Abstract
We have proposed to utilize multilevel converter configuration to reduce higher harmonics and switching loss by keeping the switching frequency at the fundamental frequency. However, voltage control of do side capacitor is difficult for multilevel converter, therefore we have proposed double converter configuration to solve the problem. We have investigated five level converter as an example of multilevel converters, and show its validity. In this paper we discuss the method of reactive power control comparing two methods, phase angle control and pulse width control.
