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Active sun tracker

An active tracking and solar technology, applied in the direction of instruments, non-electric variable control, generator/motor, etc., can solve the problems of unfavorable popularization, poor practicability, poor adaptability, etc., and achieve the optimization of power generation efficiency, simple structure, and strong structure durable effect

Inactive Publication Date: 2010-11-10
UNIV OF SHANGHAI FOR SCI & TECH
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AI Technical Summary

Problems solved by technology

Due to the photoelectric sensor's dependence on light, it has poor adaptability to the environment. In cloudy and rainy days, as well as the influence of external strong light, such as car lights, lightning, etc., it is easy to cause misoperation and poor practicability, which is not conducive to popularization and use.

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Embodiment Construction

[0025] The specific implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples, but the protection scope of the present invention should not be limited thereby.

[0026] The invention proposes an active sun tracking device, which includes a base, a central controller, a servo driver, an azimuth mechanical rotation unit, an altitude mechanical rotation unit, a solar cell module, and an external sensor module. The solar battery module includes: solar panels, battery panel brackets, inverters, batteries, etc. The batteries provide electrical energy for the entire system. Since the system uses intermittent operation, the energy consumption is low.

[0027] The central controller includes a PLC (programmable logic controller), a contactor, a breaker, a thermal circuit breaker, and a control button. According to the theory in Chapter 24 of "Astronomical Algorithms", when the calculation accuracy...

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Abstract

The invention discloses an active sun tracker, which comprises a base, a central controller, a servo driver, a mechanical rotary unit of azimuth angles, a mechanical rotary unit of altitude angles, a solar battery module and an external sensor module, wherein the central controller comprises a PLC (Programmable Logic Controller), the PLC converts the computed change of the azimuth angle and the altitude angle of the sun into output pulses, and the output pulses are respectively sent to a rotary stepping motor driver of azimuth angles and an encoder and a counter of a brushless DC motor of altitude angles; and the servo driver comprises the stepping motor driver, the encoder and the counter, wherein the encoder and the counter are used for controlling the brushless DC motor to close the position loop. The sun tracker of the invention can realize the purpose of tracking sunrays in real time with high precision and low energy consumption under various climatic and optical environments.

Description

technical field [0001] The invention relates to the field of solar photovoltaic power generation systems, in particular to an active sun tracker capable of automatically and accurately tracking the sun's azimuth through geographical location information and local time values. Background technique [0002] With the continuous growth of human demand for energy and the rapid depletion of traditional energy sources, solar energy is the most ideal alternative energy source for human beings in the future. Scientists agree that solar energy is the most ideal alternative energy source for future human beings. At present, the conversion rate of solar energy utilization is about 10%-20%. Theoretical analysis shows that the energy receiving rate differs by 37.7% between tracking the sun and non-tracking. The design of intelligent solar tracking device is an important way to solve the low utilization rate of solar energy. The study of precise sun tracking devices can greatly increase t...

Claims

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Application Information

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IPC IPC(8): G05D3/00G05B19/05H02N6/00H02S20/32
CPCY02E10/50
Inventor 王双园白国振熊友曹鹏坤付翔王京京
Owner UNIV OF SHANGHAI FOR SCI & TECH
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