Research on control strategy based on multi-mode switching of photovoltaic grid connected inverter

DOI

10.2991/eeeis-16.2017.42How to use a DOI?

Keywords

PV grid connected inverter; Operation mode; Switching mode; Control mode.

Abstract

Aim at making the grid connected inverter controlled in a targeted manner; a control strategy based on multi-mode switching is presented in this paper. Combined with operation status of PV grid connected system, the operation of grid connected inverter can be divided into the following four kinds of operation mode, namely maximum P mode, f-P mode, V-Q mode and P-Q power mode, meanwhile, the partition condition of the model is given. Based on the four operation modes of grid connected inverter, the four control modes of inverter are defined. In the control strategy, the control idea of the operation mode inner and among the several operation models is given respectively. According to the two stage structures of single phase full-bridge inverter, application characteristics of various models are analyzed in detail, and the corresponding control strategy of grid connected inverter is given. For problem of PV grid connected system that exits in the process of operation mode switching, the corresponding control link is regarded as the feed-forward before switching mode to change the droop coefficient, achieve the smooth switching among models and eliminate the impulse caused by system. MATLAB simulation result shows the correctness of model control and effectiveness of mode switching control.

Copyright

© 2017, 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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TY  - CONF
AU  - Zhong-Lin Zhang
AU  - Tao Wang
AU  - Hong Bai
AU  - Bao-Guo Li
AU  - Tao Cong
AU  - Xi Li
PY  - 2016/12
DA  - 2016/12
TI  - Research on control strategy based on multi-mode switching of photovoltaic grid connected inverter
BT  - Proceedings of the 2nd Annual International Conference on Electronics, Electrical Engineering and Information Science (EEEIS 2016)
PB  - Atlantis Press
SP  - 323
EP  - 328
SN  - 2352-5401
UR  - https://doi.org/10.2991/eeeis-16.2017.42
DO  - 10.2991/eeeis-16.2017.42
ID  - Zhang2016/12
ER  -