Grid-Voltage-Feedforward Active Damping for Grid-Connected Inverter with LCL Filter

Minghui Lu; Xiongfei Wang; Frede Blaabjerg; S.M. Muyeen; Ahmed  Al-Durra; Siyu Leng

doi:10.1109/APEC.2016.7468134

Grid-Voltage-Feedforward Active Damping for Grid-Connected Inverter with LCL Filter

Minghui Lu, Xiongfei Wang, Frede Blaabjerg, S.M. Muyeen, Ahmed Al-Durra, Siyu Leng

AAU Energy

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

21 Citations (Scopus)

Abstract

For the grid-connected voltage source inverters, the feedforward scheme of grid voltage is commonly adopted to mitigate the current distortion caused by grid background voltages harmonics. This paper investigates the grid-voltage-feedforward active damping for grid connected inverter with LCL filter. It reveals that proportional feedforward control can not only fulfill the mitigation of grid disturbance, but also offer damping effects on the LCL filter resonance. Digital delays are intrinsic to digital controlled inverters; with these delays, the feedforward control can be equivalent to a damping resistor and a reactance paralleled with filter capacitor. The damping performance in different frequency regions are discussed through Bode diagrams. Compared to other widely used active damping strategies, no extra sensor is needed because the Point of Common Coupling (PCC) voltage is sampled for Phase Locked Loop (PLL). Simulation and experiment results are provided for verifying the theoretical analyses.

Original language	English
Title of host publication	Proceedings of the 31st Annual IEEE Applied Power Electronics Conference and Exposition (APEC)
Number of pages	6
Place of Publication	Long Beach, CA, US
Publisher	IEEE Press
Publication date	Mar 2016
Pages	1941 - 1946
ISBN (Print)	978-1-4673-8393-6 , 978-1-4673-9551-9
ISBN (Electronic)	978-1-4673-9550-2
DOIs	https://doi.org/10.1109/APEC.2016.7468134
Publication status	Published - Mar 2016
Event	2016 IEEE Applied Power Electronics Conference and Exposition (APEC) - Long Beach Convention and Entertainment Center, Long Beach, United States Duration: 20 Mar 2016 → 24 Mar 2016 http://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=32616

Conference

Conference	2016 IEEE Applied Power Electronics Conference and Exposition (APEC)
Location	Long Beach Convention and Entertainment Center
Country/Territory	United States
City	Long Beach
Period	20/03/2016 → 24/03/2016
Internet address	http://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=32616

Keywords

Digital time delay
Feedforward control
Grid-connected inverter
LCL filter
Resonance damping

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Cite this

@inproceedings{884b7a58cb184b7683862b7fb310f6cf,

title = "Grid-Voltage-Feedforward Active Damping for Grid-Connected Inverter with LCL Filter",

abstract = "For the grid-connected voltage source inverters, the feedforward scheme of grid voltage is commonly adopted to mitigate the current distortion caused by grid background voltages harmonics. This paper investigates the grid-voltage-feedforward active damping for grid connected inverter with LCL filter. It reveals that proportional feedforward control can not only fulfill the mitigation of grid disturbance, but also offer damping effects on the LCL filter resonance. Digital delays are intrinsic to digital controlled inverters; with these delays, the feedforward control can be equivalent to a damping resistor and a reactance paralleled with filter capacitor. The damping performance in different frequency regions are discussed through Bode diagrams. Compared to other widely used active damping strategies, no extra sensor is needed because the Point of Common Coupling (PCC) voltage is sampled for Phase Locked Loop (PLL). Simulation and experiment results are provided for verifying the theoretical analyses.",

keywords = "Digital time delay, Feedforward control, Grid-connected inverter, LCL filter, Resonance damping",

author = "Minghui Lu and Xiongfei Wang and Frede Blaabjerg and S.M. Muyeen and Ahmed Al-Durra and Siyu Leng",

year = "2016",

month = mar,

doi = "10.1109/APEC.2016.7468134",

language = "English",

isbn = "978-1-4673-8393-6 ",

pages = "1941 -- 1946",

booktitle = "Proceedings of the 31st Annual IEEE Applied Power Electronics Conference and Exposition (APEC)",

publisher = "IEEE Press",

note = "2016 IEEE Applied Power Electronics Conference and Exposition (APEC) ; Conference date: 20-03-2016 Through 24-03-2016",

url = "http://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=32616",

}

Lu, M, Wang, X , Blaabjerg, F, Muyeen, SM, Al-Durra, A & Leng, S 2016, Grid-Voltage-Feedforward Active Damping for Grid-Connected Inverter with LCL Filter. in Proceedings of the 31st Annual IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE Press, Long Beach, CA, US, pp. 1941 - 1946, 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, United States, 20/03/2016. https://doi.org/10.1109/APEC.2016.7468134

Grid-Voltage-Feedforward Active Damping for Grid-Connected Inverter with LCL Filter. / Lu, Minghui; Wang, Xiongfei ; Blaabjerg, Frede et al.
Proceedings of the 31st Annual IEEE Applied Power Electronics Conference and Exposition (APEC). Long Beach, CA, US: IEEE Press, 2016. p. 1941 - 1946.

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

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AU - Lu, Minghui

AU - Wang, Xiongfei

AU - Blaabjerg, Frede

AU - Muyeen, S.M.

AU - Al-Durra, Ahmed

AU - Leng, Siyu

PY - 2016/3

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N2 - For the grid-connected voltage source inverters, the feedforward scheme of grid voltage is commonly adopted to mitigate the current distortion caused by grid background voltages harmonics. This paper investigates the grid-voltage-feedforward active damping for grid connected inverter with LCL filter. It reveals that proportional feedforward control can not only fulfill the mitigation of grid disturbance, but also offer damping effects on the LCL filter resonance. Digital delays are intrinsic to digital controlled inverters; with these delays, the feedforward control can be equivalent to a damping resistor and a reactance paralleled with filter capacitor. The damping performance in different frequency regions are discussed through Bode diagrams. Compared to other widely used active damping strategies, no extra sensor is needed because the Point of Common Coupling (PCC) voltage is sampled for Phase Locked Loop (PLL). Simulation and experiment results are provided for verifying the theoretical analyses.

AB - For the grid-connected voltage source inverters, the feedforward scheme of grid voltage is commonly adopted to mitigate the current distortion caused by grid background voltages harmonics. This paper investigates the grid-voltage-feedforward active damping for grid connected inverter with LCL filter. It reveals that proportional feedforward control can not only fulfill the mitigation of grid disturbance, but also offer damping effects on the LCL filter resonance. Digital delays are intrinsic to digital controlled inverters; with these delays, the feedforward control can be equivalent to a damping resistor and a reactance paralleled with filter capacitor. The damping performance in different frequency regions are discussed through Bode diagrams. Compared to other widely used active damping strategies, no extra sensor is needed because the Point of Common Coupling (PCC) voltage is sampled for Phase Locked Loop (PLL). Simulation and experiment results are provided for verifying the theoretical analyses.

KW - Digital time delay

KW - Feedforward control

KW - Grid-connected inverter

KW - LCL filter

KW - Resonance damping

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M3 - Article in proceeding

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SN - 978-1-4673-9551-9

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BT - Proceedings of the 31st Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

PB - IEEE Press

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Y2 - 20 March 2016 through 24 March 2016

ER -

Grid-Voltage-Feedforward Active Damping for Grid-Connected Inverter with LCL Filter

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