Model-Predictive-Control for Dual-Active-Bridge Converter based on Triple-Phase-Shift Control

Abstract:
Dc-Dc converter can realize the conversion of DC voltage sources and flexible energy conversion; it has the advantages of high efficiency and high-power density. Isolated DC-DC converter has the advantages of electrical isolation of primary and secondary sides, reducing electromagnetic interference and increasing voltage regulation range, which has been widely concerned. The common control strategies of dual active bridge DC-DC converter are phase shift control. The phase shift control using PI regulator is deficient in dynamic performance and cannot meet the requirements of the system. Therefore, this paper adopts model predictive control strategy to optimize the dynamic performance of traditional control strategy. Compared with traditional PI control, it is proved that the proposed method has good dynamic performance in DAB converter and can meet the steady-state performance requirements.