Solar ray angle measuring device of photovoltaic tracking system and measuring method of solar ray angle measuring device

Abstract

The invention discloses a solar ray angle measuring device of a photovoltaic tracking system and a measuring method of the solar ray angle measuring device, which belong to the metering field. The solar ray angle measuring device comprises a rotatable hollow cylinder mounted on a base, an axial rectangular groove and an oblique groove which are not intersected with each other and can transmit light are disposed on the cylinder, and a photovoltaic battery is mounted at the bottom of the inside of the cylinder and connected with a control circuit. The principle that short-circuit current of the photovoltaic battery is proportional to the area of a portion, which is irradiated by solar rays, of the battery is adopted under the condition of certain illumination intensity, accordingly a rotation angle of the cylinder is detected when the short-circuit of the photovoltaic battery is the maximum by means of controlling rotation of the cylinder via the control circuit, and angles of the solar rays are computed and are timely mastered. The solar ray angle measuring device and the measuring method have a great significance in analyzing solar light intensity of the ground and intensity of ultraviolet rays, and can be used for measuring the altitude angle and the azimuth angle of the solar rays.

Description

technical field [0001] The invention relates to a measuring device, in particular to a solar ray angle measuring device and method for a photovoltaic tracking system, and belongs to the field of metrology. Background technique [0002] In the prior art, the position of the sun is generally determined by determining the altitude and azimuth of the sun. For a certain location on the earth, the sun altitude refers to the angle between the incident direction of sunlight and the ground plane. Professionally speaking The solar altitude angle refers to the angle between the sun's rays at a certain place and the tangent line perpendicular to the center of the earth. The altitude angle of the sun is closely related to the intensity of sunlight on the ground. There is a big difference in the light intensity between morning and evening and noon, because of the difference in the sun's altitude angle. Under sunny conditions, the intensity of sunlight is proportional to the sine of the ...

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Problems solved by technology

However, the angle range measured by the above method is small

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