Cup-type distribution photovoltaic power generation self-tracking system and control method

Abstract

The present invention discloses a cup-type distribution photovoltaic power generation self-tracking system and a control method. The system comprises a cup-type structure and a control unit. The cup-type structure comprises a first stepping motor arranged on a base. The first stepping motor drives an upper cylinder to rotate. A second stepping motor is arranged in the upper cylinder. Through a conical-tooth rotating mechanism, a solar panel is driven by the second stepping motor to conduct the pitching movement via a support rod. The four edges of the solar panel are provided with photosensitive transistors. The control unit comprises a CPU. The photosensitive transistors are connected with the CPU. The differential analysis and calculation is conducted on the switching values of the four photosensitive transistors by the CPU. The CPU respectively controls the first stepping motor and the second stepping motor via a motor driver, namely drives an azimuth-angle stepping motor and an elevating-angle stepping motor to drive a mechanical mechanism to rotate. In this way, the solar panel is enabled to track the sunlight in an orientation highest in illumination intensity all the time. The electric energy generated by the solar panel is delivered to a battery via a battery converter, and then the electric energy is used for powering up the control unit, the stepping motors and external loads by the battery. According to the technical scheme of the invention, the power generation efficiency of solar photovoltaic panels is effectively improved.

Description

【Technical field】 [0001] The invention relates to a solar tracking system, in particular to a cup-shaped distributed photovoltaic power generation self-tracking system and a control method. 【Background technique】 [0002] The design of solar tracking system is one of the hot research issues at home and abroad. At present, the research types of solar self-tracking systems at home and abroad are mainly divided into the following categories. [0003] According to the number of rotating shafts contained in the rotating grading part, the tracking technology is usually divided into the following two types: [0004] (1) Single-axis tracking: The azimuth or altitude signal of the sun output from the control unit is processed by the rotating adjustment unit to control the azimuth or altitude of the light collector. Compared with dual-axis tracking, single-axis tracking has a simpler structure and lower manufacturing cost, but manual adjustment is required for changes in the sun's a...

AI Technical Summary

Problems solved by technology

The advantage of passive tracking is that it can eliminate errors through feedback, but it works unstable in weather with more clouds, and good procedures are needed to prevent tracking confusion

[0009] (3) Hybrid tracking system: Hybrid tracking is a tracking method that combines active tracking and passive tracking. It has high tracking accuracy and good stability, but the actual operation is complicated and the cost is high

[0010] At present, the self-tracking systems for photovoltaic power generation on the market are bulky, complicated to install, and poorly connected

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