High Step-up Gain Interleaved DC-DC Converter with Switched Capacitor and Regenerative Boost Configuration for Traction Applications

摘要

PV based traction systems employ DC-DC convert- ers for boosting the PV output voltage to adequate levels. Modern traction applications requires high voltage levels (500V to 750V) and hence, conventional boost converters are inadequate. In order to establish an efficient traction system, a high step-up gain interleaved DC-DC converter is presented. A high step-up gain interleaved DC-DC converter is designed by combining the switched capacitor and regenerative boost (SCRB) configuration. Since the switched capacitor and regenerative boost operations take place simultaneously, the voltage gain and efficiency is improved. In addition, interleaving reduces ripple content, which helps to elongate the lifetime of traction motors. Moreover, it offers low switching stress across the semiconductor....