Single-phase LLCZ-filter-based grid-tied inverter with low-pass filter based capacitor current feedback active damper

Yuan Liu; Weimin Wu; Yun Li; Yuanbin He; Henry Shu-Hung Chung; Frede Blaabjerg

doi:10.1109/ECCE.2016.7855439

Single-phase LLCZ-filter-based grid-tied inverter with low-pass filter based capacitor current feedback active damper

Yuan Liu, Weimin Wu, Yun Li, Yuanbin He, Henry Shu-Hung Chung, Frede Blaabjerg

Centre for Smart Energy Conversion and Utilization Research

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

1 Citation (Scopus)

Abstract

The capacitor-current-feedback active damping method is attractive for high-order-filter-based high power grid-tied inverter when the grid impedance varies within a wide range. In order to improve the system control bandwidth and attenuate the high order grid background harmonics by using the quasi-PR control method, the digital delay is preferred to be reduced as much as possible. However, when the time between the sampling point and the updating point is reduced, the disturbance caused by the switching noises will be easily introduced into the sampling signals, resulting in possible disability. In this paper, a low pass filter is proposed to be inserted in the capacitor current feedback loop of LLCL-filter based grid-tied inverter together with a digital proportional and differential compensator. The detailed theoretical analysis is given. For verification, simulations on a 2kW/220V/10kHz LLCL-filter-based grid-tied inverter have been presented.

Original language	English
Title of host publication	ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings
Publisher	IEEE
ISBN (Print)	9781509007370
DOIs	https://doi.org/10.1109/ECCE.2016.7855439
Publication status	Published - 13 Feb 2017
Event	8th IEEE Energy Conversion Congress and Exposition (ECCE 2016) - Milwaukee, United States Duration: 18 Sept 2016 → 22 Sept 2016 http://www.ieee-ecce.org/2016/

Conference

Conference	8th IEEE Energy Conversion Congress and Exposition (ECCE 2016)
Country/Territory	United States
City	Milwaukee
Period	18/09/16 → 22/09/16
Internet address	http://www.ieee-ecce.org/2016/

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@inproceedings{e7e79186b92340f9a5199c69c66f304a,

title = "Single-phase LLCZ-filter-based grid-tied inverter with low-pass filter based capacitor current feedback active damper",

abstract = "The capacitor-current-feedback active damping method is attractive for high-order-filter-based high power grid-tied inverter when the grid impedance varies within a wide range. In order to improve the system control bandwidth and attenuate the high order grid background harmonics by using the quasi-PR control method, the digital delay is preferred to be reduced as much as possible. However, when the time between the sampling point and the updating point is reduced, the disturbance caused by the switching noises will be easily introduced into the sampling signals, resulting in possible disability. In this paper, a low pass filter is proposed to be inserted in the capacitor current feedback loop of LLCL-filter based grid-tied inverter together with a digital proportional and differential compensator. The detailed theoretical analysis is given. For verification, simulations on a 2kW/220V/10kHz LLCL-filter-based grid-tied inverter have been presented.",

author = "Yuan Liu and Weimin Wu and Yun Li and Yuanbin He and Chung, {Henry Shu-Hung} and Frede Blaabjerg",

year = "2017",

month = feb,

day = "13",

doi = "10.1109/ECCE.2016.7855439",

language = "English",

isbn = "9781509007370",

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

publisher = "IEEE",

address = "United States",

note = "8th IEEE Energy Conversion Congress and Exposition (ECCE 2016) ; Conference date: 18-09-2016 Through 22-09-2016",

url = "http://www.ieee-ecce.org/2016/",

}

Liu, Y, Wu, W, Li, Y, He, Y, Chung, HS-H & Blaabjerg, F 2017, Single-phase LLCZ-filter-based grid-tied inverter with low-pass filter based capacitor current feedback active damper. in ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings., 7855439, IEEE, 8th IEEE Energy Conversion Congress and Exposition (ECCE 2016), Milwaukee, Wisconsin, United States, 18/09/16. https://doi.org/10.1109/ECCE.2016.7855439

Single-phase LLCZ-filter-based grid-tied inverter with low-pass filter based capacitor current feedback active damper. / Liu, Yuan; Wu, Weimin; Li, Yun et al.
ECCE 2016 - IEEE Energy Conversion Congress and Exposition, Proceedings. IEEE, 2017. 7855439.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Single-phase LLCZ-filter-based grid-tied inverter with low-pass filter based capacitor current feedback active damper

AU - Liu, Yuan

AU - Wu, Weimin

AU - Li, Yun

AU - He, Yuanbin

AU - Chung, Henry Shu-Hung

AU - Blaabjerg, Frede

PY - 2017/2/13

Y1 - 2017/2/13

N2 - The capacitor-current-feedback active damping method is attractive for high-order-filter-based high power grid-tied inverter when the grid impedance varies within a wide range. In order to improve the system control bandwidth and attenuate the high order grid background harmonics by using the quasi-PR control method, the digital delay is preferred to be reduced as much as possible. However, when the time between the sampling point and the updating point is reduced, the disturbance caused by the switching noises will be easily introduced into the sampling signals, resulting in possible disability. In this paper, a low pass filter is proposed to be inserted in the capacitor current feedback loop of LLCL-filter based grid-tied inverter together with a digital proportional and differential compensator. The detailed theoretical analysis is given. For verification, simulations on a 2kW/220V/10kHz LLCL-filter-based grid-tied inverter have been presented.

AB - The capacitor-current-feedback active damping method is attractive for high-order-filter-based high power grid-tied inverter when the grid impedance varies within a wide range. In order to improve the system control bandwidth and attenuate the high order grid background harmonics by using the quasi-PR control method, the digital delay is preferred to be reduced as much as possible. However, when the time between the sampling point and the updating point is reduced, the disturbance caused by the switching noises will be easily introduced into the sampling signals, resulting in possible disability. In this paper, a low pass filter is proposed to be inserted in the capacitor current feedback loop of LLCL-filter based grid-tied inverter together with a digital proportional and differential compensator. The detailed theoretical analysis is given. For verification, simulations on a 2kW/220V/10kHz LLCL-filter-based grid-tied inverter have been presented.

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DO - 10.1109/ECCE.2016.7855439

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 9781509007370

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

PB - IEEE

T2 - 8th IEEE Energy Conversion Congress and Exposition (ECCE 2016)

Y2 - 18 September 2016 through 22 September 2016

ER -

Single-phase LLCZ-filter-based grid-tied inverter with low-pass filter based capacitor current feedback active damper

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