Model Development and Simulation Analysis of Three-Phase Grid-Connected Photovoltaic Systems

• Main Authors: Chu-Chun Yao, 姚竺君
• Other Authors: Chih-Wen Liu
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/74533927777114356676

碩士 === 國立臺灣大學 === 電機工程學研究所 === 98 === A mathematical model simulating control strategy for three-phase grid-connected photovoltaic systems is presented in this research. This research proposes the perturbation and observation method of maximum power point tracking control for a photovoltaic array. The photovoltaic power converter includes a boost converter and a three-phase voltage source inverter. The boost converter applies the method of constant current control, and the three-phase voltage source inverter utilizes the current control method. The control mechanism maximizes a photovoltaic array power output and stabilizes the DC-link voltage of a three-phase voltage source inverter, then exports three-phase current to a Utility Power Grid. The results of mathematical model developed by this research are examined and validated. Finally, the effectiveness of control strategy related to three-phase grid-connected photovoltaic system is demonstrated by using MATLAB/Simulink.