Manual control device for solar automatic tracking system

Abstract

A manual control device of a sun automatic tracking system comprises a timer circuit (1), a manual direction control circuit (2), an auto-manual signal commutation circuit (3), a stepper motor actuator (4), a stepper motor (5) and a driving mechanism (6). The timer circuit (1) generates a pulse control signal of the stepper motor; the direction is selected by the manual direction control circuit (2); the stepper motor actuator (4) provides a driving electric current for the stepper motor (5) according to a received manual control signal and controls the stepper motor (5) to rotate; a rotatingshaft of the stepper motor (5) is connected with a speed transforming gear in the driving mechanism (6); the speed transforming gear rotates to drag the driving mechanism to turn, and finally drives a solar photovoltaic array to rotate. When the automatic control function of the automatic tracking system fails, the attitude adjustment can be carried out on the tracking system, or the solar photovoltaic array is flexibly turned in the course of installation and debugging to cause that the solar photovoltaic array reaches an appointed position.

Description

technical field [0001] The invention relates to an automatic sun tracking system, in particular to a manual control device for an automatic sun tracking system. Background technique [0002] With the increasingly prominent energy and environmental issues, the development and utilization of renewable energy has gradually attracted the attention of the world. Solar energy has become a fast-growing renewable energy due to its cleanness, wide distribution range, and convenient utilization. Solar photovoltaic power generation is one of the main forms of solar energy utilization, but due to the high price of solar panels, the cost of photovoltaic power generation remains high, thus restricting the development of solar photovoltaic power generation industry. Therefore, how to improve the utilization efficiency of solar energy and reduce the cost of solar energy utilization has become a hot spot of people's research at present. Tracking the sun, ensuring that the incident light fr...

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Problems solved by technology

[0004] Chinese patent 200510034899.X "Sunlight Tracking System" and 02222766.0 "Micropower Timing Sun Tracking Device" propose an automatic sun tracking system, which mainly focuses on the realization of automatic functions and does not consider manual control functions

Although the Chinese patent 88221402.0 "clock-type sun tracking device" has a manual control function, its manual function is realized by a purely mechanical method, which requires manual rotation of the tracking mechanism, which is laborious and time-consuming, especially for large-capacity sun tracking system, often requires a large torque to make it rotate, and this manual method is clumsy and lacks practicality

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