Abstract To address the issues of low output voltage and poor stability in new energy power generation modules, exemplified by photovoltaic power generation, a high-gain Boost converter is proposed. Based on PID theory, a closed-loop controller for the converter is designed to enhance system robustness. The converter introduces a coupling inductor. The primary side of the coupling inductor replaces the input inductor in the traditional Boost converter, and the secondary side of the coupling inductor, together with a CD (capacitor and diode) unit, forms Boost Structure I. Simultaneously, a capacitor and diode form Boost Unit II, further utilizing the secondary winding of the coupling inductor to increase voltage gain while reducing component stress. A clamping branch is used to suppress voltage spikes on the switch and absorb leakage inductance energy. The operating modes of the converter are analyzed, and the converter parameters are theoretically calculated. A 200W/24V-380V experimental prototype was built. Through closed-loop system simulation and experimental verification, the robustness and feasibility of the proposed converter under closed-loop control were validated.
Fang et al. (Mon,) studied this question.