WO2022246700A1 - 具有相间隔磁能力的模块化电机 - Google Patents

具有相间隔磁能力的模块化电机 Download PDF

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Publication number
WO2022246700A1
WO2022246700A1 PCT/CN2021/096120 CN2021096120W WO2022246700A1 WO 2022246700 A1 WO2022246700 A1 WO 2022246700A1 CN 2021096120 W CN2021096120 W CN 2021096120W WO 2022246700 A1 WO2022246700 A1 WO 2022246700A1
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Prior art keywords
stator
motor
phase
modules
magnetic isolation
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French (fr)
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章恒亮
王宇辰
花为
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Southeast University
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Southeast University
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/28—Layout of windings or of connections between windings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the invention relates to motor drive technology, in particular to a modularized motor with phase magnetic isolation capability, and belongs to the technical field of power generation, transformation or distribution.
  • the electric vehicle drive motors commonly used in the industry mostly use three-phase distributed windings, which have the following four disadvantages: (1) The end of the winding is long, the amount of copper is large, the resistance is large, and the copper consumption is high; (2) The automatic winding The wire process is complicated and the production efficiency is low; (3) The mutual inductance between the winding coils is large, and the fault tolerance is weak; (4) All windings are only divided into three phases, and each phase has a large number of turns. After high speed, the bus voltage is required. Motors with a modular stator structure are favored for their simple machining, high slot-filling ratio, and low manufacturing cost.
  • the Chinese patent whose publication number is CN111313576A discloses a modular permanent magnet motor; the Chinese patent whose publication number is CN109599958A discloses a new permanent magnet motor with high reliability and high power density, and the Chinese patent whose publication number is CN106787280A discloses a A modular three-phase AC permanent magnet variable frequency speed-regulating motor, the Chinese patent with publication number CN108768016A discloses a winding misalignment hub motor stator and a winding misalignment hub motor device, and the Chinese patent with publication number CN1967970 discloses a motor stator Components and their manufacturing methods, the above patents all propose a motor with a modular stator structure, but all stator teeth are wound with windings, which leads to serious magnetic coupling between different windings, and a single winding failure will affect the normal operation of the remaining windings.
  • the modular stator structure with high magnetic isolation capacity can improve the reliability of motor operation and reduce processing costs.
  • the Chinese patent with the publication number CN111082548A discloses a stator modular hybrid excitation alternating pole flux reversal motor. Permanent magnets are attached to the surface of the stator teeth. The stator with this structure cannot be applied to the rotor permanent magnet motor.
  • the Chinese patent with the publication number CN101951041A discloses a modular combined motor stator structure and its application. The size of the magnetic isolation teeth and the winding teeth are exactly the same, the magnetic circuit design is not flexible, and there is no room for optimization.
  • the Chinese patent with the publication number CN101300729A discloses a multi-phase motor for wheels, which uses an E-shaped stator module, but the width of the magnetic isolation teeth is the same as that of the winding teeth, and the splicing of the magnetic isolation teeth of two adjacent modules results in an asymmetrical stator structure. Increased spatial harmonics.
  • the Chinese patent with the publication number CN103762759A discloses a radial flux modular multiphase motor with high magnetic isolation capability.
  • the submodule of the multiphase motor has a five-tooth structure, and the windings of the submodule are reversely wound. The two sets of windings are coupled to each other, and the utilization rate of the magnetic separation teeth is low.
  • the Chinese patent with the publication number CN1862928A discloses a low-speed DC brushless motor with a stator module structure.
  • the stator module structure realizes the flux linkage decoupling between different phases, but is limited to a three-phase system.
  • the purpose of the present invention is to address the shortcomings of the above-mentioned background technology and provide a modular motor with phase separation capability.
  • the motor stator is simple to process, the winding is easy to mechanically wind, and has high fault tolerance.
  • the stator module can be used to customize various types of motors.
  • the multi-phase motor realizes the invention purpose of magnetic isolation and physical isolation of adjacent stator modules and the invention purpose of magnetic isolation of adjacent unit motor modules, and solves the inflexible magnetic circuit design of the existing modular stator structure, the low utilization rate of magnetic isolation teeth and the Technical issues with application limitations.
  • the present invention adopts following technical scheme for realizing above-mentioned purpose of the invention:
  • the modularized motor with phase magnetic separation capability mentioned in the present invention includes a complete stator composed of n stator modules and a rotor, and the complete stator and rotor are installed coaxially.
