pole shoes;
B.定子绕组通电后,在电机气隙中产生基波磁动势,在定子齿槽磁导的作用下,沿气隙空间分布一系列的谐波磁场;B. After the stator winding is energized, a fundamental wave magnetomotive force is generated in the air gap of the motor. Under the action of the stator slot magnetic conductance, a series of harmonic magnetic fields are distributed along the air gap space;
C.当特定的气隙谐波磁场的极对数等于转子极靴磁极对数Pr时,则会输出稳定的电磁力矩。C. When the number of pole pairs of the specific air gap harmonic magnetic field is equal to the number of pole pairs Pr of the rotor pole shoes, a stable electromagnetic torque will be output.
为满足谐波磁场驱动电励磁电机的原理,必须符合以下条件:In order to meet the principle of harmonic magnetic field driving electric excitation motor, the following conditions must be met:
A.谐波磁场驱动电励磁电机转子极靴磁极对数Pr必须满足:Z±Pm=Pr,具体表述如下:A. The number of magnetic pole pairs Pr of the rotor pole piece of the harmonic magnetic field driven electric excitation motor must satisfy: Z±Pm=Pr. The specific expression is as follows:
①根据安培环路定律:∑H×L=W×I=F,其中,H—磁场强度,L—磁路长度,W—线圈匝数,I—线圈电流,F—磁动势;①According to Ampere’s loop law: ∑H×L=W×I=F, where H—magnetic field strength, L—magnetic circuit length, W—number of coil turns, I—coil current, F—magnetomotive force;
②在电机磁场闭合回路中,主要经过铁磁物质和电机气隙形成闭合,故电机安培环路定律表示为:H(δ)×L(δ)+H(铁磁)×L(铁磁)=W×I=F,由于铁磁物质中,H(铁磁)很小可以约等于零,故H(δ)×L(δ)=W×I=F;② In the closed circuit of the motor magnetic field, it is mainly closed through the ferromagnetic material and the motor air gap, so the motor Ampere's loop law is expressed as: H (δ) × L (δ) + H (ferromagnetic) × L (ferromagnetic) =W×I=F, since in ferromagnetic substances, H (ferromagnetism) is very small and can be approximately equal to zero, so H(δ)×L(δ)=W×I=F;
③磁感应强度B与磁场强度H的关系为:B=μ×H,其中,μ—相对导磁率;③The relationship between magnetic induction intensity B and magnetic field intensity H is: B=μ×H, where μ—relative magnetic permeability;
④故F=WI=B(δ)×L(δ)/μ0,其中,μ0—空气相对导磁率;④So F=WI=B(δ)×L(δ)/μ0, where μ0—relative magnetic permeability of air;
⑤电机气隙磁感应强度可以表示为:B(δ)=F×μ0/L(δ)=F×Λ(δ),其中,Λ(δ)—电机气隙磁导,气隙越小,磁导越大;⑤The magnetic induction intensity of the motor air gap can be expressed as: B(δ)=F×μ0/L(δ)=F×Λ(δ), where Λ(δ)—the motor air gap magnetic conductance. The smaller the air gap, the smaller the magnetic flux density. The greater the conduction;
⑥磁动势F在电机气隙中空间分布为矩形波,根据傅里叶级数可以表示为:⑥The spatial distribution of the magnetomotive force F in the air gap of the motor is a rectangular wave, which can be expressed according to the Fourier series as:
F(α)=(2/π)×F×[sin(Pm×α)+(1/3)×sin(3×Pm×α)+…+(1/n)×sin(n×Pm×α)],其中,n=1,2,3...,α—表示沿着气隙圆周方向的机械空间角度,可见,磁动势的基波幅值最大,基波磁动势表达式为:F(α)=(2/π)×F×[sin(Pm×α)+(1/3)×sin(3×Pm×α)+…+(1/n)×sin(n×Pm× α)], where n=1, 2, 3..., α—represents the mechanical space angle along the circumferential direction of the air gap. It can be seen that the fundamental wave amplitude of the magnetomotive force is the largest, and the expression of the fundamental wave magnetomotive force for:
F1(α)=(2/π)×F×sin(Pm×α)=(2×WI/π)×sin(Pm×α)F1(α)=(2/π)×F×sin(Pm×α)=(2×WI/π)×sin(Pm×α)
⑦电机气隙齿磁导Λδ在空间分布近似矩形波,根据傅里叶级数可以表示为:⑦The spatial distribution of the motor air gap tooth magnetic permeance Λδ is approximately a rectangular wave, which can be expressed according to the Fourier series as:
