Abstract：Current controller plays an important role in achieving rapid and accurate torque or speed control of vector-controlled induction motors. However, cross-coupling caused by the reference frame transformation, which increases with the synchronous frequency, impairs the characteristics of torque response. Meanwhile, the signal delay increases undesired cross coupling, which may have a significant impact on high power and low switching AC drive system, and may even lead to system instability. In order to achieve good decoupling performance, more accurate and complete induction motor model based on complex vector is established, and a decoupling current control scheme is proposed. The time-delay and corresponding compensation strategy are also studied in this paper. Based on complex vector frequency-response functions, the dynamic decoupling performance and the robust of the scheme are analyzed. Experimental results show the method proposed can effectively improve the dynamic performance of induction motors.
齐丽英, 王琛琛, 周明磊, 王剑. 一种异步电机的电流环解耦控制方法[J]. 电工技术学报, 2014, 29(5): 174-180.
Qi Liying, Wang Chenchen, Zhou Minglei, Wang Jian. A Decoupling Current Control Scheme for Induction Machine Controllers. Transactions of China Electrotechnical Society, 2014, 29(5): 174-180.
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