NDLI: Real-time control of shunt active power filter under distorted grid voltage and unbalanced load condition using self-tuning filter

Content Provider	IET Digital Library
Author	Biricik, Samet Redif, Soydan Özerdem, Özgür C. Khadem, Shafiuzzaman K. Basu, Malabika
Abstract	In this paper, an alternative control method is proposed to improve the harmonic suppression efficiency of the active power filter in a distorted and an unbalanced power system to compensate for the perturbations caused by the unbalanced non-linear loads. The proposed method uses a self-tuning filter (STF) to process the grid voltage in order to provide a uniform reference voltage to obtain the correct angular position of the phase locked loop. Moreover, the required compensation currents are obtained by implementing another STF in the transformed set of currents in order to separate the fundamental and the harmonic currents. This allows the calculation of a precise reference current for the unbalanced, the non-linear and the variable load conditions. The proposed control method gives an adequate compensating current reference even for a non-ideal voltage and unbalanced current conditions. The real-time control of the filter under the distorted and the unbalanced power system is developed in an RT-LAB real-time platform. The results obtained in the software-in-the-loop configuration are presented to verify the effectiveness of the proposed control technique.
Starting Page	1895
Ending Page	1905
Page Count	11
ISSN	17554535
Volume Number	7
e-ISSN	17554543
Issue Number	Issue 7, Jul (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/7/7
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2013.0924
Journal	IET Power Electronics
Publisher Date	2014-04-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Filter Adaptive Control Compensation Currents Control of Electric Power System Distorted Grid Voltage Harmonic Content Harmonic Suppression Efficiency Harmonics Nonideal Voltage Condition Other Power Apparatus And Electric Machine Phase Locked Loop Power Harmonic Filter Power Supply Quality Real Time Control RT-LAB Real-time Platform Self Adjusting Control System Self Adjusting System Self-tuning Filter Shunt Active Power Filter Software-in-the-loop Configuration Unbalanced Current Condition Unbalanced Load Condition Unbalanced Nonlinear Load Uniform Reference Voltage
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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