Robust and Optimal Single-loop Voltage Controller for Grid-forming Voltage Source Inverters

Soham Chakraborty, Sourav Patel, Murti V. Salapaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Design and implementation of an optimal and robust single-loop voltage controller is proposed for single-phase grid-forming voltage source inverter (VSI). The objective of the proposed controller is to have good reference tracking and disturbance rejection. Uncertain nature of loads can significantly alter system's behavior, especially during heavily loaded conditions, and impose an uncertainty in the dynamic model. This deteriorates the robustness of the controller severely. -based controller design is proposed in this article to address this issue. The required objectives of the optimal controller are formulated after modeling the loads as uncertain element of the control system. Time-domain MATLAB/SIMULINK-based simulation study substantiates the fact that the resulting controller exhibits superior robustness in performance during varying loading conditions of VSI than that of the conventional multi-loop control architecture. OPAL-RT based controller hardware-in-the-loop (CHIL) simulations with low-cost controller are conducted to validate the computational footprint of the resulting controller.

Original languageEnglish (US)
Title of host publication2020 IEEE Power and Energy Conference at Illinois, PECI 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728152998
DOIs
StatePublished - Feb 2020
Event2020 IEEE Power and Energy Conference at Illinois, PECI 2020 - Champaign, United States
Duration: Feb 27 2020Feb 28 2020

Publication series

Name2020 IEEE Power and Energy Conference at Illinois, PECI 2020

Conference

Conference2020 IEEE Power and Energy Conference at Illinois, PECI 2020
CountryUnited States
CityChampaign
Period2/27/202/28/20

Bibliographical note

Funding Information:
The authors acknowledge Advanced Research Projects Agency-Energy (ARPA-E) for supporting this research through the project titled “Rapidly Viable Sustained Grid” via grant no. DE-AR0001016.

Publisher Copyright:
© 2020 IEEE.

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • multiplicative uncertainty
  • robust control
  • voltage controller
  • voltage source inverter
  • ∞ loop shaping

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