基于PR调节器的电励磁同步电机系统仿真研究

Simulation Research on the Electric Excitation Synchronous Motor System Based on PR Regulator

在基于气隙磁场定向的电励磁同步电机矢量控制系统中,控制器多数采用PI调节器并且需要进行复杂的坐标变换,影响系统的动态和稳态性以及鲁棒性。分析了PR调节器的特点,并在电励磁同步电机数学模型的基础上,提出了一种基于PR调节器的电励磁同步电机矢量控制方法,同时该系统还加入了电流预控环节并采用混合磁链观测器。理论分析和仿真结果表明:基于PR调节器的电励磁同步电机的矢量控制方法可以很好地实现电励磁同步电机的四象限运行,并能保持气隙磁链的恒定,表现出了较好的控制性能。

In the electric excitation synchronous motor control system based on the air-gap magnetic field orientation,PI regulator is usually u s e d , and complex coordinate transformation is also needed, which influences the dynamic andsteady-state of the system and robustness. PR controller was analyzed, then an electric excitation synchronous motor vectorcontrol method based PR controller was proposed and the method was based on the electric excitation synchronous motormathematical model. Meanwhile, the current pre-control loop and mixed flux observer were also adopted in the system. Theoryanalysis and simulation results show that the electric excitation synchronous motor vector control based on PR controllercan well realize four quadrant operation and maintain a constant air gap flux linkage, showing better control performance.