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 induction motor speed control field dominance, speed control system for high-performance induction motor research has been widespread concern. Especially in the 1980s, Direct Torque Control (DTC) appeared, with its simple and efficient way to control and further improve the performance of asynchronous motor. However, the existence of traditional DTC will produce torque and torque ripple flux hysteresis width when making steady. Therefore, high-performance control requires a narrower hysteresis width, corresponding demanding inverter switching frequency. Where high power must be low switching losses and good torque control performance is difficult to meet the needs of traditional DTC.