Design of a Repetitive Control for a Three-Phase Grid-Tied Converter under Distorted Grid Voltage Conditions

Andrzej Straś (), Bartłomiej Ufnalski and Arkadiusz Kaszewski
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Andrzej Straś: Faculty of Electrical Engineering, Institute of Control and Industrial Electronics, Warsaw University of Technology, 00-662 Warsaw, Poland
Bartłomiej Ufnalski: Faculty of Electrical Engineering, Institute of Control and Industrial Electronics, Warsaw University of Technology, 00-662 Warsaw, Poland
Arkadiusz Kaszewski: Faculty of Electrical Engineering, Institute of Control and Industrial Electronics, Warsaw University of Technology, 00-662 Warsaw, Poland

Energies, 2023, vol. 16, issue 2, 1-17

Abstract: The paper presents a design of repetitive control (RC) in the current control system of a three-phase grid-tied converter. The goal of the control system is to provide sinusoidal input filter currents under the conditions of distorted and asymmetrical grid voltage. A novel design of the RC is presented, in which the repetitive part is not excited by sharp and non-periodic changes of the reference signal, but it enables high-quality performance under periodic disturbance conditions. In the proposed system. RC cooperates with a discrete state feedback controller. An innovative approach to tuning is proposed in which parameters of the repetitive, as well as the state feedback controller, are selected as a result of the optimization process with the use of a particle swarm algorithm. The proposed control system is verified experimentally on a laboratory test bench. The achieved results confirm the high-quality system performance.

Keywords: grid-tied converter; repetitive control; particle swarm optimization; current control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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