A high step-up half-bridge DC/DC converter with a special coupled inductor for input current ripple cancelation and extended voltage doubler circuit for power conditioning of fuel cell systems

What is it about?

A large number of high step-up dc-dc converters have been researched due to their increasing demands in applications such as electric vehicles, uninterruptible power supplies, fuel cells, and photovoltaic systems.

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Why is it important?

An improved zero-voltage-switching (ZVS) dc-dc converter with a high voltage gain and a ripple-free input current is proposed. It consists of two converter cells—a boost cell and an asymmetrical pulse-width-modulation (APWM) full-bridge cell.