【摘要】 内嵌式永磁同步电机(IPMSM)具有好的转矩性能和宽的调速范围,但其电流控制器需要精确的参数模型,由于饱和效应影响,电感参数会随运行条件不同发生改变,控制器受耦合影响,系统容易出现速度及转矩超调、扰动等现象。为了提高IPMSM恒转矩及恒功率区的控制性能,本文设计了一种改进型电流解耦控制器。控制器基于模型参考自适应法对参数进行在线检测,检测系统加入了前馈及闭环反馈,保证了参数检测的准确性及鲁棒性。这种解耦电流控制器结构简单、紧凑,有效改善了控制性能。实验和仿真结果表明,这种改进型控制器能有效准确的实时在线检测参数,同时使得整个系统响应速度快、无超调、系统转速稳定无扰动现象,能明显地提升系统性能。更多还原

【Abstract】 Interior permanent magnet synchronous motor(IPMSM) is better suited to high performance torque drive and wide speed range applications; however the accurate parameters of the IPMSM are needed. Due to the saturation effect, the inductances are changed in different conditions, because of the coupling phenomenon. The speed and the torque of the system will be disturbed and overshoot. This paper presents an improved decoupling control strategy for the IPMSM which is based on the parameters online estimation. The strategy improves the control performance in the full range of the system. The feedforward and closed-loop feedback parts are added to ensure the accuracy and robustness of parameter detection. The structure of the decoupling controller is simple and compact, which is obviously improved the control performance. Simulation and experiments show that the system has a faster speed response and no disturbance and overshoot phenomenon and can significantly improve the system performance.更多还原