A Novel Single-Switch High-Gain DC–DC Converter With Active Switched Inductor
M. Diwakar Naik, U. Vinatha
Abstract
This paper presents a non-isolated, novel single-switch high-gain DC-DC converter with an active switched inductor (NSSHG-ASI) designed for fuel-cell and photovoltaic (PV) powered systems. It features a quadratic boost converter structure at the front end, followed by an active switched inductor that aids in boosting the voltage levels. The paper covers the steady-state analysis and dynamic modeling of the proposed converter. Furthermore, an effective control strategy has been developed, leveraging the K-factor method, to operate the converter in voltage control mode. This ensures stability, even in the event of significant variations in input voltage. To validate the efficacy of the proposed converter and controller, a practical 110W prototype was meticulously constructed and rigorously tested within a controlled laboratory environment.