This paper describes a torque ripple reduction technique with constant switching frequency for direct torque control (DTC) of an induction motor (IM). This method enables a minimum torque ripple control. In order to obtain a constant switching freq

随着异步电机开始在交流调速领域占统治地位，针对高性能异步电机的调速系统 研究得到广泛关注。特别是 20 世纪 80 年代直接转矩控制（DTC）的出现，以其简洁高 效的控制方式，进一步提高异步电机的性能。但传统 DTC 存在转矩和磁链滞环宽度使 得稳态时也会产生转矩脉动。因此高性能控制需要窄的滞环宽度,相应要求高逆变器开 关频率。大功率场合下必须低开关损耗和良好转矩控制性能，传统 DTC 难以同时满足 需求。 -With the beginning of the AC in

Induction motor drive based on direct torque control (DTC) allows high dynamic performance to be obtained with very simple hysteresis control scheme. Once the DTC is fully and deeply described, its main drawbacks are introduced. One of the goals of