【摘要】 在无刷直流电动机(BLDCM)和永磁同步电动机(PMSM)仿真研究中,通常采用不同的仿真模型。但是,两种电机结构相似,完全有可能用一个仿真模型统一起来。在对电机结构和反电势产生机理详细分析的基础上,引入一个反电势波形函数来拟合两种电机的反电势,建立了二者的统一仿真模型。当反电势波形系数较小时,反电势逼近梯形波,此时可仿真BLDCM;当波形系数较大时,反电势逼近正弦波,此时可仿真PMSM。与常规仿真模型相比,统一的仿真模型应用更加方便,而且能较好地逼近反电势的实际波形。在Matlab/Simulink下的仿真结果表明,建立的仿真模型是可行的。更多还原

【Abstract】 Both Brushless DC Motors (BLDCM) and Permanent-magnet Synchronous Motors (PMSM) are AC motors with permanent-magnet rotors and similar structures. And it is possible to use one unified model to simulate the two motors. A waveform function was adopted to fit the EMF of BLDCM and PMSM, and a unified simulation model was established. Then PMSM and BLDCM could be simulated conveniently by changing the coefficient of the waveform function. Compared to conventional model, the unified one is more conventional, and it can approach the real waveform better. Simulation results in Matlab/Simulink indicate that the unified model is feasible.更多还原