A Strategy of High Voltage Gain Switched - Capacitor DC-DC Converter with Reduced Component Rating and Count Fed DC Drive system

This paper presents a strategy of bidirectional switched-capacitor dc-dc converter with high voltage gain for industrial applications. In contrast to the conventional flying capacitor dc-dc converter and multilevel modular capacitor clamped dc-dc converter, the proposed converter is completely modular with low component power rating, small switching device count, low output capacitance requirement and simpler gate drive. Therefore, a small and light weight converter with high voltage gain and high efficiency can be achieved. This paper discusses the construction and operation of new converter along with the comparison of conventional converters. Finally, proposed converter is fed to dc motor to verify its performance characteristics. Simulation results are presented to validate the concept proposed. KeywordsDc–dc power conversion, switched-capacitor, efficiency, modular, voltage gain.

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