Research on adaptive control of grid-connected PV inverters in weak grid

Guihua Liu; Xiaojiao Cao; Tong Shi; Wei Wang

doi:10.1109/ECCE.2015.7310257

Research on adaptive control of grid-connected PV inverters in weak grid

Guihua Liu
, Xiaojiao Cao
, Tong Shi
, Wei Wang

School of Electrical Engineering and Automation, Harbin Institute of Technology

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

8 Scopus citations

Abstract

In recent years, with the promotion and application of photovoltaic (PV) technology, research on grid-connected inverters incorporating with weak grid has become a hot field. In general, the large grid impedance will reduce the gain and bandwidth of the control system and slow down the dynamic response, or even lead to resonance and instability of the whole control system. Especially, when the grid impedance changes, the traditional PI controller with fixed parameters will lead to poor control performance. In this article, the control strategy of grid-connected PV inverter in weak grid was researched, so as to improve the adaptation of the whole control system to grid impedance. Firstly, a two harmonic injection method was used to detect the grid impedance, and then an adaptive control algorithm based on pole assignment principle was studied to adjust the current controller parameters. So the robustness of grid-connected PV inverter system is improved. At last, the simulation and experimental results verified its validity.

Original language	English
Title of host publication	2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	4229-4235
Number of pages	7
ISBN (Electronic)	9781467371506
DOIs	https://doi.org/10.1109/ECCE.2015.7310257
State	Published - 27 Oct 2015
Externally published	Yes
Event	7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015 - Montreal, Canada Duration: 20 Sep 2015 → 24 Sep 2015

Publication series

Name	2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015

Conference

Conference	7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015
Country/Territory	Canada
City	Montreal
Period	20/09/15 → 24/09/15

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Weak grid
adaptive control
grid impedance online detection
grid-connected PV inverter

Access to Document

10.1109/ECCE.2015.7310257

Cite this

Liu, G., Cao, X., Shi, T., & Wang, W. (2015). Research on adaptive control of grid-connected PV inverters in weak grid. In 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015 (pp. 4229-4235). Article 7310257 (2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2015.7310257

@inproceedings{e93936b11edc4f9da9a434692988afd2,

title = "Research on adaptive control of grid-connected PV inverters in weak grid",

abstract = "In recent years, with the promotion and application of photovoltaic (PV) technology, research on grid-connected inverters incorporating with weak grid has become a hot field. In general, the large grid impedance will reduce the gain and bandwidth of the control system and slow down the dynamic response, or even lead to resonance and instability of the whole control system. Especially, when the grid impedance changes, the traditional PI controller with fixed parameters will lead to poor control performance. In this article, the control strategy of grid-connected PV inverter in weak grid was researched, so as to improve the adaptation of the whole control system to grid impedance. Firstly, a two harmonic injection method was used to detect the grid impedance, and then an adaptive control algorithm based on pole assignment principle was studied to adjust the current controller parameters. So the robustness of grid-connected PV inverter system is improved. At last, the simulation and experimental results verified its validity.",

keywords = "Weak grid, adaptive control, grid impedance online detection, grid-connected PV inverter",

author = "Guihua Liu and Xiaojiao Cao and Tong Shi and Wei Wang",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015 ; Conference date: 20-09-2015 Through 24-09-2015",

year = "2015",

month = oct,

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doi = "10.1109/ECCE.2015.7310257",

language = "英语",

series = "2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015",

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}

Liu, G, Cao, X, Shi, T & Wang, W 2015, Research on adaptive control of grid-connected PV inverters in weak grid. in 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015., 7310257, 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015, Institute of Electrical and Electronics Engineers Inc., pp. 4229-4235, 7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015, Montreal, Canada, 20/09/15. https://doi.org/10.1109/ECCE.2015.7310257

Research on adaptive control of grid-connected PV inverters in weak grid. / Liu, Guihua; Cao, Xiaojiao; Shi, Tong et al.
2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. 4229-4235 7310257 (2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015).

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

TY - GEN

T1 - Research on adaptive control of grid-connected PV inverters in weak grid

AU - Liu, Guihua

AU - Cao, Xiaojiao

AU - Shi, Tong

AU - Wang, Wei

PY - 2015/10/27

Y1 - 2015/10/27

N2 - In recent years, with the promotion and application of photovoltaic (PV) technology, research on grid-connected inverters incorporating with weak grid has become a hot field. In general, the large grid impedance will reduce the gain and bandwidth of the control system and slow down the dynamic response, or even lead to resonance and instability of the whole control system. Especially, when the grid impedance changes, the traditional PI controller with fixed parameters will lead to poor control performance. In this article, the control strategy of grid-connected PV inverter in weak grid was researched, so as to improve the adaptation of the whole control system to grid impedance. Firstly, a two harmonic injection method was used to detect the grid impedance, and then an adaptive control algorithm based on pole assignment principle was studied to adjust the current controller parameters. So the robustness of grid-connected PV inverter system is improved. At last, the simulation and experimental results verified its validity.

AB - In recent years, with the promotion and application of photovoltaic (PV) technology, research on grid-connected inverters incorporating with weak grid has become a hot field. In general, the large grid impedance will reduce the gain and bandwidth of the control system and slow down the dynamic response, or even lead to resonance and instability of the whole control system. Especially, when the grid impedance changes, the traditional PI controller with fixed parameters will lead to poor control performance. In this article, the control strategy of grid-connected PV inverter in weak grid was researched, so as to improve the adaptation of the whole control system to grid impedance. Firstly, a two harmonic injection method was used to detect the grid impedance, and then an adaptive control algorithm based on pole assignment principle was studied to adjust the current controller parameters. So the robustness of grid-connected PV inverter system is improved. At last, the simulation and experimental results verified its validity.

KW - Weak grid

KW - adaptive control

KW - grid impedance online detection

KW - grid-connected PV inverter

UR - https://www.scopus.com/pages/publications/84963631936

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DO - 10.1109/ECCE.2015.7310257

M3 - 会议稿件

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T3 - 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015

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BT - 2015 IEEE Energy Conversion Congress and Exposition, ECCE 2015

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 7th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2015

Y2 - 20 September 2015 through 24 September 2015

ER -

Research on adaptive control of grid-connected PV inverters in weak grid

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

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