Performance Analysis of ANN Based three-phase four-wire Shunt Active Power Filter for Harmonic Mitigation under Distorted Supply Voltage Conditions

Abstract

This paper presents the design and implementation of three-phase four-wire shunt active power filter (SAPF). It consists of insulated gate bipolar transistors, IGBT based current-controlled voltage source inverter (CC-VSI), series coupling inductor and self-supported DC bus. Power electronics based converters and non-linear loads generate waveform-driven power quality issue as harmonics. Three-phase four-wire SAPF mitigates harmonics, compensates for reactive power, neutral current and power factor correction. Conventionally, the positive sequence detection control strategy using phase-locked loop (PLL) is applied as the synchronizing unit vector element to generate reference source currents. Conventional controller tuning process is difficult and fails to perform satisfactorily under supply voltage variation conditions. In this paper, Levenberg-Marquardt back propagation training algorithm based artificial neural network (ANN) controller is proposed to regulate DC link voltage due to its self-adapting and rapid calculation characteristics that allow the controller to handle high nonlinearity and uncertainty in a non-linear system. Weights of a neuron are adapted to minimize total harmonic distortion (THD) of source current under the step, ramp, time series amplitude variation and frequency and amplitude of modulation conditions. The proposed system is modelled in MATLAB/SIMULINK environment and laboratory prototype with dSpace1104 control card is developed. Experimentation results validate the simulated results of the proposed scheme under supply voltage variations for three-phase four-wire distribution system.

KEYWORDS:

• Artificial neural network (ANN)
• Phase locked loop (PLL)
• Power quality
• Total harmonic distortion (THD)
• Shunt active power filter (SAPF)

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Notes on contributors

Seema Agrawal

Seema Agrawal was born in Kota, Rajasthan, India, in 1976. She received the BE and MTech degrees from Rajasthan Technical University, Kota, India, in 2000 and 2013, respectively. She received her PhD in 2018 from Rajasthan Technical University Kota. She is working as assistant professor in the Department of Electrical Engineering, Rajasthan Technical University, Kota, India from 2008. Her research interests include power electronics, drives, control, power quality issues, and active power filters. Corresponding Author. E-mail: [email protected]

D.K. Palwalia

D K Palwalia was born in Ajmer, Rajasthan, India, in 1976. He received the BE and ME degrees from Malviya National Institute of Technology, Jaipur, India, in 1996 and 1998, respectively. He was a lecturer with the Dept of Electrical Engineering, Govt Engineering College, Kota, India from 1998 to 2006. He worked as a research scholar with Department of Electrical Engineering, Indian Institute of Technology, Roorkee, India from 2006 to 2009 and subsequently obtained his PhD Degree. Presently, he is working as a Professor in Department of Electrical Engineering, Rajasthan Technical University, Kota, India. His research interests include power electronics, drives, digital design, induction generators, fuel cell, and active power filters. E-mail: [email protected]

Mahendra Kumar

Mahendra Kumar, a scholar at department of Electrical Engineering, IIT Roorkee, India. He has obtained MTech (Control and Instrumentation Engg) and BTech (Electronics & Communication Engg.) from Rajasthan Technical University, Kota in 2012 and 2010, respectively. He has worked as guest faculty in Electronics Engineering Department at RTU, Kota from 2014 to 2017. His research interests are power system stabilizer, multi-rate output feedback (fast output sampling feedback) techniques and model order reduction method, evolutionary optimization techniques, optimal control system, time interval (uncertain) system analysis, signal processing, image processing, load frequency control, phase locked loops.E-mail: [email protected]