Three-Port High Step-Up and High Step-Down DC-DC Converter With Zero Input Current Ripple

In this article, a nonisolated three-port dc-dc converter with high voltage conversion ratio is proposed. the proposed converter, by changing place of input source between each three ports, different single-input two-output operation modes are achieved. The current ripple eliminated at low side for whole range duty cycles. ratios can be increased increasing turns second winding coupled inductors. Moreover, has achieved proper output regulations all simultaneously. utilized in renewable energy systems such as photovoltaic and fuel cells. stress on switches, average currents switches inductors, required condition cancelling calculated theoretically. theoretical results verified experimental 24 V 304 V, 240 voltages 400 W power extracted two modes.