Λδ(α)=Λ0+Λ1×cos(Z×α)+Λ2×cos(2×Z×α)+…+Λn×cos(n×Z×α),其中,n=1,2,3...,基波磁导幅值最大,其表达式为:Λδ1(α)=Λ0+Λ1×cos(Z×α);Λδ(α)=Λ0+Λ1×cos(Z×α)+Λ2×cos(2×Z×α)+…+Λn×cos(n×Z×α), where n=1, 2, 3. .., the fundamental wave magnetic permeability amplitude is the largest, and its expression is: Λδ1(α)=Λ0+Λ1×cos(Z×α);
⑧定子绕组基波磁动势在定子齿磁导的调制下,在电机气隙中沿空间分布产生的磁感应强度表达式:⑧The expression of the magnetic induction intensity produced by the stator winding fundamental wave magnetomotive force distributed along the space in the motor air gap under the modulation of the stator tooth magnetic conductance:
B(α)=F×Λ(δ)=(2×WI/π)×sin(Pm×α)×[Λ0+Λ1×cos(Z×α)]=Bm0×sin(Ps×α)+Bm1×sin(Pm×α)×cos(Z×α),其中,Bm0=2×WI×Λ0/π,Bm1=2×WI×Λ1/π,利用三角公式定理:sin(a)× cos(b)=[sin(a+b)+sin(a-b)]/2,将上述公式进行变化,得出:B(α)=F×Λ(δ)=(2×WI/π)×sin(Pm×α)×[Λ0+Λ1×cos(Z×α)]=Bm0×sin(Ps×α)+Bm1 ×sin(Pm×α)×cos(Z×α), among which, Bm0=2×WI×Λ0/π, Bm1=2×WI×Λ1/π, using the trigonometric formula theorem: sin(a)× cos(b )=[sin(a+b)+sin(a-b)]/2, change the above formula to get:
B(α)=Bm0×sin(Pm×α)+(Bm1/2)×sin[(Z+Pm)×α]+(Bm1/2)×sin[(Z-Pm)×α]由上式可见,由定子相绕组通电产生的基波磁动势可以在电机气隙中产生以下三种磁场:B(α)=Bm0×sin(Pm×α)+(Bm1/2)×sin[(Z+Pm)×α]+(Bm1/2)×sin[(Z-Pm)×α] from the above formula It can be seen that the fundamental wave magnetomotive force generated by the stator phase winding energization can produce the following three magnetic fields in the motor air gap:
a.极对数为Pm的基波磁动势磁场,该磁场性质相当于定子没有开槽而形成的磁场;a. The fundamental wave magnetomotive force magnetic field with the number of pole pairs Pm, the properties of this magnetic field are equivalent to the magnetic field formed by the stator without slots;
b.极对数为(Z+Pm)的齿谐波磁导磁场,该磁场性质是相当于基波磁动势被定子齿槽调制后形成的磁场;b. The tooth harmonic permeability magnetic field with the pole pair number (Z+Pm), the nature of this magnetic field is equivalent to the magnetic field formed after the fundamental wave magnetomotive force is modulated by the stator slot;
c.极对数为(Z-Pm)的齿谐波磁导磁场,该磁场性质是相当于基波磁动势被定子齿槽调制后形成的磁场;c. The tooth harmonic permeability magnetic field with the pole pair number (Z-Pm), the nature of this magnetic field is equivalent to the magnetic field formed after the fundamental wave magnetomotive force is modulated by the stator slot;
⑨谐波磁场驱动电励磁电机的转子极靴磁极对数Pr选择:⑨ Selection of the number of pole pairs Pr of the rotor pole shoes of the harmonic magnetic field driven electric excitation motor:
a.根据电机运行基本原理,只有转子极靴磁极对数和定子线圈形成的磁极对数相等时,电机才会输出稳定的电磁力矩;a. According to the basic principles of motor operation, the motor will output stable electromagnetic torque only when the number of magnetic pole pairs formed by the rotor pole shoes and the stator coil are equal;
b.根据上述原理,谐波磁场驱动电励磁电机的转子极靴磁极对数Pr必须满足:b. According to the above principle, the number of pole pairs Pr of the rotor pole shoes of the harmonic magnetic field driven electric excitation motor must satisfy:
Z+Pm=Pr或Z-Pm=Pr。Z+Pm=Pr or Z-Pm=Pr.
B.谐波磁场驱动电励磁电机定子槽数Z的选择:Z=m×k,具体表述如下:B. Selection of stator slot number Z for harmonic magnetic field driven electric excitation motor: Z=m×k, the specific expression is as follows:
每个线包有2个元件边,每个定子槽为双层绕组,采用上下层或左右两侧放置2个元件,即每个定子槽放置两个不同线包的元件边。Each wire package has 2 component sides, and each stator slot is a double-layer winding. Two components are placed on the upper and lower layers or on the left and right sides. That is, each stator slot places the component sides of two different wire packages.