  • the stator module includes a stator core, three stator teeth and a concentrated winding.
  • the three stator teeth are the first stator tooth, the second stator tooth, and the third stator tooth.
  • a concentrated winding is wound on the second stator tooth. winding.
  • the magnetic force line generated by the armature winding on the second stator tooth only passes through the In the stator module, the magnetic force line does not pass through the second stator teeth of any other stator modules, so that magnetic isolation and physical isolation between different stator modules are realized.
  • the complete stator can be composed of n stator modules that are closely attached one after the other.
  • the complete stator can be composed of n stator modules evenly distributed along the circumference, and the n stator modules are fixed by external connecting pieces.
  • the external connecting member can be a magnetically conductive solid material, such as ordinary steel; it can also be a magnetically non-conductive solid material, such as stainless steel; or a hollow structure can also be used under the condition of ensuring structural rigidity.
  • the width of the first stator tooth is consistent with that of the third stator tooth.
  • the width of the first stator tooth and the third stator tooth may not coincide with the width of the second stator tooth.
  • each m stator modules constitute a unit m-phase motor, that is, n stator modules can be divided into k in turn
  • the modular motor with phase magnetic isolation capability of the present invention may be an outer rotor inner stator motor or an inner rotor outer stator motor.
  • the modularized motor with phase magnetic isolation capability of the present invention may be a surface-mounted permanent magnet motor, an embedded permanent magnet motor, or a switched reluctance motor.
  • the modular motor with phase magnetic isolation capability of the present invention can be a three-phase motor or a multi-phase motor.
  • the present invention adopts above-mentioned technical scheme, has following beneficial effect:
  • the stator modular structure disclosed in the present invention is a three-tooth structure in which the first stator teeth, the second stator teeth, and the third stator teeth are formed on the stator core, and the winding is only concentrated on the second stator teeth. After the winding is energized, a magnetic circuit is generated in the stator module that does not pass through the second stator teeth of other stator modules.
  • the first stator teeth and the third stator teeth of two adjacent stator modules not only realize the physical isolation between different stator modules but also The magnetic isolation between different stator modules is realized, the influence of the fault on the remaining phase is reduced, and the reliability of the motor operation is improved.
  • the stator modular structure is adopted, the stator is easy to process, and the mass production capacity is improved.
  • the winding process of the present invention is simple, and the ends of the windings are short and do not overlap each other, which effectively improves the motor slot fullness rate and reduces the manufacturing cost of the windings.
  • stator modular structure of the present invention is applicable to any unit-phase motor, and can overcome the defect that the existing modular stator structure is limited to three-phase unit motors.
  • Fig. 1 is a schematic diagram of the motor structure of Example 1 of the present invention.
  • Fig. 2 is a structural schematic diagram of the motor of Example 2 of the present invention.
  • Fig. 3 is a structural schematic diagram of the motor of Example 3 of the present invention.
  • Fig. 4 is a structural schematic diagram of the motor of Example 4 of the present invention.
  • Fig. 5 is a magnetic field simulation diagram of Embodiment 1 of the present invention.
  • Fig. 6 is a magnetic field simulation diagram of Embodiment 3 of the present invention.
  • stator module 1. stator module; 2. rotor; 3. concentrated winding; 4. first stator tooth; 5. second stator tooth; 6. third stator tooth; 7. independent sector; 8 .
  • the first phase stator module in a single independent sector; 9.
  • the second phase stator module in a single independent sector; 10.
  • the third phase stator module in a single independent sector; 11.
  • the first phase stator module in a single independent sector Four-phase stator module; 12. Fifth-phase stator module in a single independent sector; 13. External connections; 14. Magnetic field lines.
  • Example 1 Three-phase Modular Motor with Phase Magnetic Separation Capability
  • a three-phase modular motor with phase magnetic separation capability is an inner rotor outer stator motor
  • the modular motor includes a complete stator and a rotor 2, the complete stator and rotor 2 are coaxially installed, the complete
  • the stator is composed of fifteen stator modules 1 in sequence; the stator module 1 includes a stator core, three stator teeth and a concentrated winding winding 3, and the three stator teeth are the first stator teeth 4 and the second stator teeth in turn. 5.
