Photovoltaic system tracking and backtracking method

Abstract

The invention provides a photovoltaic system tracking and backtracking method which comprises the following steps: a) fixedly arranging at least two photovoltaic assemblies; b) obtaining local time and latitude of a direct solar ray point, and obtaining the solar altitude angle; c) obtaining inclined plane length of each photovoltaic assembly, distance between the geometric center of the photovoltaic assembly and the horizontal plane and inclination angle, and obtaining an inclination distance of the photovoltaic assembly extending from the inclined plane top end to the horizontal plane along the bottom end direction; d) obtaining a virtual distance between an image point and a contact point of the inclination distance and the horizontal plane according to the solar altitude angle, the inclination angle and the inclination distance; e) comparing the distance between the geometric centers of the two adjacent photovoltaic assemblies and the virtual distance; and f) carrying out judgment according to the comparison data, and controlling the position relation between the photovoltaic assemblies and the solar rays through a tracker. Through the method, the solar altitude angle can be monitored, and the inclination angle of the photovoltaic assemblies is adjusted, thereby effectively preventing the adjacent photovoltaic assemblies from generating shadow in between, improving generating capacity and enlarging application range.

Description

technical field [0001] The invention relates to the application field of photovoltaic cells, in particular to a method for photovoltaic tracking and inverse tracking. Background technique [0002] With the development of society and science and technology, the production technology of solar photovoltaic cells has been continuously improved, and has been widely used in various fields. Solar photovoltaic cells (referred to as photovoltaic cells) are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect. [0003] The electric energy generated by the battery mainly depends on the photon energy incident on the battery, but the current photovoltaic power generation products still have the problem of low power generation efficiency. The reason is that the current photovoltaic cells are generally planar, and the use of reflected light rare. [0004] If the array spacing is increased, although more power generatio...

AI Technical Summary

Problems solved by technology

If the spacing between photovoltaic arrays is designed according to 6 hours, shadows will appear between the arrays very early, resulting in power loss of the system

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