Application of Repetitive-Fuzzy PID and DPLL Integrated Control to HF-Inverter Power Supply.

Abstract: A repetitive-Fuzzy PID and digital phase-locked loop (DPLL) integrating control strategy for High-Frequency(HF) inverter power supply is presented. The power modulation of HF-Inverter used repetitive-Fuzzy PID compound control,which can enhance the ability of the control system to withstand the parameter variations and nonlinear uncertain disturbances, and improve the dynamic characteristic of the control system; the DPLL was applied.to control the output frequency of HF-inverter,which reduce the losses of switching components and improve the efficiency of the power system. The experimental results show that the proposed control scheme can endow the HFinverter power supply with good steady state and dynamic performance and the power modulation control system can keep better precise control quality, high output power factor and verify the validity of the proposed integrated control strategy. [Copyright &y& Elsevier]