%0 Journal Article %T COMPARISON OF CASCADE MULTILEVEL MEDIUMVOLTAGE CONVERTERS %J 电力系统自动化 %D 2002 %X Mediumvoltage adjustablefrequencydrive (AFD) systems for the save of electrical energy have been developed during recent years. There are various converter configurations, but the detail control methods are rarely in publications. This paper describes two novel control strategies for mediumvoltage AFD systems, and analyzes output waveforms and their spectrums %K AFD of mediumvoltage %K commonmode voltage %K harmonics %K AFD of mediumvoltage %K commonmode voltage %K harmonics %U http://www.aeps-info.com/aeps/article/abstract/11365?st=article_issue