Flexible Power Regulation and Current-limited Control of Grid-connected Inverter under Unbalanced Grid Voltage Faults

Xiaoqiang Guo; Wenzhao Liu; Zhigang Lu

doi:10.1109/TIE.2017.2669018

Flexible Power Regulation and Current-limited Control of Grid-connected Inverter under Unbalanced Grid Voltage Faults

Xiaoqiang Guo, Wenzhao Liu, Zhigang Lu

Research output: Contribution to journal › Journal article › Research › peer-review

192 Citations (Scopus)

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Abstract

The grid-connected inverters may experience excessive current stress in case of unbalanced grid voltage Fault Ride Through (FRT), which significantly affects the reliability of the power supply system. In order to solve the problem, the inherent mechanisms of the excessive current phenomenon with the conventional FRT solutions are discussed. The quantitative analysis of three phase current peak values are conducted and a novel current-limited control strategy is proposed to achieve the flexible active and reactive power regulation and successful FRT in a safe current operation area with the aim of improving the system reliability under grid faults. Finally, the simulation and experiments of traditional and proposed FRT solutions are carried out. The results verify the effectiveness of the proposed method.

Original language	English
Journal	IEEE Transactions on Industrial Electronics
Volume	64
Issue number	9
Pages (from-to)	7425 - 7432
Number of pages	8
ISSN	0278-0046
DOIs	https://doi.org/10.1109/TIE.2017.2669018
Publication status	Published - Sept 2017

Keywords

Distributed Generation
Inverter
Fault ride through
Grid fault

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10.1109/TIE.2017.2669018

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title = "Flexible Power Regulation and Current-limited Control of Grid-connected Inverter under Unbalanced Grid Voltage Faults",

abstract = "The grid-connected inverters may experience excessive current stress in case of unbalanced grid voltage Fault Ride Through (FRT), which significantly affects the reliability of the power supply system. In order to solve the problem, the inherent mechanisms of the excessive current phenomenon with the conventional FRT solutions are discussed. The quantitative analysis of three phase current peak values are conducted and a novel current-limited control strategy is proposed to achieve the flexible active and reactive power regulation and successful FRT in a safe current operation area with the aim of improving the system reliability under grid faults. Finally, the simulation and experiments of traditional and proposed FRT solutions are carried out. The results verify the effectiveness of the proposed method.",

keywords = "Distributed Generation, Inverter, Fault ride through, Grid fault",

author = "Xiaoqiang Guo and Wenzhao Liu and Zhigang Lu",

year = "2017",

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doi = "10.1109/TIE.2017.2669018",

language = "English",

volume = "64",

pages = "7425 -- 7432",

journal = "IEEE Transactions on Industrial Electronics",

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TY - JOUR

T1 - Flexible Power Regulation and Current-limited Control of Grid-connected Inverter under Unbalanced Grid Voltage Faults

AU - Guo, Xiaoqiang

AU - Liu, Wenzhao

AU - Lu, Zhigang

PY - 2017/9

Y1 - 2017/9

N2 - The grid-connected inverters may experience excessive current stress in case of unbalanced grid voltage Fault Ride Through (FRT), which significantly affects the reliability of the power supply system. In order to solve the problem, the inherent mechanisms of the excessive current phenomenon with the conventional FRT solutions are discussed. The quantitative analysis of three phase current peak values are conducted and a novel current-limited control strategy is proposed to achieve the flexible active and reactive power regulation and successful FRT in a safe current operation area with the aim of improving the system reliability under grid faults. Finally, the simulation and experiments of traditional and proposed FRT solutions are carried out. The results verify the effectiveness of the proposed method.

AB - The grid-connected inverters may experience excessive current stress in case of unbalanced grid voltage Fault Ride Through (FRT), which significantly affects the reliability of the power supply system. In order to solve the problem, the inherent mechanisms of the excessive current phenomenon with the conventional FRT solutions are discussed. The quantitative analysis of three phase current peak values are conducted and a novel current-limited control strategy is proposed to achieve the flexible active and reactive power regulation and successful FRT in a safe current operation area with the aim of improving the system reliability under grid faults. Finally, the simulation and experiments of traditional and proposed FRT solutions are carried out. The results verify the effectiveness of the proposed method.

KW - Distributed Generation

KW - Inverter

KW - Fault ride through

KW - Grid fault

UR - http://ieeexplore.ieee.org.zorac.aub.aau.dk/document/7855800/

U2 - 10.1109/TIE.2017.2669018

DO - 10.1109/TIE.2017.2669018

M3 - Journal article

SN - 0278-0046

VL - 64

SP - 7425

EP - 7432

JO - IEEE Transactions on Industrial Electronics

JF - IEEE Transactions on Industrial Electronics

IS - 9

ER -

Flexible Power Regulation and Current-limited Control of Grid-connected Inverter under Unbalanced Grid Voltage Faults

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Keywords

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