A MODIFIED CONTROL SCHEME TO MITIGATE HARMONICS, IMPROVE VOLTAGE REGULATION & POWER FACTOR USING SINGLE-PHASE SHUNT ACTIVE POWER FILTER
DOI:
https://doi.org/10.55766/sujst-2024-06-e03764Keywords:
Harmonics reduction, Power factor improvement, Power quality, Shunt Active Power FilterAbstract
This paper presents a modified control scheme to eliminate various power quality issues using a single-phase shunt active power filter (SAPF). The focus is primarily on harmonics mitigation, power factor (PF) correction, DC link voltage regulation, and reducing the settling time of the system. A nonlinear PID (NLPID) controller is employed to regulate the DC link voltage and reduce the system’s settling time. The overall system is modeled for a 1 kW load and tested under 85% load condition. The results, obtained using the MATLAB/Simulink platform, are found to be quite satisfactory. After compensation, the total harmonic distortion (THD) is reduced to below 8%, in compliance with the IEEE 519-2022 standard, and the PF is improved to nearly unity.
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