每相绕组包含k个线包,电机分为m相,则电机定子槽数Z需满足:Z=m×k,采用的双层绕组。Each phase winding contains k wire packages, and the motor is divided into m phases. The number of stator slots Z of the motor must satisfy: Z=m×k, and the double-layer winding is used.
C.谐波磁场驱动电机每相线包个数k和每相线包形成磁极对数Pm的关系:C. The relationship between the number k of each phase line package of the harmonic magnetic field drive motor and the number of magnetic pole pairs Pm formed by each phase line package:
k=n×Pm,其中,n=1,2,3…,具体表述如下:k=n×Pm, where n=1, 2, 3..., the specific expression is as follows:
从电磁场原理可知,1个线包只能形成1对极磁场,所以线包个数k≥线包磁极极对数Pm。在电机气隙圆周360°机械空间上,考虑到气隙磁场幅值对称的原则:形成1对极的线包个数可以是1,2,3,…;形成2对极的线包个数可以是2,4,6,…;形成3对极的线包个数可以是3,6,9,…;形成Pm对极的线包个数为:k=n×Pm,其中n=1,2,3…。From the principle of electromagnetic field, it can be known that one wire package can only form one pair of magnetic poles, so the number of wire packages k ≥ the number of magnetic pole pairs Pm of the wire package. In the 360° mechanical space around the air gap circumference of the motor, taking into account the principle of symmetry of the air gap magnetic field amplitude: the number of wire packages forming one pair of poles can be 1, 2, 3,...; the number of wire packages forming two pairs of poles It can be 2, 4, 6,...; the number of wire packages forming 3 pairs of poles can be 3, 6, 9,...; the number of wire packages forming Pm poles is: k=n×Pm, where n=1 ,2,3….
根据原理条件,当采用三相(m=3)绕组结构,谐波磁场驱动电励磁电机的定子槽数/转子磁钢极对数/每相线包数组合如下表:According to the principle conditions, when a three-phase (m=3) winding structure is used, the combination of the number of stator slots/number of rotor magnet pole pairs/number of wire packages per phase of the harmonic magnetic field driven electric excitation motor is as follows:
Figure PCTCN2022117670-appb-000001
Figure PCTCN2022117670-appb-000001
谐波磁场驱动电励磁电机的控制方式:适用于BLDC控制方式和PMSM控制方式,其中BLDC为方波电压(电流)驱动方式,PMSM为正弦波电压(电流)驱动方式。The control method of harmonic magnetic field driven electric excitation motor: suitable for BLDC control method and PMSM control method, where BLDC is a square wave voltage (current) drive method and PMSM is a sine wave voltage (current) drive method.
谐波磁场驱动电励磁电机提升功率体积密度的原理:The principle of harmonic magnetic field driving electric excitation motor to increase power volume density:
A.电励磁电机的基本评价指标:电机作为旋转机械装置,不可避免的会产生振动噪音,而电机齿槽力矩脉动是引起电机振动噪音的重要根源,故电机在追求功率体积密度(瓦/每升)到极致的同时,也必须同时降低齿槽力矩脉动,保证电机振动噪音在合理范围内,这样提升功率体积密度才有实际意义;A. Basic evaluation indicators of electric excitation motors: As a rotating mechanical device, the motor will inevitably produce vibration noise, and the cogging torque pulsation of the motor is an important source of vibration and noise in the motor. Therefore, the motor is in pursuit of power volume density (watt/each ) to the extreme, the cogging torque pulsation must also be reduced to ensure that the motor vibration noise is within a reasonable range, so that increasing the power volume density has practical significance;
B.提升永磁电机功率体积密度的主要手段:B. The main means to improve the power volume density of permanent magnet motors:
a.优化电机磁路:提升效果有限;a. Optimize the motor magnetic circuit: the improvement effect is limited;
b.减少电机定子和转子间的气隙值:基本上气隙磁场幅值与气隙值成反比,故提升效果明显;b. Reduce the air gap value between the motor stator and rotor: Basically, the air gap magnetic field amplitude is inversely proportional to the air gap value, so the improvement effect is obvious;
C.减少电机气隙值对电机齿槽力矩脉动的负面影响:齿槽力矩幅值与气隙磁场幅值的平方成正比,故缩小电机气隙值会使得电机齿槽力矩脉动显著增加,导致电机振动噪音也显著增加;C. Reducing the negative impact of the motor air gap value on the motor cogging torque pulsation: The cogging torque amplitude is proportional to the square of the air gap magnetic field amplitude, so reducing the motor air gap value will significantly increase the motor cogging torque pulsation, resulting in Motor vibration noise also increases significantly;
D.降低电机齿槽力矩脉动幅值的有效方法:D. An effective method to reduce the amplitude of motor cogging torque pulsation:
