Proceedings of the 2015 2nd International Workshop on Materials Engineering and Computer Sciences

A Proportional + Multi-Resonant Current Controller for Grid-connected Inverters under Unbalanced Grid Voltage

Authors
Jiajin Pan, Yancheng Liu, Qinjin Zhang, Ning Wang
Corresponding Author
Jiajin Pan
Available Online October 2015.
DOI
10.2991/iwmecs-15.2015.104How to use a DOI?
Keywords
grid voltage unbalance and distortion; proportion multi-resonant (PMR); second order generalized integrator (SOGI); zero current error control
Abstract

The traditional grid-connected inverter (GCI) has the disadvantage of high total harmonic distortion under the condition of unbalanced and distorted grid voltage. On this basis, a novel GCI control strategy is proposed in this paper. Firstly, a second order generalized integrator is built in the coordinate to realize the grid voltage phase shift 90° and separate the positive-and negative -sequence. Then, the grid current reference command of the GCI is derived. Secondly, a proportional + multi-resonant (PMR) controller, which does not need positive-and negative - sequence separation of the grid current, is employed to achieve zero current error control and improve the grid current power quality. Finally, simulation results demonstrate the effectiveness of the proposed scheme under the condition of unbalanced and distorted grid voltage.

Copyright
© 2015, 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/).

Download article (PDF)

Volume Title
Proceedings of the 2015 2nd International Workshop on Materials Engineering and Computer Sciences
Series
Advances in Computer Science Research
Publication Date
October 2015
ISBN
978-94-6252-114-8
ISSN
2352-538X
DOI
10.2991/iwmecs-15.2015.104How to use a DOI?
Copyright
© 2015, 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  - Jiajin Pan
AU  - Yancheng Liu
AU  - Qinjin Zhang
AU  - Ning Wang
PY  - 2015/10
DA  - 2015/10
TI  - A Proportional + Multi-Resonant Current Controller for Grid-connected Inverters under Unbalanced Grid Voltage
BT  - Proceedings of the 2015 2nd International Workshop on Materials Engineering and Computer Sciences
PB  - Atlantis Press
SP  - 523
EP  - 528
SN  - 2352-538X
UR  - https://doi.org/10.2991/iwmecs-15.2015.104
DO  - 10.2991/iwmecs-15.2015.104
ID  - Pan2015/10
ER  -