Shunt hybrid active power filter under nonideal voltage based on fuzzy logic controller |
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Authors: | Papan Dey Saad Mekhilef |
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Affiliation: | 1. Power Electronics &2. Renewable Energy Research Laboratory (PEARL), Dept. of Electrical Engineering, University of Malaya, Kuala Lumpur, Malaysia |
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Abstract: | In this paper, a synchronous reference frame (SRF) method based on a modified phase lock loop (PLL) circuit is developed for a three-phase four-wire shunt hybrid active power filter (APF). Its performance is analysed under unbalanced grid conditions. The dominant lower order harmonics as well as reactive power can be compensated by the passive elements, whereas the active part mitigates the remaining distortions and improves the power quality. As different control methods show contradictory performance, fuzzy logic controller is considered here for DC-link voltage regulation of the inverter. Extensive simulations of the proposed technique are carried out in a MATLAB-SIMULINK environment. A laboratory prototype has been built on dSPACE1104 platform to verify the feasibility of the suggested SHAPF controller. The simulation and experimental results validate the effectiveness of the proposed technique. |
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Keywords: | Phase lock loop fuzzy logic controller harmonic compensation synchronous reference frame (SRF) method total harmonic distortion (THD) |
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