FUZZY LOGIC BASED SINGLE PHASE ACTIVE VOLTAGE QUALITY REGULATOR FOR VOLTAGE SAG COMPENSATION
Keywords:
Active Voltage Quality Regulator, Fuzzy Logic Controller, Total Harmonic DistortionAbstract
Voltage sag has always been a huge threat to sensitive industrial and commercial electrical consumer and deep sag with long duration are usually more intolerable. In this paper, a single phase active voltage quality regulator for mitigation of long duration deep sag is proposed. Control technique used for previous study was PI-controller. However, the dynamic response of PI-controller is low and harmonic distortion is high. To overcome this limitation, a fuzzy logic controller is used instead of PI-controller, which is based on rule base. A fuzzy logic toolbox in MATLAB/Simulink software is used to design fuzzy interface system with two inputs, one output and 25 rules. Simulation of AVQR with PI and Fuzzy logic controller is performed by MATLAB/Simulink software.
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