同步电动机功率因数调节的模糊控制

Fuzzy control of power factor adjustment for synchronous motor

针对同步电动机的非线性、参数实变及数学模型的复杂性 ,提出了一种以模糊控制策略为主的功率因数调节方法。在此控制系统中 ,励磁电流调节为内环 ,主要作用是保持励磁电流的稳定性和励磁调节的快速性 ;外环为功率因数调节环 ,采用模糊 -I的复合控制。实验结果证明 ,采用该方法的同步电动机在功率因数调节中可以获得比较理想的动态和静态特性 ,优越性明显。

Focusing on the importance of power factor adjustment,a hybrid control method on the primary controller and secondary current governor is put forward.Within the control system,current adjuster is the inner race.The power factor adjustment needs changing exciting current so as to keep stabilization of the current.The outer race is power factor feedˉback loop that adopts fuzzy-I complex controller to solve the nonlinearity,parameter time-variation and the mathematical model complexity of the synchronous motors.The simulation and analysis results showthat the andvantage and effectiveness of this method are clear superiority in the power factor adjustment.