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Journal of Applied Mathematics
Volume 2014 (2014), Article ID 512058, 7 pages
Research Article

Research on a New Control Scheme of Photovoltaic Grid Power Generation System

School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China

Received 24 January 2014; Accepted 10 July 2014; Published 10 August 2014

Academic Editor: Gongnan Xie

Copyright © 2014 Dong-Hui Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A new type of photovoltaic grid power generation system control scheme to solve the problems of the conventional photovoltaic grid power generation systems is presented. To aim at the oscillation and misjudgment of traditional perturbation observation method, an improved perturbation observation method comparing to the next moment power is proposed, combining with BOOST step-up circuit to realize the maximum power tracking. To counter the harmonic pollution problem in photovoltaic grid power generation system, the deadbeat control scheme in fundamental wave synchronous frequency rotating coordinate system of power grid is presented. A parameter optimization scheme based on positive feedback of active frequency shift island detection to solve the problems like the nondetection zone due to the import of disturbance in traditional island detection method is proposed. Finally, the results in simulation environment by MATLAB/Simulink simulation and experiment environment verify the validity and superiority of the proposed scheme.