A Multilevel Switched Capacitor based High-Gain Non-Isolated Hybrid Switched Inductor Cascaded Boost DC-DC Converter

This paper proposes a Non-Isolated high gain Multilevel Hybrid Switched Inductor Cascaded Boost DC-DC converter (MHSICB). The MHSICB circuit comprises a hybrid switched inductor cell, a multistage switched capacitor cell, and a cascaded boost DC-DC converter, which collectively enhance the overall voltage gain of the converter. The proposed MHSICB demonstrates the capability to achieve an output voltage 14 times higher than the input voltage. The paper provides a comprehensive mathematical analysis for each MODE of operation, elucidating the voltage and current stress experienced by the various components. The MHSICB design incorporates several advantages, including high voltage gain, reduced voltage stress on the active switch, and a relatively lower count of diodes, enabling a higher conversion ratio. A comparative assessment is conducted with other previous topologies reported in the literature. To regulate the output voltage of the MHSICB, a double-loop PI controller is implemented, and its performance is evaluated under sudden disturbances at the load and source sides. The viability and effectiveness of the MHSICB are validated through MATLAB simulation results.