Control mode and topology of hydrogen fuel cell DC/DC converter

Abstract

The decrease in hydrogen fuel cell durability is due to the excessive input current ripple of the DC/DC converter. An improved DC/DC converter is used to reduce the input current ripple in order to solve this problem. This DC/DC converter is modified on the basis of a staggered BOOST DC/DC converter, the input current ripple of the DC/DC converter is effectively reduced. In this paper, the principle of current ripple generation is analyzed, the operation mechanism of the DC/DC converter is analyzed, the corresponding control mode is selected. The DC/DC converter designed is simulated. The result is shown as below: the input current ripple coefficient of DC/DC Converter is controlled to less than 1%, the smoothness of the output current of hydrogen fuel combustion battery is guaranteed.