Performance Analysis of Three-Phase Shunt Active Power Filter for Harmonic Mitigation
Samson Dauda Yusuf *
Department of Physic, Faculty of Natural and Applied Sciences, Nasarawa State University, Keffi, Nigeria.
Abdulmumini Zubairu Loko
Department of Physic, Faculty of Natural and Applied Sciences, Nasarawa State University, Keffi, Nigeria.
Jibrin Abdullahi
Department of Electrical/Electronic Engineering Technology, School of Engineering Technology, Isa Mustapha Agwai I Polytechnic Lafia, Nasarawa State, Nigeria.
*Author to whom correspondence should be addressed.
Abstract
Aims: To carried out performance analysis of a shunt active power filter (SAPF) for harmonics mitigation.
Study Design: Experimental design through simulation studies using P-Q Theory and proportional integral controller.
Place and Duration of Study: Department of Physics, Nasarawa State University Keffi, main campus, Nigeria, between October 2020 and September 2021.
Methodology: Primary and secondary data were obtained using AVO Digital Multimeter and manufacturers’ datasheets from Schneider electric website to capture required system parameters, SAPF was designed using a Voltage Source Inverter model to represent the Three-Phase source, and P-Q Theory with PI Control was used for reference current extraction. The SAPF was modeled, designed and simulated using MATLAB-Simulink and analyzed under different nonlinear load conditions and harmonic spectrum to achieve low Total Harmonic Distortion (THD).
Results: The THD in the unbalanced system voltages before the application of SAPF was found to be 12.6%, 11.4% and 11.2%, while after the application of SAPF was 2.2%, 2.5% and 2.5% for phase voltages a, b and c respectively. The grid currents indicated THD of 27.2%, 30.9% and 31% before application of SAPF and 2.2%, 2.2% and 2.1% after application.
Conclusion: The use of non-linear loads; has adverse effects on the quality of electric power as well as phase voltage and frequency waveforms. The use of SAPF is of vital importance in improving electric power quality for reliable power supply and quality service delivery.
Keywords: Active power filters, total harmonic distortion, proportional integral controller, MATLAB-Simulink, harmonic mitigation, nonlinear loads, P-Q theory
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References
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