Abstract：Aiming at the saturation nonlinearity of the speed control loop for direct torque controlled induction motor driving system, a novel anti-windup PI controller is proposed, and the stability condition of the speed closed-loop control is given. The proposed method separately control the integral state by feedbacking the output of the integrator to the input port of the integrator according to whether the controller output is saturated or not, which can make the system leaving saturation as soon as possible. As a result, the overshoot and settling time of the system are reduced. Simulation and experimental results show that this method can significantly suppress the integral windup phenomenon as well as reduce the overshoot and shorten the settling time. The control performance superiors to the conventional anti-windup control method.
张兴华, 姚丹. 感应电机直接转矩控制系统的“抗饱和”控制器设计[J]. 电工技术学报, 2014, 29(5): 181-188.
Zhang Xinghua, Yao Dan. Anti-Windup Speed Controller Design for Direct Torque Controlled Induction Motor Drives. Transactions of China Electrotechnical Society, 2014, 29(5): 181-188.
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