A Review on Current Reference Calculation of Three-Phase Grid-Connected PV Converters under Grid Faults

Ehsan Afshari; Gholam Reza Moradi; Yongheng Yang; Babak Farhangi; Shahrokh Farhangi

doi:10.1109/PECI.2017.7935761

A Review on Current Reference Calculation of Three-Phase Grid-Connected PV Converters under Grid Faults

Ehsan Afshari, Gholam Reza Moradi, Yongheng Yang, Babak Farhangi, Shahrokh Farhangi

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

24 Citations (Scopus)

Abstract

Unbalanced grid voltage dips may lead to unbalanced non-sinusoidal current injections, dc-link voltage oscillations, and active and/or reactive power oscillations with twice the grid fundamental frequency in three-phase grid-connected Photovoltaic (PV) systems. Double grid frequency oscillations at the dc-link of the conventional two-stage PV inverters can further deteriorate the dc-link capacitor, which is one of the most life-limiting components in the system. Proper controls of these converters may efficiently address this problem. In those solutions, Current Reference Calculation (CRC) is one of the most important issues that should be coped with for a reliable operation of grid-connected converters under unbalanced grid faults. Accordingly, this paper reviews the existing CRC methods and presents a current reference generation method, which can have 16 unique modes. Issues are also investigated in this paper that the two-stage three-phase converter faces in each mode. The performance of the CRC method is verified and compared to the prior-art methods by simulations under unbalanced voltage dips.

Original language	English
Title of host publication	Proceedings of the 2017 IEEE Power and Energy Conference at Illinois (PECI)
Number of pages	7
Publisher	IEEE Press
Publication date	Feb 2017
ISBN (Print)	978-1-5090-5550-0
DOIs	https://doi.org/10.1109/PECI.2017.7935761
Publication status	Published - Feb 2017
Event	2017 IEEE Power and Energy Conference at Illinois (PECI) - Champaign, United States Duration: 23 Feb 2017 → 24 Feb 2017

Conference

Conference	2017 IEEE Power and Energy Conference at Illinois (PECI)
Country/Territory	United States
City	Champaign
Period	23/02/2017 → 24/02/2017

Keywords

Power oscillation
Current limitation
DC-link voltage oscillation
Low-Voltage Ride-Through (LVRT)
Photovoltaic (PV) systems
Two-stage PV inverter

Access to Document

10.1109/PECI.2017.7935761

AUB Link

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PV2GRID: A Next-Generation Grid Side Converter with Advanced Control and Power Quality Capabilities
Blaabjerg, F., Yang, Y. & Sangwongwanich, A.
Energinet SOV
01/01/2015 → 30/09/2017
Project: Research

Cite this

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title = "A Review on Current Reference Calculation of Three-Phase Grid-Connected PV Converters under Grid Faults",

abstract = "Unbalanced grid voltage dips may lead to unbalanced non-sinusoidal current injections, dc-link voltage oscillations, and active and/or reactive power oscillations with twice the grid fundamental frequency in three-phase grid-connected Photovoltaic (PV) systems. Double grid frequency oscillations at the dc-link of the conventional two-stage PV inverters can further deteriorate the dc-link capacitor, which is one of the most life-limiting components in the system. Proper controls of these converters may efficiently address this problem. In those solutions, Current Reference Calculation (CRC) is one of the most important issues that should be coped with for a reliable operation of grid-connected converters under unbalanced grid faults. Accordingly, this paper reviews the existing CRC methods and presents a current reference generation method, which can have 16 unique modes. Issues are also investigated in this paper that the two-stage three-phase converter faces in each mode. The performance of the CRC method is verified and compared to the prior-art methods by simulations under unbalanced voltage dips.",

keywords = "Power oscillation, Current limitation, DC-link voltage oscillation, Low-Voltage Ride-Through (LVRT), Photovoltaic (PV) systems, Two-stage PV inverter",

author = "Ehsan Afshari and Moradi, {Gholam Reza} and Yongheng Yang and Babak Farhangi and Shahrokh Farhangi",

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Afshari, E, Moradi, GR, Yang, Y, Farhangi, B & Farhangi, S 2017, A Review on Current Reference Calculation of Three-Phase Grid-Connected PV Converters under Grid Faults. in Proceedings of the 2017 IEEE Power and Energy Conference at Illinois (PECI). IEEE Press, 2017 IEEE Power and Energy Conference at Illinois (PECI), Champaign, Illinois, United States, 23/02/2017. https://doi.org/10.1109/PECI.2017.7935761

A Review on Current Reference Calculation of Three-Phase Grid-Connected PV Converters under Grid Faults. / Afshari, Ehsan; Moradi, Gholam Reza; Yang, Yongheng et al.
Proceedings of the 2017 IEEE Power and Energy Conference at Illinois (PECI). IEEE Press, 2017.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

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AU - Moradi, Gholam Reza

AU - Yang, Yongheng

AU - Farhangi, Babak

AU - Farhangi, Shahrokh

PY - 2017/2

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N2 - Unbalanced grid voltage dips may lead to unbalanced non-sinusoidal current injections, dc-link voltage oscillations, and active and/or reactive power oscillations with twice the grid fundamental frequency in three-phase grid-connected Photovoltaic (PV) systems. Double grid frequency oscillations at the dc-link of the conventional two-stage PV inverters can further deteriorate the dc-link capacitor, which is one of the most life-limiting components in the system. Proper controls of these converters may efficiently address this problem. In those solutions, Current Reference Calculation (CRC) is one of the most important issues that should be coped with for a reliable operation of grid-connected converters under unbalanced grid faults. Accordingly, this paper reviews the existing CRC methods and presents a current reference generation method, which can have 16 unique modes. Issues are also investigated in this paper that the two-stage three-phase converter faces in each mode. The performance of the CRC method is verified and compared to the prior-art methods by simulations under unbalanced voltage dips.

AB - Unbalanced grid voltage dips may lead to unbalanced non-sinusoidal current injections, dc-link voltage oscillations, and active and/or reactive power oscillations with twice the grid fundamental frequency in three-phase grid-connected Photovoltaic (PV) systems. Double grid frequency oscillations at the dc-link of the conventional two-stage PV inverters can further deteriorate the dc-link capacitor, which is one of the most life-limiting components in the system. Proper controls of these converters may efficiently address this problem. In those solutions, Current Reference Calculation (CRC) is one of the most important issues that should be coped with for a reliable operation of grid-connected converters under unbalanced grid faults. Accordingly, this paper reviews the existing CRC methods and presents a current reference generation method, which can have 16 unique modes. Issues are also investigated in this paper that the two-stage three-phase converter faces in each mode. The performance of the CRC method is verified and compared to the prior-art methods by simulations under unbalanced voltage dips.

KW - Power oscillation

KW - Current limitation

KW - DC-link voltage oscillation

KW - Low-Voltage Ride-Through (LVRT)

KW - Photovoltaic (PV) systems

KW - Two-stage PV inverter

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M3 - Article in proceeding

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BT - Proceedings of the 2017 IEEE Power and Energy Conference at Illinois (PECI)

PB - IEEE Press

T2 - 2017 IEEE Power and Energy Conference at Illinois (PECI)

Y2 - 23 February 2017 through 24 February 2017

ER -

A Review on Current Reference Calculation of Three-Phase Grid-Connected PV Converters under Grid Faults

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Keywords

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Projects

PV2GRID: A Next-Generation Grid Side Converter with Advanced Control and Power Quality Capabilities

Cite this