Title: A new soft switching PV module-integrated boost DC-DC converter

Authors: Khairy Sayed; Ahmed G. Abo-khalil

Addresses: Faculty of Engineering, Sohag University, Sohag, Egypt ' Majmaah University, Almajmaah, Saudi Arabia; Faculty of Engineering, Assiut University, Assiut, Egypt

Abstract: This paper introduces a new non-isolated soft switching boost PWM DC-DC converter utilising a switched capacitor edge-resonant cell. The proposed converters can readily fulfil a higher voltage gain due to coupled-inductor which render as a transformer to magnify the voltage gain. At the same time, the boost inductor serves as a resonant inductor. The studied soft switching circuit can achieve a zero-current soft-switching (ZCS) at turning-on and zero-voltage soft-switching (ZVS) at turning-off operations in the used active semiconductor switches. Those beneficial features enable a wider soft-switching range of operation with a higher step-up voltage ratio due to the auxiliary edge-resonance cell, which results in a higher efficiency and low losses. In order to demonstrate the effectiveness of the novel type boost converter, a small laboratory prototype is implemented by simulation and experimental setup using a standard 250-W, 72-cell PV module. Then, the operation performance of the implemented soft switching power converter is examined followed by the design guidelines of the proposed power converter and the results analysis.

Keywords: DC-DC converter; soft switching; zero-current-switching; ZCS; switched capacitor; edge resonant; module-integrated converter.

DOI: 10.1504/IJPELEC.2020.110751

International Journal of Power Electronics, 2020 Vol.12 No.4, pp.445 - 460

Received: 22 Oct 2017
Accepted: 06 Jun 2018
Published online: 29 Oct 2020 *

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