  • the third stator tooth 6, a concentrated winding 3 is wound on the second stator tooth 5, the first stator tooth 4 and the third stator tooth 6 have the same width, the first stator tooth 4 and the third stator tooth 6
  • the width is inconsistent with the width of the second stator tooth 5.
  • the magnetic flux 14 shown in Figure 5 is generated after passing current to the concentrated winding.
  • the magnetic flux generated by the armature winding on the second stator tooth 5 only passes through the stator module 1 where it is located, and does not pass through the second stator module 1 of other stator teeth.
  • Stator teeth ie not coupled to armature windings on other stator modules 1 , achieve magnetic and physical isolation between different stator modules 1 .
  • the modular motor is a three-phase motor.
  • every three electronic modules constitute a unit three-phase motor, for example, to form a unit three-phase motor, that is, fifteen stator modules can be sequentially Divided into five unit three-phase motors, each unit three-phase motor belongs to an independent sector 7, the independent sector contains the first phase stator module 8 in a single independent sector, the second phase stator in a single independent sector Module 9, the third-phase stator module 10 in a single independent sector, because the present invention realizes magnetic isolation and physical isolation between different stator modules, so multiple unit three-phase motors divided on a complete stator can also realize unit Magnetic and physical isolation between three-phase motors.
  • a five-phase modular motor with phase magnetic separation capability is an inner rotor outer stator motor
  • the modular motor includes a complete stator and a rotor 2
  • the complete stator is coaxially installed with the rotor 2 .
  • the complete stator is composed of fifteen stator modules 1 that are closely connected in sequence; the stator module 1 includes a stator core, three stator teeth and a concentrated winding 3, and the three stator teeth are the first stator teeth 4 and the second stator teeth in turn.
  • the magnetic flux generated by the armature winding on the second stator tooth 5 only passes through the stator module 1 where it is located, and does not pass through the second stator teeth of other stator modules 1, that is, it is not coupled with the armature winding on other stator modules 1, Magnetic isolation and physical isolation between different stator modules 1 are realized.
  • the modular motor is a five-phase motor, starting from any stator module, every five stator modules constitute a unit five-phase motor, that is, fifteen stator modules can be divided into three unit five-phase motors in turn , each unit five-phase motor belongs to an independent sector 7, and the independent sector includes the first phase stator module 8 in a single independent sector, the second phase stator module 9 in a single independent sector, and the The third phase stator module 10, the fourth phase stator module 11 in a single independent sector, and the fifth phase stator module 12 in a single independent sector, because the present invention realizes magnetic isolation and physical isolation between different stator modules, Therefore, multiple unit five-phase motors divided on a complete stator can also realize magnetic isolation and physical isolation between unit five-phase motors.
  • a three-phase modular motor with phase separation capability is an inner rotor outer stator motor
  • the modular motor includes a complete stator and a rotor 2
  • the complete stator is coaxially installed with the rotor 2
  • the complete stator consists of six stator modules 1 that are evenly distributed along the circumference, and the six stator modules 1 are fixed by external connectors 13.
  • the external connectors 13 can be solid materials such as ordinary steel with magnetic conductivity, or stainless steel, etc. Non-magnetic solid material, or a hollow structure can be used under the condition of ensuring structural rigidity;
  • the stator module 1 includes a stator core, three stator teeth and a concentrated winding, and the three stator teeth are the first stator teeth in turn 4.
  • the magnetic flux 14 shown in Figure 6 is generated.
  • the magnetic flux generated by the armature winding on the second stator tooth only passes through the stator module 1 where it is located, and does not pass through the second stator of other stator modules 1.
  • the teeth, ie not coupled to the armature windings on other stator modules 1 achieve magnetic and physical isolation between different stator modules 1 .
  • the modular motor is a three-phase motor, starting from any stator module, every three stator modules constitute a unit three-phase motor, that is, six stator modules 1 can be divided into two unit three-phase motors in turn , each unit three-phase motor belongs to an independent sector 7, and the independent sector includes the first phase stator module 8 in a single independent sector, the second phase stator module 9 in a single independent sector, and the The stator module 10 of the third phase.
  • a three-phase modular motor with phase magnetic separation capability is an outer rotor inner stator motor
  • the modular motor includes a complete stator and a rotor 2, the complete stator and rotor 2 are coaxially installed, the complete The stator is composed of fifteen stator modules 1 in close contact with each other.
