Implementation of a Highly Boosted Converter with High Efficiency Integral Sliding Mode Control for Photovoltaic Applications
Subject Areas : Power Engineering
Ali Mohamed Ghadoori
1
,
Majid Moazzami
2
1 - Department of Engineering, North Refineries Company (N.R.C), Baghdad, Iraq
2 - Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
Keywords: High boost converter, Soft switching, Sliding mode control, Low current ripple.,
Abstract :
Non-isolated step-up converters have wide applications such as photovoltaics, fuel cells, hybrid vehicle, etc. In many applications, it is very important to stabilize the output voltage despite changes in load or input voltage, so a suitable control circuit for the converter should be designed so that its dynamic response to load changes is fast. To reduce losses and increase efficiency, soft switching techniques are also provided. In this paper, a new high boost converter with an innovative sliding mode control circuit is presented. The converter has high voltage gain, low stress and zero current switching. Also, the energy of the leakage inductor is well absorbed by the clamp capacitor and the voltage spike at both ends of the switch is not observed. All diodes are switched at zero current, so they don't have reverse recovery problem. The converter has been fully analyzed and a 130 W sample has been simulated and built to confirm the circuit analysis.
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