同步调相机高速段转子位置估算算法研究

Research on Rotor Position Estimation Algorithm of Synchronous Compensator at High Speed

大型同步调相机在运行过程中,需要对转子位置进行快速高精度的检测。位置检测的精度、速度直接影响同步调相机运行的稳定性、效率等各项参数。针对传统锁相环磁链法在调相机高速段受低频谐波干扰大的问题,引入了二阶广义积分滤波器和模糊控制对传统锁相环进行了改进,有效提高了位置检测对谐波的滤除能力和检测速度、精度。对于从低速位置传统锁相环检测模块切换到高速改进锁相环位置检测模块时误差较大的问题,设计柔性切换位置估算模块。最后,在Matlab软件中搭建相应的位置估算系统,通过对比仿真验证了所设计的位置估算方法的正确性。

During the operation of large synchronous compensator,it is necessary to detect the rotor position quickly and accurately. The accuracy and speed of position detection directly affect the stability,efficiency and other parameters of synchronous compensator. The two order generalized integral filter and fuzzy control were introduced to improve the traditional phase locked loop(PLL). It effectively improved the ability of location detection to remove harmonics and the speed and accuracy of detection. A flexible switch location detection module was designed,the problem of large error in switching from low-speed position detection module to high-speed,improved PLL position detection module was deduced. Finally,the corresponding position detection system was built in the Matlab software,and the correctness of the location detection method was verified by comparative simulation.