Abstract
This study begins with a brief overview of the problem of harmonic distortion and its effect on the quality of electric power, how the active power filter mitigate this problems then investigate the effect of control circuit time delay on the performance of Active Power Filter (APF). Active filter is an electronic power system that absorbs harmonic currents in the network, generated by nonlinear loads. The nonlinear load seems the main source of harmonic distortion in the power system. A shunt active power filter with optimized PI discussed in this study. Delay times are inevitable in Digital Signal Processing (DSP) based controllers can significantly degrade the performance of active power filter. Active filter performance can be affected by the delay between the control and measurement of the output current of SAPF and load current harmonics. The proposed filter reduces harmonic distortion is within an acceptable range.
Highlights
Power electronics equipment connected to the voltage source, causes a lot of problems of power quality
The active power filter produces an output current available more preferred form that when they are injected into the AC line, it overrides the original load generated harmonics (Chaughule et al, 2013)
The aim of this study is to investigate the impact of time delay on the performance of harmonics elimination in Active Power Filter (APF)
Summary
Power electronics equipment connected to the voltage source, causes a lot of problems of power quality. It is their load of non-linear nature (Boukadoum et al, 2013), which is one of the causes of increased harmonics in grids. The use of Active Power Filter (APF) to reduce harmonics has attracted much attention (Srinivas and Tulasi Ram, 2013). The term active filter is a common one and is used to power a group of power electronic circuits including power switching device and passive components of the energy-storage circuit such as capacitors and inductors
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