a.在维持固定的电机气隙值条件下,理论研究表明,降低电机齿槽力矩脉动的有效方法是增大电机齿槽力矩波动周期数(转子旋转一周齿槽力矩波动的周期个数),其中,波动周期数等于定子槽数和转子极数的最小公倍数;a. Under the condition of maintaining a fixed motor air gap value, theoretical research shows that an effective method to reduce motor cogging torque pulsation is to increase the number of motor cogging torque fluctuation cycles (the number of cycles of cogging torque fluctuations in one rotation of the rotor), Among them, the number of fluctuation cycles is equal to the least common multiple of the number of stator slots and the number of rotor poles;
b.谐波磁场驱动电励磁电机和传统电机在相同定子槽数条件下的波动周期数对比如下表:b. The comparison of the number of fluctuation cycles between harmonic magnetic field driven electric excitation motors and traditional motors under the same number of stator slots is as follows:
Figure PCTCN2022117670-appb-000002
Figure PCTCN2022117670-appb-000002
从上表对比结果可以看出,在定子槽数相同的情况下,谐波磁场驱动电励磁电机与传统电励磁电机相比,谐波磁场驱动电励磁电机的齿槽力矩波动周期数增加趋势明显。It can be seen from the comparison results in the above table that when the number of stator slots is the same, the number of cogging torque fluctuation cycles of the harmonic magnetic field driven electric excitation motor increases significantly compared with the traditional electric excitation motor. .
更好地,所述极靴设置的磁轭左侧面、磁轭右侧面、磁轭上端面和磁轭下端面均进行绝缘处理,与励磁绕组之间起到绝缘作用。Preferably, the left side of the yoke, the right side of the yoke, the upper end face of the yoke and the lower end face of the yoke provided on the pole piece are all insulated to play an insulating role with the excitation winding.
更好地,所述极靴所设置的磁轭左侧面、磁轭右侧面、磁轭上端面和磁轭下端面分别与励磁绕组的励磁绕组左侧、励磁绕组右侧、励磁绕组上侧和励磁绕组下侧配合,进行励磁绕组径向和轴向的定位。Preferably, the left side of the yoke, the right side of the yoke, the upper end face of the yoke and the lower end face of the yoke provided with the pole piece are respectively in contact with the left side of the excitation winding, the right side of the excitation winding and the top end of the excitation winding. Cooperate with the lower side of the excitation winding to position the excitation winding radially and axially.
更好地,所述励磁绕组可通过设定绕线方式来控制励磁电流的方向以实现26个极靴的磁极按N极和S极交替排列分布。Preferably, the excitation winding can control the direction of the excitation current by setting the winding method to realize that the magnetic poles of the 26 pole pieces are alternately arranged and distributed according to N poles and S poles.
更好地,所述定子组件的电机轴上设置正极导电环、负极导电环,转子组件上设置正极导电片、负极导电片,电源正极和负极分别通过正极导电环及正极导电片和负极导电环及负极导电片给励磁绕组供电。Preferably, the motor shaft of the stator assembly is provided with a positive conductive ring and a negative conductive ring, the rotor assembly is provided with a positive conductive piece and a negative conductive piece, and the positive and negative poles of the power supply pass through the positive conductive ring, the positive conductive piece and the negative conductive ring respectively. And the negative conductive piece supplies power to the excitation winding.
更好地,所述正极导电环和负极导电环与电机轴之间设置绝缘环,起到绝缘的作用。Preferably, an insulating ring is provided between the positive conductive ring, the negative conductive ring and the motor shaft to play the role of insulation.
更好地,所述定子组件的电机轴上设置径向孔和轴向孔,线束穿过径向孔,并从轴向孔引出,实现线束的引出。Preferably, a radial hole and an axial hole are provided on the motor shaft of the stator assembly, and the wire harness passes through the radial hole and is led out from the axial hole to realize the lead-out of the wire harness.
更好地,所述定子组件上设置弹性固定卡和定位柱对控制模块进行定位和固定,能提高控制模块定位精度并使其固定更加牢固可靠。Preferably, elastic fixing clips and positioning posts are provided on the stator assembly to position and fix the control module, which can improve the positioning accuracy of the control module and make its fixing more firm and reliable.
还可以,所述谐波磁场驱动电励磁电机根据不用的用途,设计为外定子内转子结构,同样能达到与本专利实施例外转子内定子结构等同的性能和效果。Alternatively, the harmonic magnetic field driven electric excitation motor can be designed with an outer stator and inner rotor structure according to different uses, which can also achieve the same performance and effect as the outer rotor and inner stator structure in the embodiment of this patent.
