A Current Ripple Suppression Strategy of TAB for Photovoltaic Hydrogen Production

Excessive current ripple will affect the service life of electrolyzer in renewable energy hydrogen production system. The traditional three-phase active bridge phase shift strategy has only two external phase shift angles and lacks the excess control degrees of freedom to optimize the current ripple. To solve this problem, this article proposes a current ripple suppression strategy for triple active bridge (TAB) topology. This strategy sets an internal phase shift angle at the hydrogen production port, which increases the number of control degrees of freedom of the system. The optimal phase shift angle combination is obtained by calculation, which can effectively suppress the current ripple of the output current of the hydrogen production port.