Harmonic voltage control in distributed generation systems using optimal switching vector strategy

Srinivas, Vedantham Lakshmi and Singh, Bhim and Mishra, Sukumar and Xu, Lie (2022) Harmonic voltage control in distributed generation systems using optimal switching vector strategy. IEEE Systems Journal, 16 (2). 1861 - 1872. ISSN 1932-8184 (https://doi.org/10.1109/JSYST.2021.3070498)

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Abstract

With increased penetration of renewable power and the nonlinear loads in the distributed generation (DG) systems, increased power quality concerns are exhibited in the active distribution networks, especially the challenges associated with the current and voltage harmonics in the system. Various conventional harmonic compensation techniques are developed for voltage-controlled DG inverters in past, majority involve either multiple proportional-integral (PI) or proportional-resonant (PR) controllers in eliminating grid current harmonics. The current-controlled inverters, on the other hand, are not preferred in industrial applications, accounting to their wide variations in the switching frequency. A novel and adaptive harmonic voltage control is developed here, for voltage-controlled DG inverters, which neither uses any PI regulators nor imposes stability issues associated with nonideal implementation of infinite gains of PR controllers. Interestingly, the developed control logic can be used for DG inverters, both in grid-connected and off-grid operational modes. Furthermore, this strategy allows a network operator to use this as an additional supplement that can be enabled/disabled as per the network requirement. The control logic exploits the property of an optimal-switching-vector controller, i.e., accurate output voltage tracking. Simulations results demonstrate the effectiveness of the controller, to suppress grid current harmonics and load voltage harmonics in grid-interfaced (GI) and off-grid modes, respectively, ultimately satisfying the mandatory IEEE standard-1547. Experimental results verify the viability of the controller for practical applications.

ORCID iDs

Srinivas, Vedantham Lakshmi, Singh, Bhim, Mishra, Sukumar and Xu, Lie ORCID logoORCID: https://orcid.org/0000-0001-5633-7866;
  • Item type:Article
    ID code:75976
    Dates:
    Date
    Event
    June 2022
    Published
    26 April 2021
    Published Online
    16 March 2021
    Accepted
    Notes:© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:31 Mar 2021 13:00
    Last modified:11 Nov 2024 13:02
    URI:https://strathprints.strath.ac.uk/id/eprint/75976
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