Fuzzy Based Current Harmonic Suppression and Reactive Power Compensation in a Grid Connected PV System Using Shunt Active Filter
Journal: International Journal of Science and Research (IJSR) (Vol.4, No. 5)Publication Date: 2015-05-05
Authors : N. Sreerami Reddy; SK. Hameed;
Page : 2102-2107
Keywords : Photovoltaic system; Maximum power point tracking; Boost converter; Fuzzy logic controller; Harmonic elimination and reactive power compensation;
Abstract
The photovoltaic (PV) system exhibits a nonlinear current-voltage (I-V) characteristic that its maximum power point (MPP) varies with solar insolation and temperature. In this paper, a maximum power point tracking (MPPT) method using fuzzy logic control (FLC) is presented. This method is based on the concept of perturbation and observation (P & O) algorithm to track the MPP. The two stage grid interactive PV system described in this paper, which supplies active power as well as provides reactive power compensation and helpful for the reduction of harmonics by using APF. Active power filter has gained more attention because of its excellent performance of harmonic mitigation and reactive power compensation. This paper presents detailed analysis about mitigation of harmonics using APF in shunt active mode. The well known control method, instantaneous real active and reactive power method (p-q) method has been utilized in this paper. Extensive Simulations are carried out with fuzzy controller for p-q method under balanced voltage condition and adequate results were presented. Simulation results validate the harmonics suppression capability of shunt active power filter under active and reactive power control strategy (p-q) with fuzzy controller.
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