Abstract
This paper presents a novel soft-switching boost DC-DC converter, which uses an edge-resonant switch capacitor based on the pulse width modulation PWM technique. These converters have high gain voltage due to coupled inductors, which work as a transformer, while the boost converter works as a resonant inductor. Upon turning on, the studied soft switching circuit works at zero-current soft switching (ZCS), and upon turning off, it works at zero-voltage soft switching (ZVS) while using active semiconductor switches. High efficiency and low losses are obtained while using soft switching and auxiliary edge resonance to get a high step-up voltage ratio. A prototype model is implemented in the Power Electronics Laboratory, Assiut University, Egypt. Seventy-two-panel PV modules of 250 W each were used to simulate and execute the setup to examine the proposed boost converter.
Highlights
Vigorous attempts have been made to attain optimized switch-mode power converter circuits with which to interface renewable energy sources to a utility such as a solar photovoltaicPV, fuel cell, and supercapacitor banks
To increase the dependence of the power electronics system and the power conversion capability, the expansion of boost DC-DC circuits is needed with modern control schemes [1,2,3,4,5]
The conventional fly-back DC-DC converter topologies have leakage constituents that lead to voltage stresses on the semiconductor switches and more power losses, resulting in lower circuit efficiency
Summary
Vigorous attempts have been made to attain optimized switch-mode power converter circuits with which to interface renewable energy sources to a utility such as a solar photovoltaic. The used auxiliary switch in the chopper-fed DC-DC circuit, shown, can operate under the ZCS operation condition at turn-off transition by adding a simple resonance capacitor Cr. Recent research has been based on the combination of a PV module with a power converter, which addresses all the required control requirements, such as the tracking of maximum and output voltage regulation. Zero-voltage soft-switching boost converter with auxiliary edge-resonance snubbersin proposed [15]. The introduced is system studied in continuous and discontinuous consists of a solar array and a soft-switching boost converter, which uses an auxiliary modes of conduction. (1) Higher step-up voltage gain can be obtained due to the occurrence of edge resonance formed by (2) Power losses are reduced due to soft-switching operation; this improves efficiency.
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