电动车用永磁无刷电机无位置传感器控制研究

Research on Position Sensorless Control of Permanent Magnet Brushless Motor for Electric Vehicle

针对传统电动车用永磁无刷直流电机中位置传感器所带来的一系列缺点,基于模型参考自适应法的原理,建立了正弦型永磁无刷直流电机模型参考自适应方法的数学模型。在Matlab/Simulink环境下构建了无位置传感器运行仿真系统,对无位置传感器进行仿真研究。实验和仿真结果表明,模型参考自适应方法可准确检测电机转子位置信号,基本满足了电动车用永磁无刷直流电机的运行要求。

For a series of shortcomings brought by position sensor of permanent magnet brushless DC motor for the traditional electric vehicles, based on model reference adaptive principle, the mathematical model of model reference adaptive method of sinusoidal permanent magnet brushless DC motor was established. In Matlab/ Simulink environment the position sensorless operation simulation system was constructed and simulation re- search was done for position sensorless. The results of the simulation and experiment showed that model refer- ence adaptive method can detect accurately the rotor position signal, basically meeting the needs of the perma- nent magnet brushless DC motor operation requirements for electric vehicles.