APF for Mitigation of Current Harmonics with p–q and Id–Iq Control Strategies using PI Controller
DOI:
https://doi.org/10.37591/.v1i1-2-3.3060Abstract
Due to a large amount of non-linear power electronic equipments, impact and fluctuating loads (such as that of
arc furnace, heavy merchant mill and electric locomotive, etc), problems of power quality have become more
and more serious with each passing day, as a result Active power filter (APF) gains much more attention due to
excellent harmonic compensation. But still the performance of the active filter seems to be in contradictions with
different control strategies. This paper presents detailed analysis to compare and elevate the performance of
two control strategies for extracting reference currents of shunt active filters under balanced, un-balanced and
non-sinusoidal conditions by using PI controller. The well known methods, instantaneous real active and
reactive power control strategy (p–q) and active and reactive current control strategy (id–iq) are two control
strategies which are extensively used in active filters. Extensive Simulations are carried out with PI controller
for both p–q and Id–Iq control strategies for different voltage conditions and adequate results were presented.
Simulation results validate the superior performance of active and reactive current control strategy (id – iq) with
PI controller over active and reactive power control strategy (p–q) with PI controller.
Keywords: Harmonic compensation, Shunt Active power filter, p–q control strategy, id–iq control strategy, PI
Controller
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