Based on analyzing permanent magnet’ s temperature influence on its performance,an improved fi-nite element method was proposed to calculate the magnet torque.Simulating the electromagnetic field of the magnet’ s mathematical model with Ansoft and comparing the result with the measured result show that the er-ror between improved torque value and measured value is smaller.%在分析温度对永磁体性能影响的基础上，提出一种改进的有限元计算转矩方法，并利用Ansoft软件对永磁调速器的数学模型进行电磁场仿真计算，结果表明：改进后永磁调速器的输出转矩与实测值的误差更小。
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