Proceedings of the 2018 6th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2018)

Research on the Stability of Multi PV Inverters Connected to Weak Grid Based on Impedance Analysis

Authors
Qinghao Wang, Dewu Ye, Bo Liu, Yi Qu, Jing Liu, Yi Wang, Guobin Liu, Yuanlin Song, Hui Chen, Junping Quo
Corresponding Author
Qinghao Wang
Available Online June 2018.
DOI
10.2991/icmmct-18.2018.47How to use a DOI?
Keywords
PV inverter, equivalent impedance, phase locked loop design, power system stability
Abstract

In paralleled grid connected PV inverters system, when the design of the inverter control system is connected with the weak grid, the control performance will become poor, and even the operation is not stable. In this paper, a method of impedance analysis is presented, and the equivalent impedance of inverter is derived by using the small signal model of the inverter, which is used to analyze the stability of inverter parallel system. And this paper proposes that system can be stabilized by changing the phase locked loop design of the inverter. Simulation results verify the validity and feasibility of the theoretical analysis and the proposed method.

Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2018 6th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2018)
Series
Advances in Engineering Research
Publication Date
June 2018
ISBN
978-94-6252-531-3
ISSN
2352-5401
DOI
10.2991/icmmct-18.2018.47How to use a DOI?
Copyright
© 2018, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Qinghao Wang
AU  - Dewu Ye
AU  - Bo Liu
AU  - Yi Qu
AU  - Jing Liu
AU  - Yi Wang
AU  - Guobin Liu
AU  - Yuanlin Song
AU  - Hui Chen
AU  - Junping Quo
PY  - 2018/06
DA  - 2018/06
TI  - Research on the Stability of Multi PV Inverters Connected to Weak Grid Based on Impedance Analysis
BT  - Proceedings of the 2018 6th International Conference on Machinery, Materials and Computing Technology (ICMMCT 2018)
PB  - Atlantis Press
SP  - 234
EP  - 238
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmct-18.2018.47
DO  - 10.2991/icmmct-18.2018.47
ID  - Wang2018/06
ER  -