与现有技术相比,本发明的优点在于:谐波磁场驱动电励磁电机通过设定的定子槽 数和转子极靴磁极数的组合,大幅提升齿槽力矩波动周期数,可以在缩小谐波磁场驱动电励磁电机气隙值的同时,维持或降低谐波磁场驱动电励磁电机的齿槽力矩波动幅值,通过设定的定子绕线方式,使得定子产生的谐波磁场极对数等于转子极靴磁极对数,形成稳定的电磁力矩输出,能够采用较小的谐波磁场驱动电励磁电机气隙,大幅提升气隙磁场强度,使谐波磁场驱动电励磁电机输出功率正比例提升,谐波磁场驱动电励磁电机的功率体积密度也同步正比例提升。与传统电机相比较,在输出功率相同的条件下,谐波磁场驱动电励磁电机体积减少了一倍以上,意味着谐波磁场驱动电机重量也减少一倍以上,能明显节省电机材料的使用成本,尤其是稀土永磁材料的成本,极大地提升了产品市场竞争优势。该谐波磁场驱动电励磁电机结构,可匹配传统的BLDC和PMSM电机控制模块,控制方面具有较强的通用性。Compared with the existing technology, the advantage of the present invention is that the harmonic magnetic field driven electric excitation motor greatly increases the number of cogging torque fluctuation cycles through the set combination of the number of stator slots and the number of magnetic poles of the rotor pole shoes, and can reduce harmonics. While the magnetic field drives the air gap value of the electric excitation motor, it maintains or reduces the cogging torque fluctuation amplitude of the harmonic magnetic field-driven electric excitation motor. Through the set stator winding method, the number of pole pairs of the harmonic magnetic field generated by the stator is equal to that of the rotor. The number of pairs of magnetic poles in the pole shoes forms a stable electromagnetic torque output, which can use a smaller harmonic magnetic field to drive the air gap of the electric excitation motor, greatly increasing the strength of the air gap magnetic field, so that the output power of the electric excitation motor driven by the harmonic magnetic field is increased proportionally, and the harmonic The power volume density of magnetic field-driven electric excitation motors has also increased proportionally. Compared with traditional motors, under the same output power conditions, the volume of harmonic magnetic field driven electric excitation motors is more than doubled, which means that the weight of harmonic magnetic field driven motors is also more than doubled, which can significantly save the cost of motor materials. , especially the cost of rare earth permanent magnet materials, has greatly enhanced the product's market competitiveness. This harmonic magnetic field drives the electric excitation motor structure, which can match the traditional BLDC and PMSM motor control modules, and has strong versatility in control.
附图说明Description of drawings
图1是本发明实施例谐波磁场驱动电励磁电机的立体图。Figure 1 is a perspective view of a harmonic magnetic field driven electric excitation motor according to an embodiment of the present invention.
图2是本发明实施例谐波磁场驱动电励磁电机的分解示意图。Figure 2 is an exploded schematic diagram of a harmonic magnetic field driven electric excitation motor according to an embodiment of the present invention.
图3是本发明实施例谐波磁场驱动电励磁电机的结构示意图。Figure 3 is a schematic structural diagram of a harmonic magnetic field driven electric excitation motor according to an embodiment of the present invention.
图4a是图3中A-A剖面图的局部视图。Figure 4a is a partial view of the A-A cross-section in Figure 3 .
图4b是图3中B-B剖面图的局部视图。Figure 4b is a partial view of the B-B cross section in Figure 3 .
图5a是图4a中F的局部放大图。Figure 5a is a partial enlarged view of F in Figure 4a.
图5b是图4b中P的局部放大图。Figure 5b is a partial enlarged view of P in Figure 4b.
图6是本发明实施例转子组件的分解示意图。Figure 6 is an exploded schematic view of the rotor assembly according to the embodiment of the present invention.
图7是图6中W的局部旋转放大图。Figure 7 is a partially rotated enlarged view of W in Figure 6.
图8是本发明实施例励磁绕组的立体图。Figure 8 is a perspective view of the field winding according to the embodiment of the present invention.
图9是本发明实施例定子组件的分解示意图。Figure 9 is an exploded schematic diagram of the stator assembly according to the embodiment of the present invention.
图10是本发明实施例电机轴的剖视图。Figure 10 is a cross-sectional view of the motor shaft according to the embodiment of the present invention.
具体实施方式Detailed ways
下面结合附图及实施例对本发明作进一步描述。The present invention will be further described below in conjunction with the accompanying drawings and examples.
如图1、2所示,一种谐波磁场驱动电励磁电机,其包括转子组件1、定子组件2、控制模块3和线束4。谐波磁场驱动电励磁电机通电工作时通过转子组件1的旋转进行扭矩的输出,实现电能转换为机械能。As shown in Figures 1 and 2, a harmonic magnetic field driven electric excitation motor includes a rotor assembly 1, a stator assembly 2, a control module 3 and a wire harness 4. When the harmonic magnetic field driven electric excitation motor is energized and working, torque is output through the rotation of the rotor assembly 1, thereby converting electrical energy into mechanical energy.
