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Novel permanent magnet motor with high reliability and high power density

A high power density, permanent magnet motor technology, applied in the aerospace field, can solve the problem that the cooling system is difficult to meet the high power-to-weight ratio, and achieve the effect of increasing phase independence, improving fault tolerance performance, and increasing winding slot fullness

Inactive Publication Date: 2019-04-09
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extra weight of the cooling system is difficult to meet the high power-to-weight ratio requirements in the fields of aerospace and all-electric aircraft

Method used

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  • Novel permanent magnet motor with high reliability and high power density
  • Novel permanent magnet motor with high reliability and high power density
  • Novel permanent magnet motor with high reliability and high power density

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0037] Please refer to figure 1 , The present invention is a high reliability, high power density design method for a permanent magnet motor, comprising a stator 1, a rotor 2, and an air gap between the stator 1 and the rotor 2. The slots 14 of the stator 1 are used to place windings. For the specific structure and proportional relationship of rotor 2, see figure 2 .

[0038] A novel permanent magnet motor with high reliability and high power density, comprising a stator (1) and a rotor (2); the stator (1) comprises a modular stator structure (11), an isolated strip structure (12), an armature Windings (14), slot wedges (15); the modular stator structure (11) includes a stator yoke (16) and a stator tooth (17), and the armature winding (14) is wound on the stator tooth (1...

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Abstract

The invention discloses a novel permanent magnet motor with high reliability and high power density. A stator adopts a modular structure, an isolated strip-shaped structure is designed at the center of a groove to match a modular main stator core, and a winding adopts a fractional slot concentrated winding structure having a span of 1. A rotor can adopt a conventional surface patching structure, ahighly polymagnetic Hallbach permanent magnet array structure or a built-in permanent magnet structure. The novel permanent magnet motor has the advantages of greatly improving the winding process bymeans of the matching of the modular stator structure, the isolated strip-shaped structure and a cross section shape of a conducting wire, thereby improving the slot filling rate of the motor from the processing technology. In addition, through the thermal conduction and magnetic isolation functions of the isolated strip-shaped structure, the performance indexes such as the electromagnetic torqueand the amount of permanent magnets and the like of the motor are basically not affected while reducing the motor winding temperature and improving the interphase independence of the winding.

Description

technical field [0001] The invention relates to the aerospace field, in particular to a permanent magnet motor with high reliability and high power density. Background technique [0002] The permanent magnet motor has the characteristics of simple structure, small size and high efficiency, so it has good application scenarios in many occasions such as aerospace, all-electric aircraft and electric vehicles. At present, the research on permanent magnet motors mainly focuses on the improvement of power density. Many literature studies have shown that the improvement of power density needs to rely on higher electrical load and higher number of rotor poles, but this will make the motor stator iron loss, winding copper loss and rotor eddy current loss too large, which will bring extreme heat dissipation to the motor. big difficulty. The temperature in the motor will inevitably affect the magnetic properties of the permanent magnets. When the temperature is too high, the permanen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K1/14H02K9/22
CPCH02K1/12H02K1/146H02K9/22H02K2213/03
Inventor 赵文祥郑军强吉敬华
Owner JIANGSU UNIV
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