223. Finite Element Analysis and Optimization for Magnetic Circuit System of Moving-Coil Linear Compressor

In order to solve the calculation problem which was caused by the large mesh quantity and convergent issue when finite element model was established according to the real magnetic circuit system structure of moving-coil linear compressor, a new modeling method was proposed. Based on ANSYS parametric design language, a parametric finite element model for magnetic circuit system of moving-coil linear compressor was established and the magnetic analysis was carried out. The validity and reliability of the finite element model was verified through magnetic experiment. According to the magnetic analysis results, the structural optimization design for magnetic circuit system was accomplished and a reasonable schematic was achieved. The optimization results show that not only the magnetic induction of gas gap is increased by 28.16%, but a permanent magnet is also operating at the optimal point and the magnetic saturation of iron core has been removed thoroughly.