  • the difference from Embodiment 1 is that the stator teeth of the stator modules face the outside when assembling the complete stator so that the stator teeth are opposite to the inner wall of the rotor when coaxially installed with the rotor; the stator module 1 It includes a stator core, three stator teeth and a concentrated winding winding 3.
  • the three stator teeth are the first stator tooth 4, the second stator tooth 5, and the third stator tooth 6 in turn, and one is wound on the second stator tooth 5.
  • the winding 3 is wound intensively, the width of the first stator tooth 4 and the third stator tooth 6 are consistent, and the width of the first stator tooth 4 and the third stator tooth 6 is not consistent with the width of the second stator tooth 5 .
  • the magnetic flux generated by the armature winding on the second stator tooth 5 only passes through the stator module 1 where it is located, and does not pass through the second stator teeth of other stator modules 1, that is, it is not coupled with the armature winding on other stator modules 1, Magnetic isolation and physical isolation between different stator modules 1 are realized.
  • the modular motor is a three-phase motor. Starting from any stator module, every three stator modules constitute a unit three-phase motor, that is, fifteen stator modules can be divided into five unit three-phase motors in turn, Each unit three-phase motor belongs to an independent sector 7, and the independent sector includes the first phase stator module 8 in a single independent sector, the second phase stator module 9 in a single independent sector, and the The third phase stator module 10 .

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  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
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Abstract

