Study on the unbalanced current injection capability of grid-connected photovoltaic neutral-point-clamped inverter

Hossein Dehghani Tafti; Ali Iftekhar Maswood; Karthik Kandasamy; Ziyou Lim; Gabriel H.P. Ooi; Georgios Konstantinou; Josep Pou

doi:10.1109/ECCE.2016.7855475

Study on the unbalanced current injection capability of grid-connected photovoltaic neutral-point-clamped inverter

Hossein Dehghani Tafti, Ali Iftekhar Maswood, Karthik Kandasamy, Ziyou Lim, Gabriel H.P. Ooi, Georgios Konstantinou, Josep Pou

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

Due to high penetration of distributed generation units in power system, fault ride through (FRT) capability is one of the new requirements of the medium-scale grid-tied photovoltaic power plants (PVPPs). This paper proposes and investigates a control strategy for the neutral-point-clamped (NPC) inverter in order to inject proper unbalanced reactive currents to the grid during unbalanced grid faults. The proper unbalanced current injection reduces negative sequence of grid voltages and currents. The current references are scaled up/down individually, based on the grid phase rms voltages and inverter nominal current. The performance of the implemented control algorithm is investigated on a 150-kVA PVPP connected to 12.47-kV medium-voltage grid simulation model under various voltage sag conditions. Results from an experimental setup of grid-tied NPC inverter are presented in order to demonstrate the effectiveness of the proposed unbalanced current injection algorithm.

Original language	English
Title of host publication	ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781509007370
DOIs	https://doi.org/10.1109/ECCE.2016.7855475
Publication status	Published - 2016
Externally published	Yes
Event	2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 - Milwaukee, United States Duration: Sept 18 2016 → Sept 22 2016

Publication series

Name	ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings

Conference

Conference	2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016
Country/Territory	United States
City	Milwaukee
Period	9/18/16 → 9/22/16

Bibliographical note

Publisher Copyright:
© 2016 IEEE.

ASJC Scopus Subject Areas

Control and Systems Engineering
Electrical and Electronic Engineering
Energy Engineering and Power Technology
Control and Optimization

Keywords

Fault-ride-through capability
photovoltaic power plant
proportional resonant controller
three-dimensional space vector modulation
three-leg four-wire grid connected neutral-point-clamped inverter
unbalanced reactive current injection

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1109/ECCE.2016.7855475

Cite this

Dehghani Tafti, H., Maswood, A. I., Kandasamy, K., Lim, Z., Ooi, G. H. P., Konstantinou, G., & Pou, J. (2016). Study on the unbalanced current injection capability of grid-connected photovoltaic neutral-point-clamped inverter. In ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings Article 7855475 (ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2016.7855475

Dehghani Tafti, Hossein ; Maswood, Ali Iftekhar ; Kandasamy, Karthik et al. / Study on the unbalanced current injection capability of grid-connected photovoltaic neutral-point-clamped inverter. ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2016. (ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings).

@inproceedings{e9e068952b574f4aaaee2d6a4aeae4a6,

title = "Study on the unbalanced current injection capability of grid-connected photovoltaic neutral-point-clamped inverter",

abstract = "Due to high penetration of distributed generation units in power system, fault ride through (FRT) capability is one of the new requirements of the medium-scale grid-tied photovoltaic power plants (PVPPs). This paper proposes and investigates a control strategy for the neutral-point-clamped (NPC) inverter in order to inject proper unbalanced reactive currents to the grid during unbalanced grid faults. The proper unbalanced current injection reduces negative sequence of grid voltages and currents. The current references are scaled up/down individually, based on the grid phase rms voltages and inverter nominal current. The performance of the implemented control algorithm is investigated on a 150-kVA PVPP connected to 12.47-kV medium-voltage grid simulation model under various voltage sag conditions. Results from an experimental setup of grid-tied NPC inverter are presented in order to demonstrate the effectiveness of the proposed unbalanced current injection algorithm.",

keywords = "Fault-ride-through capability, photovoltaic power plant, proportional resonant controller, three-dimensional space vector modulation, three-leg four-wire grid connected neutral-point-clamped inverter, unbalanced reactive current injection",

