Application of Vienna Converter to a double-driven SRMs under one PFC compensator

This study deals with a power factor correction (PFC) based Vienna converter for Switched Reluctance Motor (SRM) drive for medium power applications. Compared with the traditional two-level or three-level unidirectional rectifier, Vienna rectifier is the appropriate choice for its advantage such as only half numbers of the switches, simple structure, high-power efficiency and ability to realize unity power factor with proper control strategy. The PFC-based Vienna converter is designed to operate in continuous inductor current mode and feed two SRM drives from one power supply simultaneously. The proposed drive is designed to operate over a wide range of speed control with improved power quality at ac mains. The performance of the proposed drive is compared with Diode Bridge Rectifier (DBR) and it is validated with simulation results. Simulation of the proposed system for feeding SRM has been done in MATLAB software. The proposed topology provides almost lower input current THD, which is found to be about 0.25% and improved power factor up to 1.