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

Articles in Press

Document Type : Research paper

Authors

1 Department of Electrical and Computer Engineering, Qom University of Technology, Qom, Iran.

2 Department of Electrical and Computer Engineering, Tarbiat Modares University, Tehran, Iran.

Abstract

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 150W prototype is presented.

Keywords

Main Subjects

References

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Journal of Operation and Automation in Power Engineering

Articles in Press, Corrected Proof
Available Online from 23 November 2024

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History

  • Receive Date: 03 September 2023
  • Revise Date: 05 March 2024
  • Accept Date: 18 June 2024
  • First Publish Date: 23 November 2024

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