author = "{Dehghani Tafti}, Hossein and Maswood, {Ali Iftekhar} and Karthik Kandasamy and Ziyou Lim and Ooi, {Gabriel H.P.} and Georgios Konstantinou and Josep Pou",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016 ; Conference date: 18-09-2016 Through 22-09-2016",

year = "2016",

doi = "10.1109/ECCE.2016.7855475",

language = "English",

series = "ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings",

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Dehghani Tafti, H, Maswood, AI, Kandasamy, K, Lim, Z, Ooi, GHP, Konstantinou, G & Pou, J 2016, Study on the unbalanced current injection capability of grid-connected photovoltaic neutral-point-clamped inverter. in ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings., 7855475, ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings, Institute of Electrical and Electronics Engineers Inc., 2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016, Milwaukee, United States, 9/18/16. https://doi.org/10.1109/ECCE.2016.7855475

Study on the unbalanced current injection capability of grid-connected photovoltaic neutral-point-clamped inverter. / Dehghani Tafti, Hossein; Maswood, Ali Iftekhar; Kandasamy, Karthik et al.
ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. Institute of Electrical and Electronics Engineers Inc., 2016. 7855475 (ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Dehghani Tafti, Hossein

AU - Maswood, Ali Iftekhar

AU - Kandasamy, Karthik

AU - Lim, Ziyou

AU - Ooi, Gabriel H.P.

AU - Konstantinou, Georgios

AU - Pou, Josep

PY - 2016

Y1 - 2016

N2 - Due to high penetration of distributed generation units in power system, fault ride through (FRT) capability is one of the new requirements of the medium-scale grid-tied photovoltaic power plants (PVPPs). This paper proposes and investigates a control strategy for the neutral-point-clamped (NPC) inverter in order to inject proper unbalanced reactive currents to the grid during unbalanced grid faults. The proper unbalanced current injection reduces negative sequence of grid voltages and currents. The current references are scaled up/down individually, based on the grid phase rms voltages and inverter nominal current. The performance of the implemented control algorithm is investigated on a 150-kVA PVPP connected to 12.47-kV medium-voltage grid simulation model under various voltage sag conditions. Results from an experimental setup of grid-tied NPC inverter are presented in order to demonstrate the effectiveness of the proposed unbalanced current injection algorithm.

AB - Due to high penetration of distributed generation units in power system, fault ride through (FRT) capability is one of the new requirements of the medium-scale grid-tied photovoltaic power plants (PVPPs). This paper proposes and investigates a control strategy for the neutral-point-clamped (NPC) inverter in order to inject proper unbalanced reactive currents to the grid during unbalanced grid faults. The proper unbalanced current injection reduces negative sequence of grid voltages and currents. The current references are scaled up/down individually, based on the grid phase rms voltages and inverter nominal current. The performance of the implemented control algorithm is investigated on a 150-kVA PVPP connected to 12.47-kV medium-voltage grid simulation model under various voltage sag conditions. Results from an experimental setup of grid-tied NPC inverter are presented in order to demonstrate the effectiveness of the proposed unbalanced current injection algorithm.

KW - Fault-ride-through capability

KW - photovoltaic power plant

KW - proportional resonant controller

KW - three-dimensional space vector modulation

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M3 - Conference contribution

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T3 - ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings

BT - ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2016 IEEE Energy Conversion Congress and Exposition, ECCE 2016

Y2 - 18 September 2016 through 22 September 2016

ER -

Dehghani Tafti H, Maswood AI, Kandasamy K, Lim Z, Ooi GHP, Konstantinou G et al. Study on the unbalanced current injection capability of grid-connected photovoltaic neutral-point-clamped inverter. In ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. Institute of Electrical and Electronics Engineers Inc. 2016. 7855475. (ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings). doi: 10.1109/ECCE.2016.7855475

Study on the unbalanced current injection capability of grid-connected photovoltaic neutral-point-clamped inverter

Abstract

Publication series

Conference

Bibliographical note

ASJC Scopus Subject Areas

Keywords

UN SDGs

Access to Document

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Cite this