Abstract
This study addresses a tracking mechanism and control algorithm for driving the panel of photovoltaic generation system, in order to enhance the efficiency of power generation. Firstly, we propose the optimal driving pattern for one-axis tracking mechanism, which improves the efficiency about 5%. Our analysis on the geometric relation between the panel and the sun reveals that the optimal driving pattern is "S" curve which is different from the constant angular velocity, and the optimal pattern depends on the season. Secondly, we propose a novel mechanism for avoiding the shade on the neighbor panels. The proposed mechanism adds the rotational motion and translational motion by simple mechanism. The proposed mechanisms reduce the space required for installation without degrading the efficiency, and reduce the amount of initial investment.