本发明公开具有相间隔磁能力的模块化电机，属于发电、变电或配电的技术领域。该电机包括若干个定子模块和一个转子。若干个定子模块依次紧贴构成一个完整的定子；可选地，若干个定子模块沿圆周均匀分布，定子模块间通过外部连接件固定。定子模块包括三个定子齿和集中缠绕在中间定子齿上的电枢绕组。电枢绕组产生的磁通只经过其所在的定子模块，不经过其他定子模块，实现了不同定子模块之间的磁隔离和物理隔离。从任意定子模块起，连续的若干个定子模块位于同一个独立扇区，扇区内的所有定子模块和转子构成单元多相电机。本发明实现了电机不同绕组之间的物理隔离和磁隔离，提高了电机的电磁性能和运行可靠性，降低了电机的加工成本。

Description

具有相间隔磁能力的模块化电机 技术领域
本发明涉及电机驱动技术，具体涉及具有相间隔磁能力的模块化电机，属于发电、变电或配电的技术领域。
背景技术
目前，工业界普遍使用的电动汽车驱动电机多采用三相分布绕组，存在如下4种弊端：(1)绕组端部较长，用铜量多，电阻大，铜耗高；(2)自动化绕线工艺复杂，生产效率低；(3)绕组线圈间互感大，容错能力弱；(4)所有绕组只分为三相，每相匝数多，高速化之后对母线电压要求较高。具有模块化定子结构的电机因其加工简单，槽满率高，制造成本低而备受青睐。公开号为CN111313576A的中国专利公开了一种模块化永磁电机；公开号为CN109599958A的中国专利公开了一种高可靠性、高功率密度新型永磁电机，公开号为CN106787280A的中国专利公开了一种模块式三相交流永磁变频调速电机，公开号为CN108768016A的中国专利公开了一种绕组错位轮毂电机定子及绕组错位轮毂电机装置，公开号为CN1967970的中国专利公开了一种电机的定子组件及其制造方法，以上专利均提出了模块化定子结构的电机，但是所有定子齿上均缠绕有绕组，这导致不同绕组之间磁耦合严重，单绕组故障会影响其余绕组的正常运行。
具有高隔磁能力的模块化定子结构可以提高电机运行的可靠性，降低加工成本。公开号为CN111082548A的中国专利公开了一种定子模块化混合励磁交替极磁通反向电机，定子齿表面贴有永磁体，该结构的定子无法在转子永磁型电机上应用。公开号为CN101951041A的中国专利公开了一种模块化组合式电机定子结构及其应用，其隔磁齿与绕组齿尺寸完全相同，磁路设计不灵活，缺乏优化空间。公开号为CN101300729A的中国专公开了一种用于车轮的多相电机，采用E形定子模块，但是隔磁齿宽度与绕组齿相同，相邻两模块的隔磁齿拼接导致定子结构不对称，增大了空间谐波。公开号为CN103762759A的中国专利公开了一种具有高磁隔离能力的径向磁通模块化多相电机，该多相电机的子模块为五齿结构，且子模块的绕组反向缠绕，子模块的两套绕组相互耦合，隔磁齿利用率低。公开号为CN1862928A的中国专利公开了一种定子模块结构低速直流无刷电动机，定子模块结构实现了不同相之间的磁链解耦，但是局限于三相系统。
发明内容
本发明的发明目的是针对上述背景技术的不足，提供具有相间隔磁能力的模块化电机，该电机定子加工简单，绕组易于机械绕制，且具有高容错性，定子模块可用于定制各种类型的多相电机，实现相邻定子模块磁隔离和物理隔离的发明目的以及相邻单元电机模块磁隔离的发明目的，解决现有模块化定子结构磁路设计不灵活、隔磁齿利用率低及应用局限的技术问题。
本发明为实现上述发明目的采用如下技术方案：
本发明提到的具有相间隔磁能力的模块化电机，模块化电机包括由n个定子模块拼凑成的一个完整定子，以及一个转子，完整的定子与转子同轴安装。定子模块包括定子铁心、三个定子齿和一个集中绕制绕组，三个定子齿依次为第一定子齿，第二定子齿，第三定子齿，第二定子齿上绕制一个集中绕制绕组。
向集中绕制绕组通以电流，电流产生的磁力线的磁路为第二定子齿、第一定子齿、第三定子齿，第二定子齿上的电枢绕组产生的磁力线只经过其所在的定子模块，磁力线不经过任何其它定子模块的第二定子齿，实现了不同定子模块之间的磁隔离和物理隔离。
优选地，完整的定子可以由n个定子模块依次紧贴构成。
优选地，完整的定子可以由n个定子模块沿圆周均匀分布，n个定子模块由外部连接件固定。
优选地，外部连接件可以是导磁的实心材料，如普通钢；也可以是不导磁的实心材料，如不锈钢；或者也可以在保证结构刚度的情况下采用空心结构。
进一步地，第一定子齿和所述第三定子齿宽度一致。第一定子齿和第三定子齿的宽度可与第二定子齿宽度不一致。
进一步地，若电机为m相电机(m为整数且m≥3)，则从任意一个定子模块开始，每m个定子模块构成一个单元m相电机，即n个定子模块可依次划分为k个单元m相电机，每个单元m相电机属于一个独立扇区。应满足n＝k*m，其中，k代表独立扇区数量，k为整数且k≥1。
本发明的具有相间隔磁能力的模块化电机，可以是外转子内定子电机或内转子外定子电机。
本发明的具有相间隔磁能力的模块化电机，可以是表贴式永磁电机、内嵌式永磁电机、开关磁阻电机。
