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Frequency Regulation in an AC Microgrid with Diverse Sources of Power Using Intelligent Control Technique

Vishal Saini and Sathans
Department of Electrical Engineering, National Institute of Technology, Kurukshetra, India

Abstract—In recent years worldwide, there is considerable focus on the growth of renewable energy sources (RESs) and distributed generation system (DGs) leading to the concept of microgrid (MG), which is becoming increasingly very popular. The RESs, constituting a MG, by nature have intermittent power output. Therefore, due to unpredictable uncertainties in power output of these systems it becomes very difficult for the conventional controllers to give satisfactory performance over a wide range and under different operating conditions. This paper addresses the problem of frequency regulation in an AC microgrid under variable wind speed and multiple random load disturbances and proposes a fuzzy gain scheduled proportional-integral-derivative (FGSPID) controller to withstand these uncertainties and disturbances and provide an improved performance. For comparative analysis, the conventional PID controller is also implemented on the same microgrid system. Simulation results clearly indicate significant improvement in the frequency regulation of the microgrid system with FGSPID controller as compared to conventional PID controller.

Index Terms—frequency regulation, AC-microgrid, renewable energy sources, intelligent control

Cite: Vishal Saini and Sathans, "Frequency Regulation in an AC Microgrid with Diverse Sources of Power Using Intelligent Control Technique," Jounal of Automation and Control Engineering, Vol. 4, No. 3, pp. 252-256, June, 2016. doi: 10.18178/joace.4.3.252-256
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