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The Voltage Control Strategy of a DC-Link Bus Integrated Photovoltaic Charging Module in a Unified Power Quality Conditioner

Author

Listed:
  • Fuyin Ni

    (School of Electrical and Information Engineering, Jiangsu University, Zhengjiang 212013, China
    School of Electrical and Information Engineering, Jiangsu University of Technology, Changzhou 213001, China)

  • Zhengming Li

    (School of Electrical and Information Engineering, Jiangsu University, Zhengjiang 212013, China)

  • Qi Wang

    (School of Electrical and Information Engineering, Jiangsu University of Technology, Changzhou 213001, China)

Abstract

In order to improve the functionality and efficiency of a unified power quality conditioner (UPQC), a DC-link bus integrated photovoltaic charging module is proposed in a UPQC. It can generate power for essential loads apart from providing energy to a DC-link bus. A conventional proportional integral (PI) controller fails to run smoothly in dynamic conditions of the micro-grid, since it has poor capabilities in determining suitable values of proportional gain and integral gain. So, the optimization algorithm for a PI controller based on chaos particle swarm optimization based on a multi-agent system (CPSO-MAS) algorithm was developed in this paper to overcome properties such as intermittent instability in the micro-grid. Through verification by simulation and experiment of UPQC harmonic compensation, it showed that the proposed DC link bus voltage control strategy can be effectively applied to UPQC towards various conditions related to voltage and current distortion. In addition, it proved that the proposed strategy has faster convergence than other algorithms, which enhances the stability of DC-link bus voltage. Hence, the contribution presented in this paper is to provide a novel approach for the power quality improvement of UPQC.

Suggested Citation

  • Fuyin Ni & Zhengming Li & Qi Wang, 2019. "The Voltage Control Strategy of a DC-Link Bus Integrated Photovoltaic Charging Module in a Unified Power Quality Conditioner," Energies, MDPI, vol. 12(10), pages 1-20, May.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:10:p:1842-:d:231352
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    Cited by:

    1. Buddhadeva Sahoo & Mohammed M. Alhaider & Pravat Kumar Rout, 2022. "Effective Harmonic Cancellation Technique for a Three-Phase Four-Wire System," Energies, MDPI, vol. 15(20), pages 1-26, October.

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