Modified Single Phase Shift Control of DAB Converter for Fast Dynamic Response Under Various Disturbances

Dual Active Bridge converter is used widely in various applications due to its fast dynamic response. This paper proposes a control strategy that can suppress the load current disturbance and input voltage fluctuation simultaneously to enhance the output voltage recovery performance. A Model-based single-phase shift control is used here. The load current and input voltage is used as feed forward signal in the control loop to accomplish fast dynamic response. Detailed mathematical modeling and design of the proposed controller have been discussed. A brief study on controller performance is addressed under various operating conditions. Moreover, the performance of the proposed controller has been compared with the conventional controller in order to justify theoretical analysis. Typical experimental results are presented to verify the proposed method.