A Three-level SVPWM Control Algorithm

The three-level Space Vector Pulse Width Modulation (SVPWM) principle is shown. A novel space vector modulation algorithm which use positive or negative small vectors as first active vector is presented. The judging rules of the small sectors and the out voltage vector sequence are presented as well as the producing of the signals for SVPWM. Also, the dwelling time of each out voltage is computed. The analysis of other sectors is realized by transforming the sectors. The validity of the proposed method is demonstrated by the simulation results.