A Single Switch Transformer-Less DC-DC Converter with Continuous Input Current for Photovoltaic Applications

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Toofan Sirous; Fathipour Babak; Babaei Ebrahim

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Journal Paper

Paper Information

Journal: International Journal of Industrial Electronics, Control and Optimization Year:2024 | Volume:7 | Issue:4 Page(s): 281-290

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Information Journal Paper

Title

A Single Switch Transformer-Less DC-DC Converter with Continuous Input Current for Photovoltaic Applications

Author(s)

Toofan Sirous | Fathipour Babak | Babaei Ebrahim | Issue Writer Certificate

Keywords

Non-Isolated DC-DC Converter

MPPT (maximum power point tracking)

Continuous Input Current

Coupled inductor

Turn Ratio Reduction

Abstract

In this paper, a single switch transformer-less DC-DC converter with Continuous Input Current for photovoltaic applications is proposed. The suggested configuration utilizes a CL1C2D2 structure to achieve a high voltage gain and alleviate voltage pressure on the semiconductor components. This design enables a significant increase in voltage output with a minimal turns ratio, leading to reduced size, weight, and cost of the converter system. The reduction in turns ratio of the Coupled inductor results in lowered voltage stress on the semiconductor elements. Additionally, employing just one power switch in the converter simplifies control and reduces expenses. With its Continuous Input Current, this converter is particularly well-suited for integration in photovoltaic systems. Simulation results conducted using PSCAD/EMTDC software validate the efficacy of the proposed power converter. Furthermore, the maximum power output of the photovoltaic module through an MPPT (Maximum Power Point Tracking) controller under varying irradiance levels is determined, and simulations are executed using PSCAD/EMTDC.

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