Photovoltaic Grid-Connected Micro-Inverter Based on Self-Tuning Fuzzy-PI Controller

Abstract:

This paper introduces a kind of grid-connected micro-inverter system. Photovoltaic micro-inverter system is a highly nonlinear and time-varying system. Compared to traditional linear control strategy, Fuzzy Controller has better robustness and stability in the changing or non-linear application. Matlab simulation model for current tracking PV Grid-connected Micro-inverter was completed based on the Fuzzy self-tuning PI controller and the control strategy was tested on the micro-inverter prototype. The resu1ts show that this control strategy can effectively reduce the tracking error of the net current, and improve the system’s dynamic response.

• Periodical: Advanced Materials Research (Volumes 986-987)
• Pages: 1098-1102
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.986-987.1098
• Online since: July 2014
• Authors: Chang Liang Liu*, Hui Chao Zhang
• Keywords: Fuzzy Control, Micro-Inverter, PV Grid, Self-Tuning PID Control

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