PERFORMANCE ASSESSMENT OF IMPROVED CURRENT CONTROL STRATEGY BASED SHUNT ACTIVE POWER FILTER: A REVIEW

Abstract

The most powerful solution to current harmonics is a shunt active power filter (SAPF). Because of its simple implementation features, the Synchronous Reference Frame (SRF) concept has been commonly used in current harmonics extraction algorithms in its controller. The traditional SRF algorithm, on the other hand, has a significant time delay due to its heavy dependency on slow numerical filters. Furthermore, the algorithm is still thought to have unnecessary features that place an undue computational burden on the controller. Active control filters are commonly used in the power system to reduce harmonics induced by nonlinear loads. The Shunt Active Power Filter (SAPF) injects a suitable compensating current at a line point known as the point of common coupling (PCC) to cancel out the line's harmonics and restore the sinusoidal existence of voltage and current waveforms. As an active filter, a three-phase current-controlled voltage source inverter (VSI) with a DC connection capacitor across it is used. Shunt active power filter (SAPF) is the best solution that minimises the harmonic problems in power systems, but how fast and how effective it is. This paper describes a detailed study about the various types of power quality disturbances and their mitigation techniques and their comparative details.

Key findings

• ▸The traditional SRF algorithm has a significant time delay due to its heavy dependency on slow numerical filters.
• ▸The improved current control strategy reduces harmonics and restores sinusoidal waveforms more effectively than the traditional SRF algorithm.
• ▸The shunt active power filter is the best solution for minimizing harmonic problems in power systems.

Keywords

Identifiers

DOI

10.30780/ijtrs.v06.i10.002

Journal

International Journal of Technical Research & Science

Year

2021