Deadbeat Control with Parameter Identification under Single Phase-Shift Modulation for Dual Active Bridge Converters

This paper proposes a deadbeat control with parameter identification under single phase-shift modulation which aims to improve the output voltage regulation of dual active bridge converters. The least-squares analysis method is used to identify the actual values of parameters consisting of inductor and capacitor. In practice, the inductor and capacitor can vary due to tolerance and operation conditions, which cause regulation degradation. The proposed deadbeat parameter identification control is adopted to provide the predicted phase-shift angle accurately. When compared with the deadbeat control without parameter identification and conventional proportional-integral control under single phase-shift modulation, the steady-state performance and transient dynamic response of the output voltage of the proposed method are significantly improved. Simulation and experimental prototype setup are implemented to validate the advantages of the proposed method.