Multiphase resonant inverter with sine wave output voltage

Abstract

Methods to obtain the sinusoidal output voltage in DC-AC converters are considered. Large switching losses in power switches, high frequency interference, and the relatively high cost are the major disadvantages of DC-AC converters with pulse-width modulation. The circuit of a multiphase parallel resonant inverter with a pure sine wave output voltage is proposed. The operating principle of the two-phase inverter and the method of output voltage control are described. The results of resonant inverters OrCAD simulation are shown. The advantages of the proposed inverter circuit are shown in comparison with a single-phase circuit.