Innovative Z-Source High Gain Step-up DC-DC Converter Integrated with Built-in Transformer

The increasing deployment of photovoltaic (PV) panels has raised the need for efficient voltage-boosting solutions to overcome low output voltages. Conventional DC-DC boost converters face high conduction losses and voltage stress on components. This paper proposes a new topology for a Z-source converter that integrates the switched inductor technique by using Built-in-Transformer. Various voltage-boosting methods have been explored. However, existing solutions suffer from limitations in voltage gain, voltage stresses, duty cycle range, and the number of components. The proposed topology combines the advantages of the Z-Source converter, switched capacitor technique, and switched inductor technique, to address these limitations. The paper presents the circuit configuration, operating modes, steady-state analysis, design considerations, efficiency analysis, small signal analysis, and simulation of the proposed converter. The new topology significantly improves active component count, device voltage stress, and voltage gain control, making it a promising solution for efficient voltage boosting in PV applications. Finally, to validate the performance of the proposed converter, a ۱۵۰W prototype is presented.

کلیدواژه ها:

DC-DC converters ، photovoltaic panels ، small signal analysis ، switched capacitor technique ، switched inductor technique ، Voltage multiplier cell ، Z-source converter