本发明的具有相间隔磁能力的模块化电机，可以是三相电机或者多相电机。
本发明采用上述技术方案，具有以下有益效果：
(1)本发明公开的定子模块化结构为在定子铁心上形成第一定子齿、第二定子齿、第三定子齿的三齿结构，仅在第二定子齿上集中绕制绕组，集中绕组通电后在定子模块中产生不经过其它定子模块第二定子齿的磁路，相邻两个定子模块的第一定子齿和第三定子齿不仅实现了不同定子模块之间的物理隔离还实现了不同定子模块之间的磁隔离，减小了故障相对剩余相的影响，提高电机运行的可靠性，采用定子模块化结构，定子加工方便，提高批量生产能力。
(2)本发明的绕组绕制工艺简单，绕组端部较短且相互不叠压，有效提高电机槽满率，降低绕组制造成本。
(3)本发明的定子模块化结构适用于任意单元相电机，能够克服现有模块化定子结构局限于三相单元电机的缺陷。
附图说明
图1是本发明实例1的电机结构示意图。
图2是本发明实例2的电机结构示意图。
图3是本发明实例3的电机结构示意图。
图4是本发明实例4的电机结构示意图。
图5是本发明中实施例1的磁场仿真图。
图6是本发明中实施例3的磁场仿真图。
图中标号说明：1、定子模块；2、转子；3、集中绕制绕组；4、第一定子齿；5、第二定子齿；6、第三定子齿；7、独立扇区；8、单个独立扇区内的第一相定子模块；9、单个独立扇区内的第二相定子模块；10、单个独立扇区内的第三相定子模块；11、单个独立扇区内的第四相定子模块；12、单个独立扇区内的第五相定子模块；13、外部连接件；14、磁力线。
具体实施方式
下面结合附图对发明的技术方案进行详细说明。
实施例1：具有相间隔磁能力的三相模块化电机
如图1所示，一种具有相间隔磁能力的三相模块化电机是内转子外定子电机，该模块化电机包括一个完整定子和一个转子2，完整的定子与转子2同轴安装，完整的定子由十五个定子模块1依次紧贴构成；定子模块1包括定子铁心、三个 定子齿和一个集中绕制绕组3，三个定子齿依次为第一定子齿4、第二定子齿5、第三定子齿6，第二定子齿5上绕制一个集中绕制绕组3，第一定子齿4和第三定子齿6宽度一致，第一定子齿4和第三定子齿6的宽度与第二定子齿5的宽度不一致。
向集中绕组通以电流后产生如图5所示的磁力线14，第二定子齿5上的电枢绕组产生的磁通只经过其所在的定子模块1，并不经过其它定子模块1的第二定子齿，即没有与其它定子模块1上的电枢绕组耦合，实现了不同定子模块1之间的磁隔离和物理隔离。
如图1所示，模块化电机为三相电机，从任意一个定子模块开始，每三个电子模块构成一个单元三相电机，例如，构成一个单元三相电机，即十五个定子模块可依次划分为五个单元三相电机，每个单元三相电机属于一个独立扇区7，独立扇区内包含单个独立扇区内的第一相定子模块8、单个独立扇区内的第二相定子模块9、单个独立扇区内的第三相定子模块10，因本发明实现不同定子模块之间的磁隔离和物理隔离，因此在一个完整定子上划分的多个单元三相电机也能实现单元三相电机之间的磁隔离和物理隔离。
实施例2：具有相间隔磁能力的五相模块化电机
如图2所示，一种具有相间隔磁能力的五相模块化电机是内转子外定子电机，该模块化电机包括一个完整定子和一个转子2，完整的定子与所述转子2同轴安装。完整的定子由十五个定子模块1依次紧贴构成；定子模块1包括定子铁心、三个定子齿和一个集中绕制绕组3，三个定子齿依次为第一定子齿4、第二定子齿5、第三定子齿6，第二定子齿5上绕制一个集中绕制绕组3，第一定子齿4和第三定子齿6宽度一致，第一定子齿4和第三定子齿6的宽度与第二定子齿5宽度不一致。第二定子齿5上的电枢绕组产生的磁通只经过其所在的定子模块1，并不经过其它定子模块1的第二定子齿，即没有与其它定子模块1上的电枢绕组耦合，实现了不同定子模块1之间的磁隔离和物理隔离。
如图2所示，模块化电机为五相电机，则从任意一个定子模块开始，每五个定子模块构成一个单元五相电机，即十五个定子模块可依次划分为三个单元五相电机，每个单元五相电机属于一个独立扇区7，独立扇区内包含单个独立扇区内的第一相定子模块8、单个独立扇区内的第二相定子模块9、单个独立扇区内的第三相定子模块10、单个独立扇区内的第四相定子模块11、单个独立扇区内的 第五相定子模块12，因本发明实现不同定子模块之间的磁隔离和物理隔离，因此在一个完整定子上划分的多个单元五相电机也能实现单元五相电机之间的磁隔离和物理隔离。
实施例3：具有相间隔磁能力的三相模块化电机