如图3至图10所示,所述转子组件1由机壳11、转子12、励磁绕组13、正极导电片14和负极导电片15组成。As shown in FIGS. 3 to 10 , the rotor assembly 1 is composed of a casing 11 , a rotor 12 , an excitation winding 13 , a positive conductive sheet 14 and a negative conductive sheet 15 .
所述转子12通过粘接剂粘接于机壳11内圆面。The rotor 12 is bonded to the inner circumferential surface of the casing 11 through adhesive.
所述转子12在内圆上均匀设置20个极靴(10对极)。The rotor 12 is evenly provided with 20 pole pieces (10 pairs of poles) on the inner circle.
所述极靴1201设置的磁轭左侧面1202、磁轭右侧面1203、磁轭上端面1204和磁轭下端面1204均进行绝缘处理,与励磁绕组13之间起到绝缘作用。The left side 1202 of the yoke, the right side 1203 of the yoke, the upper end face 1204 and the lower end face 1204 of the yoke provided in the pole piece 1201 are all insulated to play an insulating role with the excitation winding 13 .
所述极靴1201所设置的磁轭左侧面1202、磁轭右侧面1203、磁轭上端面1204和磁轭下端面1204分别与励磁绕组13的励磁绕组左侧1301、励磁绕组右侧1302、励磁绕组上侧1303和励磁绕组下侧1304配合,进行励磁绕组13径向和轴向的定位。The yoke left side 1202, the yoke right side 1203, the yoke upper end face 1204 and the yoke lower end face 1204 provided in the pole piece 1201 are respectively connected with the excitation winding left side 1301 and the excitation winding right side 1302 of the excitation winding 13. , the upper side of the field winding 1303 and the lower side of the field winding 1304 cooperate to position the field winding 13 in the radial and axial directions.
所述励磁绕组13可通过设定绕线方式来控制励磁电流的方向以实现20个极靴1201的磁极按N极和S极交替排列分布。The excitation winding 13 can control the direction of the excitation current by setting the winding method to realize that the magnetic poles of the 20 pole pieces 1201 are alternately arranged and distributed in N poles and S poles.
所述定子组件的电机轴211上设置正极导电环29、负极导电环2010,转子组件上设置正极导电片14、负极导电片15,电源正极和负极分别通过正极导电环29及正极导电片14和负极导电环2010及负极导电片15给上述励磁绕组13供电。The motor shaft 211 of the stator assembly is provided with a positive conductive ring 29 and a negative conductive ring 2010. The rotor assembly is provided with a positive conductive sheet 14 and a negative conductive sheet 15. The positive and negative poles of the power supply pass through the positive conductive ring 29 and the positive conductive sheet 14 and 15 respectively. The negative conductive ring 2010 and the negative conductive sheet 15 provide power to the above-mentioned excitation winding 13 .
所述正极导电环29和负极导电环2010与电机轴211之间设置有绝缘环2011,起到绝缘的作用。An insulating ring 2011 is provided between the positive conductive ring 29 and the negative conductive ring 2010 and the motor shaft 211 to provide insulation.
所述定子组件2的定子21在其外圆上均匀设置15个齿槽,每相线包极对数为5,每相线包数为5。The stator 21 of the stator assembly 2 is evenly provided with 15 tooth slots on its outer circle, the number of pole pairs of each phase wire package is 5, and the number of each phase wire package is 5.
所述每个线包有2个元件边,每个定子槽设计采用双层绕组,采用上下层或左右两侧放置2个元件边,定子槽数等于线包总数。Each wire package has 2 component sides, and each stator slot is designed with double-layer winding, with 2 component sides placed on the upper and lower layers or on the left and right sides. The number of stator slots is equal to the total number of wire packages.
所述定子组件2的外圆与转子组件1的极靴1201形成谐波磁场驱动电励磁电机气隙L,由于采用本发明技术方案,其可以减小。The outer circle of the stator assembly 2 and the pole piece 1201 of the rotor assembly 1 form a harmonic magnetic field driving electric excitation motor air gap L, which can be reduced due to the adoption of the technical solution of the present invention.
所述线束4与所述控制模块3通过焊接连接。The wire harness 4 and the control module 3 are connected by welding.
所述定子组件2设置弹性固定卡212和定位柱213对控制模块3进行定位和固定,使控制模块3的固定更加牢固可靠。The stator assembly 2 is provided with elastic fixing clips 212 and positioning posts 213 to position and fix the control module 3, making the fixation of the control module 3 more firm and reliable.
