A Back-Stepping Sliding Mode Control Strategy Based on Extended Observer for Photovoltaic Grid-Connected Inverter

DOI

10.2991/caai-17.2017.7How to use a DOI?

Keywords

grid-connected inverter system; LCL filter circuit; back-stepping sliding mode control; extended state observer

Abstract

In the photovoltaic power generation system, the grid-connected inverter is an important link to realize system connection with the electricity grid, but the existence of various interferences of the external environment and the system itself brings a series of problems. In this paper, the circuit of the LCL is used to filter of photovoltaic grid-connected inverter output, and step-sliding mode control and the extended state observer are combined to complete the tracking control of the inverter system. Three state variables of the control strategy are the output voltage of inverter system its first and second derivative, back-stepping and sliding mode control are combined, and the extended state observer is designed to estimate the composite interference, then its output compensates to the back-stepping sliding mode controller. The effectiveness of the control strategy is proved by the simulation of photovoltaic grid-connected inverter system in Matlab.

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/).

Download article (PDF)

TY  - CONF
AU  - Hui Ren
AU  - Jishen Li
AU  - Dan Li
AU  - Guodong You
AU  - Zhaojing Wang
PY  - 2017/06
DA  - 2017/06
TI  - A Back-Stepping Sliding Mode Control Strategy Based on Extended Observer for Photovoltaic Grid-Connected Inverter
BT  - Proceedings of the 2017 2nd International Conference on Control, Automation and Artificial Intelligence (CAAI 2017)
PB  - Atlantis Press
SP  - 32
EP  - 37
SN  - 1951-6851
UR  - https://doi.org/10.2991/caai-17.2017.7
DO  - 10.2991/caai-17.2017.7
ID  - Ren2017/06
ER  -