Solar photovoltaic tracking system angle position feedback module

Abstract

The invention discloses an angular position feedback module of a sun photovoltaic tracking system. The angular position feedback module is composed of a shell (1), a rotary encoder (2), a coded disc installation rack (3), a module base (4), a connecting rod (5), a limiting switch (6), a sliding block, a central shaft combination (8) and a flexible coupling (9). The shell (1) covers the module base (4), the rotary encoder (2), the coded disc installation rack (3), the limiting switch (6), the sliding block (7), the upper half part of the central shaft combination (8) and the flexible coupling (9) are sealed in a seal cavity consisting of the shell (1) and the module base (4). By integrating two functions of angular size feedback and extreme position alarming, the angular position feedback module provided by the invention has high integral protection level in comparison with the way of using independent components; meanwhile, the protection design for a sensor is added, a limiting angleis convenient for adjusting, the transport and installation are convenient; therefore, the angular position feedback is more stable and reliable.

Description

technical field [0001] The invention relates to an automatic sun tracking system, in particular to a photovoltaic tracking angle position feedback mechanism. Background technique [0002] With the vigorous development of solar photovoltaic power generation industry in our country, solar photovoltaic tracking system, as the main component of solar photovoltaic power generation system, has gradually become a hot spot in the field of solar photovoltaic power generation research. [0003] The solar photovoltaic tracking system can adjust its attitude accordingly according to the change of the sun position. It reduces the incident angle of sunlight on the solar photovoltaic array through the adjustment of its own attitude, thereby improving the power generation effect of solar cells and reducing the cost of system power generation. Solar photovoltaic The tracking system is generally composed of a tracking controller, an electric drive actuator, a photovoltaic support, and a posit...

AI Technical Summary

Problems solved by technology

In the existing technical solutions, the rotary encoder and the limit switch used for the angle feedback mechanism of the solar photovoltaic tracking system are applied independently, so the installation and protection of the rotary encoder and the limit switch need to be considered separately, due to their The application occasions are mostly desert outdoor conditions, so it is necessary to choose products with a higher protection level. Even so, the rotary encoder and limit switch often fail due to the harsh outdoor rain, snow, sand and dust weather; the rotary encoder is an important feedback Parts are more easily damaged during on-site installation. For example, if the output shaft is radially stressed when it is rotated, its internal grating is more likely to be broken

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