Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS

Yuanbin He; Chun-tak Lai; Shu-hung Chung; Xin Zhang; Weimin Wu

doi:10.1109/APEC.2018.8341347

Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS

Yuanbin He, Chun-tak Lai, Shu-hung Chung, Xin Zhang, Weimin Wu

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

An active grid impedance cancellator is proposed to suppress the effect of the grid disturbance and stabilize the distributed power generation (DPG) grid-connected inverters operating under the weak grid. Harmonic interaction between the DPG inverter and the grid is thereby avoided owing to the cancellation of equivalent grid impedance. The impedance cancellator composed of a full-bridge dc-ac converter without passive filtering elements is connected in series at the inverter output to simulate a negative virtual grid impedance. In addition, an active damping function is integrated to suppress the filter resonance of the inverter. In the paper, the system configuration and the control strategy of the impedance cancellator are introduced. The power consumption of the cancellator is also evaluated. A single-phase grid-connected inverter prototype has been built to verify the effectiveness of the proposed method. The experimental results show a good agreement with the theoretical knowledge.

Original language	English
Title of host publication	2018 IEEE Applied Power Electronics Conference and Exposition (APEC)
Publisher	IEEE
Pages	2368-2373
ISBN (Electronic)	9781538611807
DOIs	https://doi.org/10.1109/APEC.2018.8341347
Publication status	Published - Mar 2018
Event	33rd Annual IEEE Applied Power Electronics Conference and Exposition (APEC 2018) - Henry B. Gonzalez Convention Center, San Antonio, United States Duration: 4 Mar 2018 → 8 Mar 2018 http://www.apec-conf.org/

Publication series

Name	Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC)
Publisher	IEEE
ISSN (Electronic)	2470-6647

Conference

Conference	33rd Annual IEEE Applied Power Electronics Conference and Exposition (APEC 2018)
Place	United States
City	San Antonio
Period	4/03/18 → 8/03/18
Internet address	http://www.apec-conf.org/

Research Keywords

Active damping
Grid impedance cancellator
Inverter
LCL filter

Access Output

10.1109/APEC.2018.8341347

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

He, Y., Lai, C., Chung, S., Zhang, X., & Wu, W. (2018). Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS. In 2018 IEEE Applied Power Electronics Conference and Exposition (APEC) (pp. 2368-2373). (Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC)). IEEE. https://doi.org/10.1109/APEC.2018.8341347

He, Yuanbin ; Lai, Chun-tak ; Chung, Shu-hung et al. / Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS. 2018 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2018. pp. 2368-2373 (Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC)).

@inproceedings{34c1b0f3d9b24e8a805a3e6a5d6b0b2f,

title = "Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS",

abstract = "An active grid impedance cancellator is proposed to suppress the effect of the grid disturbance and stabilize the distributed power generation (DPG) grid-connected inverters operating under the weak grid. Harmonic interaction between the DPG inverter and the grid is thereby avoided owing to the cancellation of equivalent grid impedance. The impedance cancellator composed of a full-bridge dc-ac converter without passive filtering elements is connected in series at the inverter output to simulate a negative virtual grid impedance. In addition, an active damping function is integrated to suppress the filter resonance of the inverter. In the paper, the system configuration and the control strategy of the impedance cancellator are introduced. The power consumption of the cancellator is also evaluated. A single-phase grid-connected inverter prototype has been built to verify the effectiveness of the proposed method. The experimental results show a good agreement with the theoretical knowledge.",

keywords = "Active damping, Grid impedance cancellator, Inverter, LCL filter",

author = "Yuanbin He and Chun-tak Lai and Shu-hung Chung and Xin Zhang and Weimin Wu",

year = "2018",

month = mar,

doi = "10.1109/APEC.2018.8341347",

language = "English",

series = "Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC)",

publisher = "IEEE",

pages = "2368--2373",

booktitle = "2018 IEEE Applied Power Electronics Conference and Exposition (APEC)",

address = "United States",

note = "33rd Annual IEEE Applied Power Electronics Conference and Exposition (APEC 2018) ; Conference date: 04-03-2018 Through 08-03-2018",

url = "http://www.apec-conf.org/",

}

He, Y, Lai, C , Chung, S, Zhang, X & Wu, W 2018, Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS. in 2018 IEEE Applied Power Electronics Conference and Exposition (APEC). Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC), IEEE, pp. 2368-2373, 33rd Annual IEEE Applied Power Electronics Conference and Exposition (APEC 2018), San Antonio, Texas, United States, 4/03/18. https://doi.org/10.1109/APEC.2018.8341347

Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS. / He, Yuanbin; Lai, Chun-tak ; Chung, Shu-hung et al.
2018 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE, 2018. p. 2368-2373 (Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC)).

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

TY - GEN

T1 - Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS

AU - He, Yuanbin

AU - Lai, Chun-tak

AU - Chung, Shu-hung

AU - Zhang, Xin

AU - Wu, Weimin

PY - 2018/3

Y1 - 2018/3

N2 - An active grid impedance cancellator is proposed to suppress the effect of the grid disturbance and stabilize the distributed power generation (DPG) grid-connected inverters operating under the weak grid. Harmonic interaction between the DPG inverter and the grid is thereby avoided owing to the cancellation of equivalent grid impedance. The impedance cancellator composed of a full-bridge dc-ac converter without passive filtering elements is connected in series at the inverter output to simulate a negative virtual grid impedance. In addition, an active damping function is integrated to suppress the filter resonance of the inverter. In the paper, the system configuration and the control strategy of the impedance cancellator are introduced. The power consumption of the cancellator is also evaluated. A single-phase grid-connected inverter prototype has been built to verify the effectiveness of the proposed method. The experimental results show a good agreement with the theoretical knowledge.

AB - An active grid impedance cancellator is proposed to suppress the effect of the grid disturbance and stabilize the distributed power generation (DPG) grid-connected inverters operating under the weak grid. Harmonic interaction between the DPG inverter and the grid is thereby avoided owing to the cancellation of equivalent grid impedance. The impedance cancellator composed of a full-bridge dc-ac converter without passive filtering elements is connected in series at the inverter output to simulate a negative virtual grid impedance. In addition, an active damping function is integrated to suppress the filter resonance of the inverter. In the paper, the system configuration and the control strategy of the impedance cancellator are introduced. The power consumption of the cancellator is also evaluated. A single-phase grid-connected inverter prototype has been built to verify the effectiveness of the proposed method. The experimental results show a good agreement with the theoretical knowledge.

KW - Active damping

KW - Grid impedance cancellator

KW - Inverter

KW - LCL filter

UR - http://www.scopus.com/inward/record.url?scp=85046965686&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85046965686&origin=recordpage

U2 - 10.1109/APEC.2018.8341347

DO - 10.1109/APEC.2018.8341347

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

T3 - Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC)

SP - 2368

EP - 2373

BT - 2018 IEEE Applied Power Electronics Conference and Exposition (APEC)

PB - IEEE

T2 - 33rd Annual IEEE Applied Power Electronics Conference and Exposition (APEC 2018)

Y2 - 4 March 2018 through 8 March 2018

ER -

He Y, Lai C , Chung S, Zhang X, Wu W. Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS. In 2018 IEEE Applied Power Electronics Conference and Exposition (APEC). IEEE. 2018. p. 2368-2373. (Annual IEEE Conference Applied Power Electronics Conference and Exposition (APEC)). doi: 10.1109/APEC.2018.8341347

Use of Series Negative Impedance to Cancel the Effect of Equivalent Grid Impedance on the GridConnected Inverter Stability in the DPGS

Abstract

Publication series

Conference

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Cite this