Abstract：In direct torque control (DTC) schemes for induction machine, a hybrid stator flux linkage model is presented to solve the transition between voltage-current-based model and current-speed- based model, so the accuracy of flux estimation is improved. Meanwhile, the number of available voltage vectors is limited and its duration time is unreasonable in conventional direct torque control scheme, so more effective voltage vectors, which are based on improved switching table, can be obtained by using discrete space vector modulation technique. The comparative simulation results show the reduction of torque ripple comparing with conventional scheme. Finally, some experiments are carried out to confirm the effectiveness of the presented method.
张兴, 魏冬冬, 杨淑英, 谢震. 基于DSVM混合磁链模型感应电机直接转矩控制[J]. 电工技术学报, 2010, 25(11): 62-67.
Zhang Xing, Wei Dongdong, Yang Shuying, Xie Zhen. DTC System Based on Hybrid Flux Linkage Model and Discrete Space Vector Modulation. Transactions of China Electrotechnical Society, 2010, 25(11): 62-67.
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2010, Vol. 25 