如图3所示，一种具有相间隔磁能力的三相模块化电机是内转子外定子电机，该模块化电机包括一个完整定子和一个转子2，完整的定子与所述转子2同轴安装；完整的定子由六个定子模块1沿圆周均匀分布，六个定子模块1之间由外部连接件13固定，外部连接件13可以是普通钢等导磁的实心材料，，也可以是不锈钢等不导磁的实心材料，或者也可以在保证结构刚度的情况下采用空心结构；定子模块1包括定子铁心、三个定子齿和一个集中绕制绕组，三个定子齿依次为第一定子齿4、第二定子齿5、第三定子齿6，第二定子齿5上绕制一个集中绕制绕组3，第一定子齿4和第三定子齿宽6度一致，第一定子齿4和第三定子齿6的宽度与第二定子齿5的宽度不一致。
向集中绕组通以电流后产生如图6所示的磁力线14，第二定子齿上的电枢绕组产生的磁通只经过其所在的定子模块1，并不经过其它定子模块1的第二定子齿，即没有与其它定子模块1上的电枢绕组耦合，实现了不同定子模块1之间的磁隔离和物理隔离。
如图3所示，模块化电机为三相电机，则从任意一个定子模块开始，每三个定子模块构成一个单元三相电机，即六个定子模块1可依次划分为两个单元三相电机，每个单元三相电机属于一个独立扇区7，独立扇区内包含单个独立扇区内的第一相定子模块8、单个独立扇区内的第二相定子模块9、单个独立扇区内的第三相定子模块10。
实施例4：具有相间隔磁能力的三相模块化电机
如图4所示，一种具有相间隔磁能力的三相模块化电机是外转子内定子电机，该模块化电机包括一个完整定子和一个转子2，完整的定子与转子2同轴安装，完整的定子由十五个定子模块1依次紧贴构成，与实施例1不同的是拼凑完整定子时将定子模块的定子齿朝向外侧以便与转子同轴安装时定子齿与转子内壁相对；定子模块1包括定子铁心、三个定子齿和一个集中绕制绕组3，三个定子齿依次为第一定子齿4、第二定子齿5、第三定子齿6，第二定子齿5上绕制一个集中绕制绕组3，第一定子齿4和第三定子齿6宽度一致，第一定子齿4和 第三定子齿6的宽度与第二定子齿5的宽度不一致。第二定子齿5上的电枢绕组产生的磁通只经过其所在的定子模块1，并不经过其它定子模块1的第二定子齿，即没有与其它定子模块1上的电枢绕组耦合，实现了不同定子模块1之间的磁隔离和物理隔离。
如图4所示，模块化电机为三相电机，从任意一个定子模块开始，每三个定子模块构成一个单元三相电机，即十五个定子模块可依次划分为五个单元三相电机，每个单元三相电机属于一个独立扇区7，独立扇区内包含单个独立扇区内的第一相定子模块8、单个独立扇区内的第二相定子模块9、单个独立扇区内的第三相定子模块10。
以上所述仅为本发明的四种实施例，本发明的实施例不局限于上述四个实施例，本领域技术人员根据本发明的发明构思做出的其它实施例均落入本发明的保护范围。

Claims (10)

  1. 具有相间隔磁能力的模块化电机，包括同轴安装的转子以及定子，其特征在于，所述定子由多个定子模块构成，每个定子模块的定子铁心为具有第一定子齿、第二定子齿、第三定子齿的三齿结构，所述第二定子齿上绕制有集中绕制绕组。
  2. 根据权利要求1所述具有相间隔磁能力的模块化电机，其特征在于，所述第一定子齿和第三定子齿的宽度一致。
  3. 根据权利要求1所述具有相间隔磁能力的模块化电机，其特征在于，所述定子由所述多个定子模块沿圆周依次紧贴构成。
  4. 根据权利要求1所述具有相间隔磁能力的模块化电机，其特征在于，所述定子由所述多个定子模块沿圆周非紧贴均匀分布构成，多个定子模块由外部连接件固定。
  5. 根据权利要求1所述具有相间隔磁能力的模块化电机，其特征在于，所述模块化电机为外转子内定子电机时，多个定子模块定子铁心的三齿结构朝向径向外侧与转子径向内侧相对。
  6. 根据权利要求1所述具有相间隔磁能力的模块化电机，其特征在于，所述模块化电机为内转子外定子电机时，多个定子模块定子铁心的三齿结构朝向径向内侧与转子径向外侧相对。
  7. 根据权利要求1所述具有相间隔磁能力的模块化电机，其特征在于，相邻定子模块定子铁心的第二定子齿上绕制集中绕制绕组的方向相同。
  8. 根据权利要求1所述具有相间隔磁能力的模块化电机，其特征在于，相邻定子模块定子铁心的第二定子齿上绕制集中绕制绕组的方向不同。
  9. 根据权利要求1所述具有相间隔磁能力的模块化电机，其特征在于，所 述模块化电机为m相电机时，m为整数且m≥3，从任意一个定子模块开始，每m个定子模块构成一个单元m相电机，将n个定子模块依次划分为k个所述单元m相电机，每个所述单元m相电机属于一个独立扇区，n＝k*m，其中，k为独立扇区数量，k为整数且k≥1。
  10. 根据权利要求1所述具有相间隔磁能力的模块化电机，其特征在于，所述模块化电机为表贴式永磁电机或内嵌式永磁电机或开关磁阻电机。
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