所述定子组件2的电机轴211上设置径向孔2111、2113、2114和轴向孔2112,以方便线束4穿过径向孔2111、2113、2114和从轴向孔2112通过,实现线束4的引出。The motor shaft 211 of the stator assembly 2 is provided with radial holes 2111, 2113, 2114 and an axial hole 2112 to facilitate the wire harness 4 to pass through the radial holes 2111, 2113, 2114 and the axial hole 2112 to realize the wire harness 4 of elicitation.
所述定子组件2设置的轴承23、28固定于所述转子组件1的机壳11内,并对转子组件1起支撑和定位作用,谐波磁场驱动电励磁电机通电工作时转子组件可进行圆周方向旋转。The bearings 23 and 28 provided in the stator assembly 2 are fixed in the casing 11 of the rotor assembly 1 and play a role in supporting and positioning the rotor assembly 1. When the harmonic magnetic field drives the electric excitation motor, the rotor assembly can rotate in a circular motion. direction of rotation.
所述定子组件2设置止位环25、26分别对轴承23、28进行固定,以实现对转子组件1进行轴向限位,设置的耐磨垫片24、27起到减小摩擦力的作用。The stator assembly 2 is provided with stop rings 25 and 26 to fix the bearings 23 and 28 respectively to achieve axial limitation of the rotor assembly 1, and the wear-resistant gaskets 24 and 27 are provided to reduce friction. .

Claims (9)

  1. 谐波磁场驱动电励磁电机,其特征在于:包括:The harmonic magnetic field drives the electric excitation motor, which is characterized by: including:
    A.定子上设置若干个齿槽,槽数为Z;A. Several tooth slots are provided on the stator, and the number of slots is Z;
    B.在定子圆周360°机械空间上,定子绕组按照设定的连接规律分为m相;B. In the 360° mechanical space of the stator circumference, the stator winding is divided into m phases according to the set connection rules;
    C.带定子绕组的定子组件,其任意一相绕组通以直流恒定电流,在定子圆周360°机械空间上,形成的相绕组磁场极对数为Pm;C. Stator assembly with stator winding, any one of its phase windings is supplied with a DC constant current, and the number of pole pairs of the phase winding magnetic field formed in the 360° mechanical space of the stator circumference is Pm;
    D.每相定子绕组包含的线包个数为k=n×Pm(n=1,2,3…),采用双层绕组;D. The number of wire packages contained in each phase stator winding is k=n×Pm (n=1, 2, 3...), using double-layer winding;
    E.通过励磁绕组实现转子极靴磁极在圆周方向上按照N极和S极顺序进行依次排列,沿着转子圆周360°机械空间上,形成的转子极靴磁极对数为Pr;E. Through the excitation winding, the rotor pole shoe magnetic poles are arranged sequentially in the order of N pole and S pole in the circumferential direction. Along the 360° mechanical space along the rotor circumference, the number of rotor pole shoe magnetic pole pairs formed is Pr;
    F.在定子和转子之间的圆周360°机械空间内形成电机气隙;F. Form an air gap in the motor within the circumferential 360° mechanical space between the stator and rotor;
    所述转子极靴磁极对数Pr必须满足:Pr=Z±Pm,其中,定子槽数Z:Z=m×k。The number of magnetic pole pairs Pr of the rotor pole shoes must satisfy: Pr=Z±Pm, where the number of stator slots Z: Z=m×k.
  2. 如权利要求1所述的谐波磁场驱动电励磁电机,其特征在于:所述定子槽数Z=15,转子极靴磁极对数Pr=10,每相线包极对数Pm=5,每相线包数k=5。The harmonic magnetic field driven electric excitation motor according to claim 1, characterized in that: the number of stator slots Z=15, the number of magnetic pole pairs of rotor pole shoes Pr=10, the number of pole pairs of each phase line Pm=5, and each The number of phase wire packages k=5.
  3. 如权利要求1所述的谐波磁场驱动电励磁电机,其特征在于:所述电励磁转子极靴设置的磁轭左侧面、磁轭右侧面、磁轭上端面和磁轭下端面均进行绝缘处理,与励磁绕组之间起到绝缘作用。The harmonic magnetic field driven electric excitation motor according to claim 1, characterized in that: the left side of the yoke, the right side of the yoke, the upper end face of the yoke and the lower end face of the yoke provided with the pole pieces of the electric excitation rotor are evenly spaced. Insulation treatment is performed to provide insulation from the excitation winding.
