IGBTs were first introduced as a combination of the bipolar junction transistor (BJT) and the metal oxide semiconductor field effect transistor (MOSFET) technology. The IGBT is to prefer in medium high voltage segments (600- 3000V) rather than

This paper deals with digital control of a series active filter integrated with a diode rectifier where the series active fdter is controlled to function as a current source. A predictive current regulator is considered for the series ac-

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