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An Interleaved DC-DC Converter with High Voltage Gain and Efficiency for Photovoltaic Applications
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Mehdi Alizadeh1   , Majid Delshad *1 , Mohammad rouhollah Yazdani1 , Bahador Fani1 |
| 1- Isfahan (Khorasgan) Branch, Islamic Azad University |
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Abstract: (183 Views) |
This paper introduces an interleaved high step-up converter with a low component auxiliary circuit. The auxiliary circuit provides zero-voltage switching (ZVS) conditions for the main switches, while the auxiliary switch operates with zero-current switching (ZCS). Additionally, the auxiliary inductors are coupled with the main inductors, effectively transferring the auxiliary circuit's energy to the output. The auxiliary circuit is modular and can be expanded to accommodate additional branches. Due to the high voltage gain of the converter, the voltage stress on the main switches is low. Furthermore, the short on-time of the auxiliary switch results in a low circulating current in the auxiliary circuit, minimizing additional losses in the converter. Due to the absence of switching losses, capacitive turn-on losses, and reverse recovery issues in the diodes, as well as the low conduction losses of the switches resulting from reduced voltage stress, the converter achieves high efficiency. The proposed converter has been thoroughly analyzed, and to validate the theoretical analysis, a 240W prototype has been constructed and tested.
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| Keywords: High voltage gain, Interleaved converter, Auxiliary circuit, Soft switching |
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Full-Text [PDF 1182 kb]
(56 Downloads)
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Type of Study: Research |
Received: 2024/12/25 | Accepted: 2025/04/5 | Published: 2025/05/14
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| References |
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Alizadeh M, Delshad M, Yazdani M R, Fani B. An Interleaved DC-DC Converter with High Voltage Gain and Efficiency for Photovoltaic Applications. ieijqp 2025; 14 (1) :19-28 URL: http://ieijqp.ir/article-1-1021-en.html
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