Adaptive Harmonic Suppression in Distributed Generation Using Instantaneous Power (p–q) Theory

Author(s): MV Subramanyam, N Ramyasri, G Divyasindhu, N Puneeth and V Rajesh

Abstract:

The rapid integration of renewable energy sources, such as solar photovoltaic and wind energy, into distributed generation systems has significantly improved sustainability but has also introduced major power-quality challenges. One of the most critical issues is harmonic distortion, which arises primarily from the use of power electronic converters and nonlinear loads. These harmonics distort current and voltage wave forms, leading to increased losses, overheating, and malfunction of sensitive equipment. This paper proposes an effective harmonic mitigation technique based on Instantaneous Reactive Power (PQ) Theory. A hybrid renewable energy system is modelled using MATLAB/Simulink, and harmonic levels are analysed using Fast Fourier Transform (FFT). A Shunt Active Power Filter is implemented to compensate for harmonic components. Simulation results demonstrate a significant reduction in Total Harmonic Distortion (THD) from 5.78% to 1.2%, ensuring compliance with IEEE standards. The proposed approach enhances overall power quality and ensures stable and efficient operation of distributed generation systems.

keywords:
Harmonic Distortion, Power Quality, Distributed Generation, Renewable Energy Systems, Solar Photovoltaic, MATLAB Simulink

Pages: 23-27     |    2 View     |    3 Download