Abstract
ABSTRACT This article proposes a fuzzy-based Unified Power Quality Conditioner (UPQC) with Wind Power Generation (WPG) and Battery Storage System (BSS). The UPQC contains a series and a shunt voltage source converters (VSC) coupled with a dc-bus. The hybrid controller adopts both the fuzzy and proportional integral (PI) controllers. The prime objectives of the present work are: (1) quick response and dc-link voltage levelling; (2) removal of supply voltage sag/swell; (3) reduction of harmonics and enhancement of power factor; (4) satisfactory performance for severe disruptions; and (5) adequate compensation for unbalanced systems. The performances of the suggested controller are examined for eight test scenarios involving various load configurations, and distorted grid voltages, and compared to those of the existing PI, sliding mode, and fuzzy logic controllers. It portrays that the proposed hybrid controller lowers the THD values to the best possible values and improves the power factor to almost unity for different loads with several power quality issues in addition to requiring very less time for reaching the steady dc-bus voltage.
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