A Novel Method to Identify the "Trouble Maker" of Internal Instability in Multi-paralleled Inverters System

Weimin Wu; Zhijun Zhao; Frede Blaabjerg; Henry Chung

doi:10.1109/IPEMC-ECCEAsia48364.2020.9368188

A Novel Method to Identify the "Trouble Maker" of Internal Instability in Multi-paralleled Inverters System

Weimin Wu
, Zhijun Zhao
, Frede Blaabjerg
, Henry Chung

Department of Electrical Engineering

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

Abstract

Instability in multi-paralleled LCL-filtered grid-connected inverters system always presents that each inverter is unstable due to the coupling of grid impedance. During stability analysis of multi-paralleled inverters system, which inverter or inverters ("trouble maker or makers") contributes or contribute instability to whole system is rarely studied. In this paper, a novel identification method is proposed to exactly judge the "trouble maker or makers" of instability in a multi-paralleled inverters system, based on the comparison result between the root mean square (RMS) value of harmonic voltage in the common coupling point (PCC) and the one across the filter capacitor. The simulation and experimental results are provided for verification.

Original language	English
Title of host publication	Proceedings 2020 IEEE 9th International Power Electronics and Motion Control Conference
Subtitle of host publication	IPEMC2020-ECCE Asia
Publisher	IEEE
Pages	3335-3340
ISBN (Electronic)	9781728153018
ISBN (Print)	9781728153025
DOIs	https://doi.org/10.1109/IPEMC-ECCEAsia48364.2020.9368188
Publication status	Published - Nov 2020
Event	9th IEEE International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia) - International Youth Cultural Centre, Nanjing, China Duration: 29 Nov 2020 → 2 Dec 2020 http://ipemc2020.com/

Publication series

Name	IEEE International Power Electronics and Motion Control Conference, IPEMC ECCE Asia

Conference

Conference	9th IEEE International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)
Place	China
City	Nanjing
Period	29/11/20 → 2/12/20
Internet address	http://ipemc2020.com/

Research Keywords

identification method
instability contribution
internal instability
Multi-paralleled inverters

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10.1109/IPEMC-ECCEAsia48364.2020.9368188

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Wu, W., Zhao, Z., Blaabjerg, F., & Chung, H. (2020). A Novel Method to Identify the "Trouble Maker" of Internal Instability in Multi-paralleled Inverters System. In Proceedings 2020 IEEE 9th International Power Electronics and Motion Control Conference: IPEMC2020-ECCE Asia (pp. 3335-3340). Article 9368188 (IEEE International Power Electronics and Motion Control Conference, IPEMC ECCE Asia). IEEE. https://doi.org/10.1109/IPEMC-ECCEAsia48364.2020.9368188

Wu, Weimin ; Zhao, Zhijun ; Blaabjerg, Frede et al. / A Novel Method to Identify the "Trouble Maker" of Internal Instability in Multi-paralleled Inverters System. Proceedings 2020 IEEE 9th International Power Electronics and Motion Control Conference: IPEMC2020-ECCE Asia. IEEE, 2020. pp. 3335-3340 (IEEE International Power Electronics and Motion Control Conference, IPEMC ECCE Asia).

@inproceedings{c6b8e45e223f4bdeb1eaf10b9cd5aec6,

title = "A Novel Method to Identify the {"}Trouble Maker{"} of Internal Instability in Multi-paralleled Inverters System",

abstract = "Instability in multi-paralleled LCL-filtered grid-connected inverters system always presents that each inverter is unstable due to the coupling of grid impedance. During stability analysis of multi-paralleled inverters system, which inverter or inverters ({"}trouble maker or makers{"}) contributes or contribute instability to whole system is rarely studied. In this paper, a novel identification method is proposed to exactly judge the {"}trouble maker or makers{"} of instability in a multi-paralleled inverters system, based on the comparison result between the root mean square (RMS) value of harmonic voltage in the common coupling point (PCC) and the one across the filter capacitor. The simulation and experimental results are provided for verification.",

keywords = "identification method, instability contribution, internal instability, Multi-paralleled inverters",

author = "Weimin Wu and Zhijun Zhao and Frede Blaabjerg and Henry Chung",

year = "2020",

month = nov,

doi = "10.1109/IPEMC-ECCEAsia48364.2020.9368188",

language = "English",

isbn = "9781728153025",

series = "IEEE International Power Electronics and Motion Control Conference, IPEMC ECCE Asia",

publisher = "IEEE",

pages = "3335--3340",

booktitle = "Proceedings 2020 IEEE 9th International Power Electronics and Motion Control Conference",

address = "United States",

note = "9th IEEE International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia) ; Conference date: 29-11-2020 Through 02-12-2020",

