| Abstract: |
Increasing use of non-linear loads, renewable energy sources, and the use of power electronics converters on today’s electric grids have placed greater demands on power quality. The main issues that affect the stability and efficiency of today’s electrical systems include harmonic distortion, reactive power imbalance, and distortion of current waveforms. To compensate for harmonic currents and improve power quality, Shunt Active Power Filters (SAPF) have been developed. This chapter outlines a comprehensive review of multivariable control strategies based on synchronous dq-reference frame transformations and instantaneous power theory used for SAPF harmonic mitigation. Special attention is given to nonlinear hysteresis-based current regulation methods for their rapid dynamic response capability and excellent accuracy in tracking harmonic currents. This chapter outlines the theoretical basis for SAPF harmonics mitigation, system models, control architectures, and comparisons of existing advanced control methodologies for SAPF’s. Additionally, the chapter reviews the application of intelligent and data-driven control methodologies for improving active filtering methods in smart and sustainable energy systems. The chapter describes how these modern control approaches help to improve grid reliability, reduce harmonic distortion, and support the integration of distributed energy resources in the next generation of smart grids. |
