Investigations on a Three-dimensional Model of the Moving-coil Linear Motor Applied in the Space-borne Micro Compressor

[摘要] In order to optimize the magnetic circuits of the linear motor applied in the space-borne pulse tube cryocooler, a three-dimensional magnetostatic field model of the moving-coil linear motor in the micro compressor is established. The effects of several key dimensions on the distributions of the magnetic flux density inside the air gap are simulated and discussed by finite element method. The simulated results show that the magnetic flux density decreases with the increase of both width and thickness of air gap. According to the analysis, it will greatly facilitate the design, fabrication and future practical applications of the micro moving-coil linear compressor.

[发布机构] Shanghai Institute of Measurement and Testing Technology, Shanghai; 201203, China^1;Shanghai Key Laboratory of Online Test and Control Technology, Shanghai; 201203, China^2

[效力级别] 无线电电子学 [学科分类] 航空航天科学

[关键词] Key dimensions;Linear compressors;Magnetostatic field;Moving coils;Pulse tube cryocoolers;Simulated results;Space-borne;Three-dimensional model