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All Journal Indonesian Journal of Electrical Engineering and Informatics (IJEEI)
Ahmed Alenany
Department of Computer and Systems Engineering, Zagazig University, Egypt
Computer Science & IT Electrical & Electronics Engineering

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Improved DC-Link Voltage Controller for Photo Voltaic ON-Grid Systems Husain A. Ismail; Ahmed Alenany; Belal Abozalam
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 9, No 2: June 2021
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v9i2.1724

Abstract

The DC-link voltage is an essential intermediate stage between the DC/DC and DC/AC converters in solar energy system. Due to the voltage fluctuations and current disturbances, a controller should be suitably designed to maintain the DC-link voltage well stabilized. In this paper, a variant of an adaptive DC-link voltage controller is proposed, namely PI-Fuzzy controller. The proposed controller has a fixed integral gain, while the proportional gain is determined based on a set of Fuzzy logic inference rules. Moreover, an anti-windup mechanism is added to the proposed controller to overcome integrator windup when the actuator saturates. Simulation results show that the proposed controller provides better rejection of current disturbances and fastest rise-time comparing to recently proposed PI-controllers for the DC-link voltage control.
Co-Authors Belal Abozalam Husain A. Ismail