Active Power Filter Design for Mitigating Power Quality Issues in Renewable Grids Using Instantaneous Power Theory
Year: 2026
Type: article
Abstract: Dynamically growing amounts of renewable energy sources like solar and wind resources incorporated into the contemporary power systems have posed a serious problem in power quality majorly because of the existence of nonlinear loads and power electronic converters. These problems result in distortion of harmonics, low power factor, and lack of grid stability. The paper includes the design and deployment of a shunt active power philtre (SAPF) that utilises the instantaneous power theory (p–q theory) to address the presence of power quality issues in the renewable grid setting. In the suggested approach, Clarke transformation has been used to transform three-phase signals to the alpha-better reference frame, which allows precise determination of the instantaneous active and reactive power items. To obtain the harmonic components, a reference current generation scheme is constructed and these components are compensated with the help of a suitable current control strategy. The MATLAB/Simulink model and simulation of the system indicate how the system works under the different renewable and load conditions to ascertain its effectiveness. The findings indicate that overall harmonic distortion (THD) is significantly reduced, a level of great distortion has been converted to a level of harmonic distortion that is acceptable and acceptable as per IEEE standards. Also, the offered strategy is more effective in terms of the quality of current waveforms of sources and the increase in the overall stability of a system. The research validates that the SAPF-based on the p-q theory is an effective and certain solution to enhance power quality in those power systems which are renewable-integrated and which operate dynamically.
Author: M. Kavitha
Institution: Saveetha University
Language: English
Topic: Power Quality and Harmonics
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W7220337917