Active Damping of LCL-Filter Resonance Using a Digital Resonant-Notch (Biquad) Filter

Donghua Pan; Xiongfei Wang; Frede Blaabjerg; Hong Gong

Active Damping of LCL-Filter Resonance Using a Digital Resonant-Notch (Biquad) Filter

Donghua Pan, Xiongfei Wang, Frede Blaabjerg, Hong Gong

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

13 Citations (Scopus)

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Abstract

The LCL filter is a fundamental component which interfaces a voltage-source inverter (VSI) with a power grid, but on the other hand, it introduces a potential resonance risk which may be harmful to the system stability. In this paper, a digital biquad filter, which consists of a resonance and a notch, is proposed to damp the LCL resonance. By carefully tuning the resonance frequency and the notch frequency of the biquad filter, the LCL resonance is equivalently shifted from an unstable region into a stable one. The proposed method possesses a sensor-less benefit, and it can provide a high control bandwidth as well as a strong robustness. Experimental results acquired from a three-phase grid-connected inverter verify the effectiveness of the biquad filter.

Original language	English
Title of host publication	Proceedings of 2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)
Number of pages	9
Publisher	IEEE
Publication date	30 Oct 2018
Pages	1-9
Article number	8515419
ISBN (Print)	978-1-5386-4145-3
ISBN (Electronic)	978-9-0758-1528-3
Publication status	Published - 30 Oct 2018
Event	20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe) - Riga, Latvia Duration: 17 Sept 2018 → 21 Sept 2018

Conference

Conference	20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)
Country/Territory	Latvia
City	Riga
Period	17/09/2018 → 21/09/2018

Keywords

Active damping
Digital control
Pulse Width Modulation (PWM)
Robustness
Voltage Source Inverters (VSI)

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Active Damping of LCL-Filter Resonance Using a Digital Resonant-Notch (Biquad) FilterAccepted author manuscript, 913 KB

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@inproceedings{bcc20aaa5bbc4dfbbd509940586cbb08,

title = "Active Damping of LCL-Filter Resonance Using a Digital Resonant-Notch (Biquad) Filter",

abstract = "The LCL filter is a fundamental component which interfaces a voltage-source inverter (VSI) with a power grid, but on the other hand, it introduces a potential resonance risk which may be harmful to the system stability. In this paper, a digital biquad filter, which consists of a resonance and a notch, is proposed to damp the LCL resonance. By carefully tuning the resonance frequency and the notch frequency of the biquad filter, the LCL resonance is equivalently shifted from an unstable region into a stable one. The proposed method possesses a sensor-less benefit, and it can provide a high control bandwidth as well as a strong robustness. Experimental results acquired from a three-phase grid-connected inverter verify the effectiveness of the biquad filter.",

keywords = "Active damping, Digital control, Pulse Width Modulation (PWM), Robustness, Voltage Source Inverters (VSI)",

author = "Donghua Pan and Xiongfei Wang and Frede Blaabjerg and Hong Gong",

year = "2018",

month = oct,

day = "30",

language = "English",

isbn = "978-1-5386-4145-3",

pages = "1--9",

booktitle = "Proceedings of 2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)",

publisher = "IEEE",

address = "United States",

note = "20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe), EPE'18 ECCE Europe ; Conference date: 17-09-2018 Through 21-09-2018",

}

Pan, D, Wang, X , Blaabjerg, F & Gong, H 2018, Active Damping of LCL-Filter Resonance Using a Digital Resonant-Notch (Biquad) Filter. in Proceedings of 2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)., 8515419, IEEE, pp. 1-9, 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe), Riga, Latvia, 17/09/2018. <https://ieeexplore.ieee.org/document/8515419>

Active Damping of LCL-Filter Resonance Using a Digital Resonant-Notch (Biquad) Filter. / Pan, Donghua; Wang, Xiongfei ; Blaabjerg, Frede et al.
Proceedings of 2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe). IEEE, 2018. p. 1-9 8515419.

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

TY - GEN

T1 - Active Damping of LCL-Filter Resonance Using a Digital Resonant-Notch (Biquad) Filter

AU - Pan, Donghua

AU - Wang, Xiongfei

AU - Blaabjerg, Frede

AU - Gong, Hong

PY - 2018/10/30

Y1 - 2018/10/30

N2 - The LCL filter is a fundamental component which interfaces a voltage-source inverter (VSI) with a power grid, but on the other hand, it introduces a potential resonance risk which may be harmful to the system stability. In this paper, a digital biquad filter, which consists of a resonance and a notch, is proposed to damp the LCL resonance. By carefully tuning the resonance frequency and the notch frequency of the biquad filter, the LCL resonance is equivalently shifted from an unstable region into a stable one. The proposed method possesses a sensor-less benefit, and it can provide a high control bandwidth as well as a strong robustness. Experimental results acquired from a three-phase grid-connected inverter verify the effectiveness of the biquad filter.

AB - The LCL filter is a fundamental component which interfaces a voltage-source inverter (VSI) with a power grid, but on the other hand, it introduces a potential resonance risk which may be harmful to the system stability. In this paper, a digital biquad filter, which consists of a resonance and a notch, is proposed to damp the LCL resonance. By carefully tuning the resonance frequency and the notch frequency of the biquad filter, the LCL resonance is equivalently shifted from an unstable region into a stable one. The proposed method possesses a sensor-less benefit, and it can provide a high control bandwidth as well as a strong robustness. Experimental results acquired from a three-phase grid-connected inverter verify the effectiveness of the biquad filter.

KW - Active damping

KW - Digital control

KW - Pulse Width Modulation (PWM)

KW - Robustness

KW - Voltage Source Inverters (VSI)

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M3 - Article in proceeding

SN - 978-1-5386-4145-3

SP - 1

EP - 9

BT - Proceedings of 2018 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)

PB - IEEE

T2 - 20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)

Y2 - 17 September 2018 through 21 September 2018

ER -

Active Damping of LCL-Filter Resonance Using a Digital Resonant-Notch (Biquad) Filter

Abstract

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Keywords

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HARMONY: HARMONY - Harmonic identification, mitigation and control in power electronics based power systems

Cite this

Active Damping of LCL-Filter Resonance Using a Digital Resonant-Notch (Biquad) Filter

Abstract

Conference

Keywords

Access to Document

AUB Link

Other files and links

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Projects

HARMONY: HARMONY - Harmonic identification, mitigation and control in power electronics based power systems

Cite this