PFC Based Integrated SEPIC-Flyback Dual Output Converter Fed SRM Drive

This paper presents an isolated PFC converter with two symmetrical output voltages feeding switched reluctance motor (SRM) drive. The proposed converter is an integration of SEPIC (single ended primary inductor) and flyback converter. The high frequency transformer of flyback converter, provides input-output isolation in the system. Both SEPIC and flyback converters are designed for discontinuous conduction mode (DCM) of operation to obtain power factor correction at input side. The speed control of proposed drive is achieved by regulating converter output DC voltage. The proposed converter provides improved power quality over wide input voltage range and loading conditions. Experimental results of a prototype of integrated SEPIC-flyback converter fed SRM drive is demonstrated here. The obtained power quality parameters comply with given regulation for harmonics, such as IEC 61000-3-2.