Windward leveling device for solar oblique single-shaft tracker

Abstract

The invention discloses a windward leveling device for a solar oblique single-shaft tracker. The device comprises a reducing motor, a rotating shaft, a first coder, a bracket, a wind vane, a second coder, a wind speed sensor, a read-write module and a controller, wherein the rotating shaft is fixed on the bracket; one end of the rotating shaft is connected with the reducing motor, and rotates under the driving action of the reducing motor by taking the rotating shaft as a shaft; an inner shaft of the first coder is fixedly connected with the rotating shaft, and an outer shaft of the first coder is connected with the bracket; a main rod of the wind vane is fixedly connected with the other end of the rotating shaft; the rotating shaft is connected with the inner shaft of the second coder; an outer shaft of the second coder is connected with the bracket; the read-write module is used for transmitting the position values of the first coder and the second coder and a wind speed signal of the wind speed sensor to the controller, and drives the reducing motor to run under the control of the controller. By the device, the tracker can be controlled to be automatically leveled when a wind speed is greater than a set value, and a solar azimuth angle can be normally tracked when the wind speed is smaller than a designed wind speed value, so that safety of the tracker is ensured.

Description

technical field [0001] The invention relates to a tracking control device used in the field of solar photovoltaic power generation, in particular, the invention relates to a flattening device of a solar oblique single-axis tracker along the wind direction. Background technique [0002] Solar photovoltaic power generation is one of the main forms of utilizing solar energy. Tracking the sun to ensure that the sunlight is vertically irradiated on the solar panel can effectively improve the utilization rate of the sun, thereby improving the power generation efficiency of the system. If the local direct solar component exceeds 70%, the gain in power generation may exceed 40%. In the solar photovoltaic power generation system, there is little room for improving the efficiency of components, inverters, transformers, controllers and other equipment. After research, a reasonable design of the solar photovoltaic tracking system support can improve the efficiency of the solar photovo...

AI Technical Summary

Problems solved by technology

The fixed solar support system has a simple structure and high reliability, but because the inclination angle of the components cannot be adjusted, the annual power generation efficiency is low; the tracking support system can basically be divided into two types: single-axis tracking system and dual-axis tracking system. The annual power generation efficiency of the dual-axis tracking system is the highest, the cost is relatively high, the structure is relatively complex, and the technical requirements are high. The annual power generation efficiency of the single-axis tracking system is higher, and the cost is lower than that of the dual-axis tracking system

[0004] Due to the poor wind resistance of the inclined single-axis tracking system, the inclined single-axis tracking support is rarely used in actual photovoltaic power generation projects. This defect is caused by the structure of the support itself, and the larger the unit capacity, the more obvious this defect

Since large-scale power stations are generally located in northwest or desert areas, the wind speed is relatively high, and it is easy to cause damage to the oblique single-axis tracking system

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