Zero Sequence Voltage and Current Control in Four-Wire Grids-Fed by Grid-Forming Inverters

Zixian Zhu; Wei Chen; Vito Giuseppe Monopoli

doi:10.17775/CSEEJPES.2020.03230

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Zero Sequence Voltage and Current Control in Four-Wire Grids-Fed by Grid-Forming Inverters

Regular Papers | 更新时间：2026-10-15

- Zero Sequence Voltage and Current Control in Four-Wire Grids-Fed by Grid-Forming Inverters
- CSEE Journal of Power and Energy Systems Vol. 9, Issue 6, Pages: 2272-2279(2023)
- 作者机构：
  
  1. College of Electrical and Information Engineering, Hunan University,Changsha,China
  2. College of Electrical and Information Engineering, Lanzhou University of Technology,Lanzhou,China
  3. Department of Electrical and Information Engineering, Bari Polytechnic,Bari,Italy
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2020.03230
  CLC：
- Published：01 November 2023
- 稿件说明：
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Zixian Zhu, Wei Chen, Vito Giuseppe Monopoli. Zero Sequence Voltage and Current Control in Four-Wire Grids-Fed by Grid-Forming Inverters[J]. CSEE Journal of Power and Energy Systems, 2023, 9(6): 2272-2279.
DOI：

Zixian Zhu, Wei Chen, Vito Giuseppe Monopoli. Zero Sequence Voltage and Current Control in Four-Wire Grids-Fed by Grid-Forming Inverters[J]. CSEE Journal of Power and Energy Systems, 2023, 9(6): 2272-2279. DOI： 10.17775/CSEEJPES.2020.03230.

摘要

Abstract

Low voltage three-phase four-wire AC distribution grids may experience high neutral current

mainly caused by asymmetrical distribution of single-phase loads in three phases. High neutral current will not only increase line losses but also result in neutral potential variations. For the LV AC distribution grid established by a grid-forming inverter (e.g.

uninterruptible power supply and solid-state-transformer)

it also suffers from the same neutral current issues. Therefore

this paper comparatively studies several neutral current control approaches and their impacts on grid voltage balance

which is required by grid code. Then

this paper proposes an optimal neutral current control approach

which can obtain maximum neutral current suppression with less impact on grid voltage balance. The correctness of the theoretical analysis is validated through both simulation and experimental results.

关键词

Keywords

references

19. IEEE Guide for Self-Commutated Converters . [Online ] . Available: https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=29053.

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