Review on Lightweight and High Efficiency Permanent Magnet Motor and Its Control Techniques

doi:10.11985/2023.04.002

Abstract

Abstract:

The lightweight and high efficiency design of the motor system is conducive to improve the carrying capacity and extend the endurance, which has become the core demand of the development of major equipment. Firstly, the key design technology of lightweight permanent magnet motor is expounded from the aspects of high electric load, high magnetic load and high linear speed. Then, the design method of high efficiency permanent magnet motor is described from the different loss suppression in the motor. Moreover, the high-precision thermal analysis and high-efficiency thermal management are analyzed to ensure the reliable operation of lightweight and high-efficiency permanent magnet motor. In order to achieve the purpose of lightweight and high efficiency of the control system, the maximum torque per ampere and maximum efficiency per ampere are analyzed. Finally, based on the development status of high efficiency and lightweight permanent magnet motor, the future development trend is prospected.

Key words: Permanent magnet motor, lightweight, high efficiency, thermal analysis and cooling

CLC Number:

TM351

CHEN Qian, ZHAO Meiling, LIAO Jihong, LIU Guohai, ZHAO Wenxiang. Review on Lightweight and High Efficiency Permanent Magnet Motor and Its Control Techniques[J]. Journal of Electrical Engineering, 2023, 18(4): 3-19.

Figures/Tables 29

References 95

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参数	钐钴永磁	钕铁硼永磁
剩磁感应强度B_r/T	0.87~1.19	1.075~1.49
磁感矫顽力H_cj/(kA/m)	1 350~2 400	955~2 706
最大磁能积(BH)_m/(kJ/m³)	143~265	223~430
温度系数B_r /(%/K)	-0.11~-0.13	-0.03~-0.04
温度系数H_c /(%/K)	-0.55~-0.65	-0.15~-0.30
最高工作温度t/℃	250~350	80~220

电机类型	效率(%)	功率密度/(kW/kg)	文献/电机型号
表贴式	96	6	文献[16]
表贴式	>95	10.63	KDE 295-G3
内置式	>94	2.55	Camry
内置式	97	1.7	2017 Prise
Halbach式	>96	8.16	Launchpoint
Halbach式	96	13	文献[17]
轮辐式	97	7	文献[18]

功率/kW	转速/(r/min)	功率密度/(kW/L)	文献
150	24 000	14.097	[41]
120	70 000	34.104	[42]
117	60 000	29.723	[43]
7.5	15 000	6.06	[44]
3.5	87 500	27.516	[45]