Control of UPQC Based on Steady State Linear Kalman Filter for Compensation of Power Quality Problems*

doi:10.23919/CJEE.2020.000011

Chinese Journal of Electrical Engineering ›› 2020, Vol. 6 ›› Issue (2): 52-65.doi: 10.23919/CJEE.2020.000011

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Control of UPQC Based on Steady State Linear Kalman Filter for Compensation of Power Quality Problems^*

Sayed Javed Alam, Sabha Raj Arya^*

Department of Electrical Engineering, Sardar Vallabhai National Institute of Technology, Suart 395007, India

Received:2019-10-13 Revised:2020-02-09 Accepted:2020-05-11 Online:2020-06-25 Published:2020-07-13
Contact: * Email: sabharaj79@gmail.com
About author:Sayed Javed Alam received the bachelor of technology in electrical engineering from Rajasthan Institute of Engineering & Technology Jaipur, India, in 2012 and M.Tech degree in electrical engineering with specialization in power electronics and electrical drives from Birla Institute of Technology, Mesra, India in 2015. In February 2016, he joined the department of electrical engineering, Global Institute of Technology, Jaipur, India, as an assistant professor. From July 2017 onwards, he is currently pursuing the Ph.D. degree in electrical engineering from Sardar Vallabhbhai National Institute of Technology Surat, India. His research area includes power electronics, power quality and design of custom power devices, multilevel inverter and DC-DC converters.
Sabha Raj Arya (M'12, SM'15) received bachelor of engineering degree in electrical engineering from Government Engineering College Jabalpur, in 2002, master of technology in power electronics from Motilal National Institute of Technology, Allahabad, in 2004 and Ph.D. degree in electrical engineering from Indian Institute of Technology (I.I.T) Delhi, New Delhi, India, in 2014. He is joined as assistant professor, Department of Electrical Engineering, Sardar Vallabhbhai National Institute of Technology, Surat. January 2019, he is promoted as associate professor in same institute. His fields of interest include power electronics, power quality, design of power filters and distributed power generation.He received two national awards namely INAE Young Engineer Award from Indian National Academy of Engineering, POSOCO Power System Award from Power Grid Corporation of India in the year of 2014 for his research work. He is also received Amit Garg Memorial Research Award-2014 from I.I.T Delhi from the high impact publication in a quality journal during the session 2013-2014. At present, he has published more than hundred research papers in internal national Journals and conferences in field of electrical power quality. He also serves as an associate editor for the IET (U.K.) Renewable Power Generation.
Supported by:
* Supported by the Science and Engineering Research Board-New Delhi Project-Extra Mural Research Funding Scheme(SB/S3/EECE/030/2016).

Abstract

Abstract: A frequency lock loop (FLL) based steady state linear Kalman filter (SSLKF) for unified power quality conditioner (UPQC) control in three-phase systems is introduced. The SSLKF provides a highly accurate and fast estimation of grid frequency and the fundamental components (FCs) of the input signals. The Kalman filter is designed using an optimized filtering technique and intrinsic adaptive bandwidth architecture, and is easily integrated into a multiple model system. Therefore, the Kalman state estimator is fast and simple. The fundamental positive sequence components (FPSCs) of the grid voltages in a UPQC system are estimated via these SSLKF-FLL based filters. The estimation of reference signals for a UPQC controller is based on these FPSCs. Therefore, both active filters of a UPQC can perform one and more functions towards improving power quality in a distribution network. In addition to the SSLKF-FLL based algorithm, a bat optimization algorithm (based on the echolocation phenomenon of bats) is implemented to estimate the value of the proportional integral (PI) controller gains. The bat algorithm has a tendency to automatically zoom into a region where a promising alternative solution occurs, preventing the solution from becoming trapped in a local minima. The complete three-phase UPQC is simulated in the Matlab/Simulink platform and the hardware is tested under various power quality problems.

Key words: Damping factor, echo-location, FPSC, harmonics, ITSE, SSLKF-FLL, power quality

Sayed Javed Alam, Sabha Raj Arya. Control of UPQC Based on Steady State Linear Kalman Filter for Compensation of Power Quality Problems^*[J]. Chinese Journal of Electrical Engineering, 2020, 6(2): 52-65.

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Control of UPQC Based on Steady State Linear Kalman Filter for Compensation of Power Quality Problems^*

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