Analysis and optimization of the excitation coils in the miniature linear compressor

doi:10.7523/j.ucas.2024.043

Abstract

Abstract: Vapor compression refrigeration can operate electronic devices at lower temperatures even under harsh conditions, but it faces critical challenges in miniaturization and oil-free operation. This paper conducts a detailed analysis and optimization of the excitation coil of the linear compressor using finite element analysis. The optimization allows the coil to be more compactly integrated with the outer stator core, further reducing the compressor's volume. A bobbinless coil was developed to increase the slot fill factor, resulting in a more compact structure. Simulation comparisons demonstrate effective enhancements in motor output capacity and efficiency. A prototype was constructed, featuring a linear motor with dimensions of ø61×36 mm. Experimental measurements of the electromagnetic force coefficient closely match the simulation results at 21.34 N·A^-1. Voltage regulation experiments were also conducted under oil-free conditions, confirming that the device can maintain its performance while achieving miniaturization and oil-free operation.

Key words: linear compressor, linear motor, finite element analysis, electronics cooling

CLC Number:

TB652

YANG Xuan, ZHOU Haojie, LI Ji. Analysis and optimization of the excitation coils in the miniature linear compressor[J]. Journal of University of Chinese Academy of Sciences, DOI: 10.7523/j.ucas.2024.043.

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