高效永磁调速器的损耗计算与分析

针对高效永磁调速器各部件的电磁损耗相关问题,以一台1 MW高效永磁调速器为例,基于对损耗的理论分析和涡流场理论,建立了运动涡流场的三维有限元分析模型.利用时步有限元法,对1 MW高效永磁调速器的铜盘损耗、永磁体涡流损耗以及永磁体背衬钢盘对转矩的影响进行了详细的分析与计算.通过对1 MW高效永磁调速器的实验分析和有限元仿真,验证了分析与计算的正确性和规律的实用性.最后深入分析了分段永磁体对永磁体涡流损耗的影响,为永磁调速器的效率分析、散热设计以及损耗优化提供了理论依据.

Loss Calculation and Analysis of Efficient Permanent Magnet Coupler

In allusion to the problems of electromagnetic loss of the permanent magnet coupler(PMC), a 1MW efficient PMC was utilized. Based on the theoretical analysis of loss and the theory of eddy current field, a three-dimensional finite element model of the eddy current field is established. The time-stepping finite element method is used to detailedly analyze and calculate the copper plate loss, permanent magnet eddy current loss and the torque of PM back iron of the 1MW PMC.The correctness and practicability of the analysis and calculation are validated by the experiment analysis and finite element simulation. Finally, the influence of the segmented permanent magnet on the eddy current loss is analyzed. It provides the theoretical basis for the efficiency analysis, heat dissipation design and loss optimization of PMC.