Zero-Sequence Current Controller for a Four-Leg PV Inverter Under Unbalanced Grid Faults

Mohammad Reza Miveh*, Navid Bayati, Ali Asghar Ghadimi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

During grid fault conditions, a photovoltaic (PV) power plant must stay connected to the power system, and injects reactive power to support the grid voltage. In this condition, the compensation of active/reactive power oscillations is extremely important to achieve a higher reliability and stability in the power system. This study proposes an enhanced zero-sequence current control approach for a PV inverter under unbalanced grid faults. The controller is implemented using the combination of proportional-integral (PI) and proportional resonant (PR) regulators using symmetrical components. Despite of the conventional methods, which compensate for either active or reactive power using the positive and negative sequence currents, the proposed scheme has the ability to cancel the oscillation of both the active and reactive powers at the same time with a fast dynamic response.

Original languageEnglish
Title of host publication2022 IEEE International Conference on Environment and Electrical Engineering and 2022 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2022
Number of pages4
PublisherIEEE
Publication date2022
ISBN (Electronic)9781665485371
DOIs
Publication statusPublished - 2022
Event2022 IEEE International Conference on Environment and Electrical Engineering and 2022 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2022 - Prague, Czech Republic
Duration: 28. Jun 20221. Jul 2022

Conference

Conference2022 IEEE International Conference on Environment and Electrical Engineering and 2022 IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2022
Country/TerritoryCzech Republic
CityPrague
Period28/06/202201/07/2022

Bibliographical note

Publisher Copyright:
© 2022 IEEE.

Keywords

  • control
  • four-leg
  • grid faults
  • inverter
  • Zero-sequence

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