A new, patented direct AC-AC power converter using a novel circuit topology and charge allocation control methodology solves the problems of high harmonics and damaging dV/dt experienced with PWM-based variable speed drives (VSDs). This paper presents experimental results from a 25 kW, 3-phase 208 V AC-link~(TM) prototype used to drive an induction motor at varying speeds. The system exhibits dV/dt of 1-2 V/us and total harmonic distortion of 3% without costly add-on components.
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机译：一种新的专利直接AC-AC电源转换器，使用新颖的电路拓扑和电荷分配控制方法解决了基于PWM的变速驱动器（VSD）的高谐波和损坏DV / DT的问题。本文介绍了25千瓦，3阶段208 V AC-LING〜（TM）原型的实验结果，用于以不同的速度驱动感应电动机。该系统展示了1-2 v / US的DV / DT，总谐波变形为3％，没有昂贵的附加组件。
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