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Axial magnetic flow modularized multi-phase motor having high magnetic isolation capacity

A technology of isolation capability and axial flux, applied to synchronous motors with stationary armatures and rotating magnets, etc., can solve the problems of difficult fault-tolerant control, unfavorable fault isolation design into a modular structure, etc., to achieve convenient large-scale Processing and manufacturing, manufacturing and maintenance costs are low, and the effect of improving power density

Active Publication Date: 2014-04-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the fault-tolerant control is difficult when the one-phase winding of the existing multi-phase permanent magnet synchronous motor is short-circuited; due to the scattered distribution of the winding space, it is not conducive to fault isolation and the problem of designing a modular structure. An Axial Flux Modular Multiphase Motor with High Magnetic Isolation Capability

Method used

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  • Axial magnetic flow modularized multi-phase motor having high magnetic isolation capacity
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  • Axial magnetic flow modularized multi-phase motor having high magnetic isolation capacity

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specific Embodiment approach 1

[0021] Specific implementation mode one: the following combination Figure 1 to Figure 11 This embodiment is described. The axial flux modular multiphase motor with high magnetic isolation capability described in this embodiment includes two modular stators 1, a disc rotor 2, a casing 3 and a main shaft 11. Two modules A modular stator 1 and a disc rotor 2 are arranged inside the casing 3; a modular stator 1, a disc rotor 2 and another modular stator 1 are arranged on the main shaft 11 in sequence along the axial direction; two modular stators 1 and the disc There is an air gap between the rotors 2 in the axial direction, and the length of the air gap is L;

[0022] Each modular stator 1 includes N identical stator modules, and the N identical stator modules are spliced ​​into a disc shape; each stator module includes a stator core 4, five stator teeth 5 and two concentrated windings 6. Five stator teeth 5 are set on the stator core 4; the included angles of the sectors where...

specific Embodiment approach 2

[0039] Specific implementation mode two: the following combination figure 2 , image 3 , Figure 5 and Figure 8 This embodiment will be described. This embodiment will further describe Embodiment 1. A wedge-shaped piece 9 is processed on the stator yoke where the stator teeth 5 with an angle of [360×(0.13±0.01) / N]° of each stator module are located. N dovetail grooves 10 are arranged on the inner circular surface of the casing 3 , and the wedge-shaped piece 9 cooperates with the dovetail grooves 10 to be fixed.

[0040] The N stator modules adopt a detachable structure during processing and installation.

[0041]It is necessary to process a wedge 9 on the yoke of each stator module, and open a dovetail groove 10 on the casing 3. The inner diameter of the casing 3 is equal to the outer diameter of the modular stator 1. The two adopt clearance fit, and the N stator modules Nested in the casing 3.

specific Embodiment approach 3

[0042] Embodiment 3: In this embodiment, Embodiment 1 is further described. Both the stator core 4 and the rotor core 7 are made of soft magnetic composite materials.

[0043] It is convenient for processing and manufacturing, and reduces eddy current loss.

[0044] When the stator module is processed, it can be molded at one time using soft magnetic composite materials. This implementation mode has simple procedures, can increase the speed of processing and manufacturing, and is beneficial to mass production.

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Abstract

The invention discloses an axial magnetic flow modularized multi-phase motor having a high magnetic isolation capacity, belongs to the field of motors, and aims to solve the problem of high fault-tolerant control difficulty in case of short circuit of one phase of winding in the conventional multi-phase permanent magnet synchronous motor and the problem of badness to fault isolation and modularized structural design due to dispersed distribution of a winding space. The axial magnetic flow modularized multi-phase motor comprises two modularized stators, a disk-type rotor, a shell and a main shaft, wherein the two modularized stators and the disk-type rotor are arranged inside the shell; one modularized stator, the disk-type rotor and the other modularized stator are arranged in sequence on the main shaft in an axial direction; air gaps are formed between the two modularized stators and the disk-type rotor along the axial direction; in each modularized stator, N same stator modules are spliced into a disk; each stator module comprise a stator core, five stator teeth and two centrally-wound windings; in the disk-type rotor, a disk surface on any side of the rotor core is provided with 2N+ / -2 permanent magnets magnetized oppositely and alternatively in the axial direction.

Description

technical field [0001] The invention relates to an axial flux modular multiphase motor with high magnetic isolation capability, belonging to the field of motors. Background technique [0002] Multi-phase permanent magnet synchronous motors have fault-tolerant operation capabilities due to redundant phase numbers, and are suitable for applications that require high reliability of drive motors, such as multi-electric aircraft, pure electric vehicles, and electric propulsion ships. The multi-phase permanent magnet synchronous motor with distributed winding or ordinary fractional slot concentrated winding structure has the disadvantage of large magnetic coupling between phases. When a short-circuit fault occurs in one phase winding of the motor, due to the magnetic coupling between the windings, the magnetic flux generated by the short-circuited phase winding will induce a counter electromotive force in the remaining phase winding, which will affect the control effect of the rem...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K21/24
Inventor 郑萍吴帆佟诚德王伟男朱少洪
Owner HARBIN INST OF TECH
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