表贴式永磁电机阻抗小对输入电压十分敏感，为此需要得到足够准确的电压值才能进行电压源激励下的仿真研究。传统相量图需要较准确的电机模型及参数才能获得端口电压。为此，本文提出一种基于端口等效电路的相量图的有限元稳态仿真方法。该方法仅需计算定子电阻和端部漏感参数，然后采用电流源激励二分法获取较准确的输入电压，并通过时域有限元进行仿真验证。%The impedance of surface permanent magnet synchronous machine ( SPMSM) is small and very sensitive to the input voltage, so enough precise voltage is required for the simulation under the voltage source. The traditional phase diagram needs more precise model and parameters of electric machine to get the port voltage. So this paper proposes a method of finite element steady state simulation that based on the equivalent circuit of port voltage. This method just needs to calculate the resistance of windings and the leakage inductance of the end, then uses bisection algorithm under the current source to get more precise input voltage, and verified by time-domain finite-element simulation( TDFES) .
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