An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems

Hongpeng Liu; Yongheng Yang; Xiongfei Wang; Poh Chiang Loh; Frede Blaabjerg; Wei Wang; Dianguo Xu

doi:10.1109/APEC.2016.7468029

An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems

Hongpeng Liu
, Yongheng Yang
, Xiongfei Wang
, Poh Chiang Loh
, Frede Blaabjerg
, Wei Wang
, Dianguo Xu

School of Electrical Engineering and Automation

Harbin Institute of Technology
Aalborg University

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

8 Scopus citations

Abstract

Traditional droop-controlled systems assume that the generators are able to provide sufficient power as required. This is however not always true, especially in renewable systems, where the energy sources (e.g., photovoltaic source) may not be able to provide enough power (or even loss of power generation) due to the intermittency. In that case, unbalance in active power generation may occur among the paralleled systems. Additionally, most droop-controlled systems have been assumed to be a single dc-ac inverter with a fixed dc input source. The dc-dc converter as the front-end of a two-stage photovoltaic (PV) system has not been considered. In this paper, an enhanced droop scheme is thus proposed to address those issues, and the proposed scheme can enable resilient active power sharing in parallel two-stage PV inverter systems. Furthermore, a small-signal analysis for the proposed droop control strategy is carried out. Experiments have verified the effectiveness of the proposed droop control scheme.

Original language	English
Title of host publication	2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1253-1260
Number of pages	8
ISBN (Electronic)	9781467383936
DOIs	https://doi.org/10.1109/APEC.2016.7468029
State	Published - 10 May 2016
Event	31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016 - Long Beach, United States Duration: 20 Mar 2016 → 24 Mar 2016

Publication series

Name	Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume	2016-May

Conference

Conference	31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016
Country/Territory	United States
City	Long Beach
Period	20/03/16 → 24/03/16

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

active power sharing
droop control
microgrid
single-phase systems
small-signal model
two-stage PV systems

Access to Document

10.1109/APEC.2016.7468029

Cite this

Liu, H., Yang, Y., Wang, X., Loh, P. C., Blaabjerg, F., Wang, W., & Xu, D. (2016). An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems. In 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016 (pp. 1253-1260). Article 7468029 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2016-May). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APEC.2016.7468029

Liu, Hongpeng ; Yang, Yongheng ; Wang, Xiongfei et al. / An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems. 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016. Institute of Electrical and Electronics Engineers Inc., 2016. pp. 1253-1260 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC).

@inproceedings{bbf360221e7f47d9bd4c6cad59a6674d,

title = "An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems",

abstract = "Traditional droop-controlled systems assume that the generators are able to provide sufficient power as required. This is however not always true, especially in renewable systems, where the energy sources (e.g., photovoltaic source) may not be able to provide enough power (or even loss of power generation) due to the intermittency. In that case, unbalance in active power generation may occur among the paralleled systems. Additionally, most droop-controlled systems have been assumed to be a single dc-ac inverter with a fixed dc input source. The dc-dc converter as the front-end of a two-stage photovoltaic (PV) system has not been considered. In this paper, an enhanced droop scheme is thus proposed to address those issues, and the proposed scheme can enable resilient active power sharing in parallel two-stage PV inverter systems. Furthermore, a small-signal analysis for the proposed droop control strategy is carried out. Experiments have verified the effectiveness of the proposed droop control scheme.",

keywords = "active power sharing, droop control, microgrid, single-phase systems, small-signal model, two-stage PV systems",

author = "Hongpeng Liu and Yongheng Yang and Xiongfei Wang and Loh, \{Poh Chiang\} and Frede Blaabjerg and Wei Wang and Dianguo Xu",

note = "Publisher Copyright: {\textcopyright} 2016 IEEE.; 31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016 ; Conference date: 20-03-2016 Through 24-03-2016",

year = "2016",

month = may,

day = "10",

doi = "10.1109/APEC.2016.7468029",

language = "英语",

series = "Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "1253--1260",

booktitle = "2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016",

address = "美国",

}

Liu, H, Yang, Y, Wang, X, Loh, PC, Blaabjerg, F, Wang, W & Xu, D 2016, An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems. in 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016., 7468029, Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC, vol. 2016-May, Institute of Electrical and Electronics Engineers Inc., pp. 1253-1260, 31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016, Long Beach, United States, 20/03/16. https://doi.org/10.1109/APEC.2016.7468029

An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems. / Liu, Hongpeng; Yang, Yongheng; Wang, Xiongfei et al.
2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016. Institute of Electrical and Electronics Engineers Inc., 2016. p. 1253-1260 7468029 (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC; Vol. 2016-May).

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

TY - GEN

T1 - An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems

AU - Liu, Hongpeng

AU - Yang, Yongheng

AU - Wang, Xiongfei

AU - Loh, Poh Chiang

AU - Blaabjerg, Frede

AU - Wang, Wei

AU - Xu, Dianguo

PY - 2016/5/10

Y1 - 2016/5/10

N2 - Traditional droop-controlled systems assume that the generators are able to provide sufficient power as required. This is however not always true, especially in renewable systems, where the energy sources (e.g., photovoltaic source) may not be able to provide enough power (or even loss of power generation) due to the intermittency. In that case, unbalance in active power generation may occur among the paralleled systems. Additionally, most droop-controlled systems have been assumed to be a single dc-ac inverter with a fixed dc input source. The dc-dc converter as the front-end of a two-stage photovoltaic (PV) system has not been considered. In this paper, an enhanced droop scheme is thus proposed to address those issues, and the proposed scheme can enable resilient active power sharing in parallel two-stage PV inverter systems. Furthermore, a small-signal analysis for the proposed droop control strategy is carried out. Experiments have verified the effectiveness of the proposed droop control scheme.

AB - Traditional droop-controlled systems assume that the generators are able to provide sufficient power as required. This is however not always true, especially in renewable systems, where the energy sources (e.g., photovoltaic source) may not be able to provide enough power (or even loss of power generation) due to the intermittency. In that case, unbalance in active power generation may occur among the paralleled systems. Additionally, most droop-controlled systems have been assumed to be a single dc-ac inverter with a fixed dc input source. The dc-dc converter as the front-end of a two-stage photovoltaic (PV) system has not been considered. In this paper, an enhanced droop scheme is thus proposed to address those issues, and the proposed scheme can enable resilient active power sharing in parallel two-stage PV inverter systems. Furthermore, a small-signal analysis for the proposed droop control strategy is carried out. Experiments have verified the effectiveness of the proposed droop control scheme.

KW - active power sharing

KW - droop control

KW - microgrid

KW - single-phase systems

KW - small-signal model

KW - two-stage PV systems

UR - https://www.scopus.com/pages/publications/84973643442

U2 - 10.1109/APEC.2016.7468029

DO - 10.1109/APEC.2016.7468029

M3 - 会议稿件

AN - SCOPUS:84973643442

T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

SP - 1253

EP - 1260

BT - 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016

Y2 - 20 March 2016 through 24 March 2016

ER -

Liu H, Yang Y, Wang X, Loh PC, Blaabjerg F, Wang W et al. An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems. In 2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016. Institute of Electrical and Electronics Engineers Inc. 2016. p. 1253-1260. 7468029. (Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC). doi: 10.1109/APEC.2016.7468029

An enhanced droop control scheme for resilient active power sharing in paralleled two-stage PV inverter systems

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

Cite this