2021 IEEE 4th International Electrical and Energy Conference (CIEEC) | 2021
Fuzzy Internal Model PI Control Design for Grid Power Supply
Abstract
In this paper, the structure and working mode of the new dual full bridge topology are analyzed, and the following work is carried out to improve the system performance. The dynamic small signal mathematical model of dual full bridge converter is established. Aiming at the main circuit structure of grid power supply system and the problem of complex parameter adjustment of traditional PID controller, a double closed-loop control method is proposed, in which PI controller is used in current inner loop and IMC controller is used in voltage outer loop, so as to reduce the number of adjustable parameters and the complexity of parameter adjustment The fuzzy internal model PI controller is used to give consideration to the dynamic performance and robust performance of the controller. The simulation results show the effectiveness of the designed controller.