Continuous cross-period single phase shift control for dual active bridge converters

The dynamic load transient response of dual active bridge converters is mainly dependent on the switching frequency, leakage inductance and capacitor bank size. Traditional singe phase shift control mechanism can react slowly to a rapid load change, especially in applications where the switching frequency is low. Several control algorithms were published throughout the years, however, few of them are focusing on transient behavior. In this paper a novel control technique is presented which aims for dynamic performance. The mathematical basis of operation is presented and an appropriate control scheme is proposed, which is tested in a real application. The study reveled that the continuous cross-period single phase shift control technique has better load transient response than the traditional singe phase shift method. © 2021, European Association for the Development of Renewable Energy, Environment and Power Quality (EA4EPQ). All rights reserved.