  4. 如权利要求1所述的谐波磁场驱动电励磁电机,其特征在于:所述电励磁转子极靴所设置的磁轭左侧面、磁轭右侧面、磁轭上端面和磁轭下端面分别与励磁绕组的励磁绕组左侧、励磁绕组右侧、励磁绕组上侧和励磁绕组下侧配合,进行励磁绕组径向和轴向的定位。The harmonic magnetic field driven electric excitation motor according to claim 1, characterized in that: the electric excitation rotor pole piece is provided with the left side of the yoke, the right side of the yoke, the upper end face of the yoke and the lower end face of the yoke. Cooperate with the left side of the field winding, the right side of the field winding, the upper side of the field winding and the lower side of the field winding respectively to position the field winding in the radial and axial directions.
  5. 如权利要求1所述的谐波磁场驱动电励磁电机,其特征在于:所述励磁绕组通过设定绕线方式来控制励磁电流的方向以实现20个极靴的磁极按N极和S极交替排列分布。The harmonic magnetic field driven electric excitation motor according to claim 1, characterized in that: the excitation winding controls the direction of the excitation current by setting the winding method to realize that the magnetic poles of the 20 pole pieces alternate between N poles and S poles. Arrangement and distribution.
  6. 如权利要求5所述的谐波磁场驱动电励磁电机,其特征在于:所述定子组件的电机轴上设置正极导电环、负极导电环,转子组件上设置正极导电片、负极导电片,电源正极和负极分别通过正极导电环及正极导电片和负极导电环及负极导电片给励磁绕组供电。The harmonic magnetic field driven electric excitation motor according to claim 5, characterized in that: the motor shaft of the stator assembly is provided with a positive conductive ring and a negative conductive ring, the rotor assembly is provided with a positive conductive piece and a negative conductive piece, and the positive pole of the power supply is and negative pole respectively supply power to the excitation winding through the positive conductive ring and the positive conductive sheet and the negative conductive ring and the negative conductive sheet.
  7. 如权利要求6所述的谐波磁场驱动电励磁电机,其特征在于:所述正极导电环和负极导电环与电机轴之间设置绝缘环。The harmonic magnetic field driven electric excitation motor according to claim 6, wherein an insulating ring is provided between the positive conductive ring, the negative conductive ring and the motor shaft.
  8. 如权利要求1所述的谐波磁场驱动电励磁电机,其特征在于:所述定子组件的电机轴上设置径向孔和轴向孔,线束穿过径向孔,并从轴向孔引出。The harmonic magnetic field driven electric excitation motor according to claim 1, characterized in that: a radial hole and an axial hole are provided on the motor shaft of the stator assembly, and the wire harness passes through the radial hole and is led out from the axial hole.
  9. 如权利要求1所述的谐波磁场驱动电励磁电机,其特征在于:所述定子组件上设置弹性固定卡和定位柱对控制模块进行定位和固定。The harmonic magnetic field driven electric excitation motor according to claim 1, characterized in that elastic fixing clips and positioning posts are provided on the stator assembly to position and fix the control module.
PCT/CN2022/117670 2022-07-27 2022-09-07 Harmonic magnetic field driven electrically excited motor WO2024021238A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107579606A (en) * 2017-09-20 2018-01-12 江苏大学 A kind of low fractional-slot concentratred winding magneto and design method of performance of making an uproar that shake
CN211405627U (en) * 2019-12-17 2020-09-01 西安交通大学 Stator and rotor double-armature winding multiple electromagnetic torque single air gap reluctance motor structure
WO2021189594A1 (en) * 2020-03-24 2021-09-30 江苏大学 Magnetic field-modulated hybrid-excited machine and multi-working-wave design method therefor
CN114598082A (en) * 2022-03-05 2022-06-07 宁波恒帅股份有限公司 Harmonic magnetic field driving motor
CN114726119A (en) * 2022-03-16 2022-07-08 江苏大学 Single-winding double-excitation magnetic field modulation motor and collaborative excitation design method thereof
CN217063429U (en) * 2022-03-05 2022-07-26 宁波恒帅股份有限公司 Harmonic magnetic field driving motor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107579606A (en) * 2017-09-20 2018-01-12 江苏大学 A kind of low fractional-slot concentratred winding magneto and design method of performance of making an uproar that shake
CN211405627U (en) * 2019-12-17 2020-09-01 西安交通大学 Stator and rotor double-armature winding multiple electromagnetic torque single air gap reluctance motor structure
WO2021189594A1 (en) * 2020-03-24 2021-09-30 江苏大学 Magnetic field-modulated hybrid-excited machine and multi-working-wave design method therefor
CN114598082A (en) * 2022-03-05 2022-06-07 宁波恒帅股份有限公司 Harmonic magnetic field driving motor
CN217063429U (en) * 2022-03-05 2022-07-26 宁波恒帅股份有限公司 Harmonic magnetic field driving motor
CN114726119A (en) * 2022-03-16 2022-07-08 江苏大学 Single-winding double-excitation magnetic field modulation motor and collaborative excitation design method thereof

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