A feedforward control method of dual-active-bridge DC/DC converter to achieve fast dynamic response

A dual-active-bridge (DAB) dc/dc converter may interconnect a battery and a dc grid to achieve UPS or peak shaving functions which bring potential benefits to the power distribution for telecom equipment. Such application requires the DAB converter having fast dynamic response. In this work, a feedforward algorithm is proposed to achieve peak-current-control strategy. The proposed approach can facilitate the converter to generate fast response to reference steps comparing with a traditional PI control method, and does not need the leakage inductance information of transformer comparing with other advanced methods. The simulation result is given to verify the effectiveness and feasibility.