Abstract
Abstract For the generation of proton exchange membrane fuel cells, the problem of low frequency current ripple, battery efficiency and lifetime is reduced. This paper presents an efficient fuel cell power converter that suppresses low frequency current ripple. The front-end DC/DC boost circuit uses an active clamp push-pull circuit to reduce low-frequency current ripple; the downstream DC/AC inverter circuit uses a half-bridge inverter circuit to implement the DC inverter. First, the generation mechanism of low-frequency current pulsation and its influence on proton exchange membrane fuel cells are discussed. Secondly, the topology of high-efficiency power converter is analyzed in detail. Finally, a closed loop for suppressing low-frequency current ripple is proposed. Control method.
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