Switched Capacitor Based High-Gain DC-DC Converter for Low-Voltage Power Generation Application

Abstract

For low voltage power generation applications, this paper projects an inimitable high-gain DC-DC converter topology. The proposed topology employs a switched capacitor circuit, H-bridge inverter, boost circuit with anti-series switches and voltage doubler for obtaining the high voltage gain. The proposed topology uses nine switches, one switched capacitor, coupled inductor, voltage doubler circuit for producing high-gain in the output voltage. To achieve high-gain at the output, the proposed converter operates discontinuous conduction mode. For the 50 percent duty cycle of the boost switches, the proposed converter produces a gain of about 25 times. The proposed converter can give output for a wide range of input DC bus voltage. The operation of proposed high-gain DC-DC converter is verified using PSIM software. The paper describes the operation of the proposed high-gain DC-DC converter, including its modes of operation and simulation results.