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Wu, W, Zhao, Z, Blaabjerg, F & Chung, H 2020, A Novel Method to Identify the "Trouble Maker" of Internal Instability in Multi-paralleled Inverters System. in Proceedings 2020 IEEE 9th International Power Electronics and Motion Control Conference: IPEMC2020-ECCE Asia., 9368188, IEEE International Power Electronics and Motion Control Conference, IPEMC ECCE Asia, IEEE, pp. 3335-3340, 9th IEEE International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), Nanjing, China, 29/11/20. https://doi.org/10.1109/IPEMC-ECCEAsia48364.2020.9368188

A Novel Method to Identify the "Trouble Maker" of Internal Instability in Multi-paralleled Inverters System. / Wu, Weimin; Zhao, Zhijun; Blaabjerg, Frede et al.
Proceedings 2020 IEEE 9th International Power Electronics and Motion Control Conference: IPEMC2020-ECCE Asia. IEEE, 2020. p. 3335-3340 9368188 (IEEE International Power Electronics and Motion Control Conference, IPEMC ECCE Asia).

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

TY - GEN

T1 - A Novel Method to Identify the "Trouble Maker" of Internal Instability in Multi-paralleled Inverters System

AU - Wu, Weimin

AU - Zhao, Zhijun

AU - Blaabjerg, Frede

AU - Chung, Henry

PY - 2020/11

Y1 - 2020/11

N2 - Instability in multi-paralleled LCL-filtered grid-connected inverters system always presents that each inverter is unstable due to the coupling of grid impedance. During stability analysis of multi-paralleled inverters system, which inverter or inverters ("trouble maker or makers") contributes or contribute instability to whole system is rarely studied. In this paper, a novel identification method is proposed to exactly judge the "trouble maker or makers" of instability in a multi-paralleled inverters system, based on the comparison result between the root mean square (RMS) value of harmonic voltage in the common coupling point (PCC) and the one across the filter capacitor. The simulation and experimental results are provided for verification.

AB - Instability in multi-paralleled LCL-filtered grid-connected inverters system always presents that each inverter is unstable due to the coupling of grid impedance. During stability analysis of multi-paralleled inverters system, which inverter or inverters ("trouble maker or makers") contributes or contribute instability to whole system is rarely studied. In this paper, a novel identification method is proposed to exactly judge the "trouble maker or makers" of instability in a multi-paralleled inverters system, based on the comparison result between the root mean square (RMS) value of harmonic voltage in the common coupling point (PCC) and the one across the filter capacitor. The simulation and experimental results are provided for verification.

KW - identification method

KW - instability contribution

KW - internal instability

KW - Multi-paralleled inverters

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U2 - 10.1109/IPEMC-ECCEAsia48364.2020.9368188

DO - 10.1109/IPEMC-ECCEAsia48364.2020.9368188

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

SN - 9781728153025

T3 - IEEE International Power Electronics and Motion Control Conference, IPEMC ECCE Asia

SP - 3335

EP - 3340

BT - Proceedings 2020 IEEE 9th International Power Electronics and Motion Control Conference

PB - IEEE

T2 - 9th IEEE International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia)

Y2 - 29 November 2020 through 2 December 2020

ER -

Wu W, Zhao Z, Blaabjerg F, Chung H. A Novel Method to Identify the "Trouble Maker" of Internal Instability in Multi-paralleled Inverters System. In Proceedings 2020 IEEE 9th International Power Electronics and Motion Control Conference: IPEMC2020-ECCE Asia. IEEE. 2020. p. 3335-3340. 9368188. (IEEE International Power Electronics and Motion Control Conference, IPEMC ECCE Asia). doi: 10.1109/IPEMC-ECCEAsia48364.2020.9368188

A Novel Method to Identify the "Trouble Maker" of Internal Instability in Multi-paralleled Inverters System

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