Flexible differential/synchronous power driving system for solar sun tracing lens

Abstract

A flexible differential / synchronous power driving system of a solar energy heliostat comprises a control system and a power driving system; two to five driving gears of two bull gear transmission systems which horizontally rotate and longitudinally rotate are uniformly arranged around a heliostat rotating gear; all the driving gears are meshed with the heliostat rotating gear; the output end of the heliostat rotating gear is connected with a heliostat base; the diving gears transmit the operational parameters of the diving gears back to a programmable controller of the control system through a torque and a rotating speed sensor; and a computer transmits a signal to the programmable controller through processing a transmitted signal of the programmable controller, so as to control the working state of a driving gear servo motor. The invention increases the driving capacity of the driving gears by adopting a proposal of the driving of a plurality of driving gears, instead of the prior proposal of the driving of one gear, and particularly ensures that the driving capacity is stable and the driving effect is enhanced under the unfavorable natural condition and during the heliostat longitudinal rotating process.

Description

Technical field [0001] The invention relates to a power drive system, in particular to a flexible differential / synchronous power drive system suitable for the rotation of solar heliostats. Background technique [0002] Mankind has a long history of using solar energy. As early as the Warring States Period more than 2,000 years ago, my country knew of using steel four-sided mirrors to focus sunlight for ignition; using solar energy to dry agricultural and sideline products. In modern times, the use of solar energy has become increasingly widespread, including the use of solar heat, photoelectric use of solar energy, and photochemical use of solar energy. There are two ways to use solar energy: passive utilization (photothermal conversion) and photoelectric conversion. Solar power generation is an emerging way of using renewable energy. [0003] Heliostat is an important device in solar power generation. It collects sunlight at one point, and then uses the collected light to genera...

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Problems solved by technology

[0006] In addition, since the heliostat rotates with the rotation of the sun relative to the earth, driven by a high-precision driving gear, the heliostat needs to perform both horizontal rotation and pitch rotation, and the rotation speed is very slow , therefore, the precision control of the heliostat rotation needs to be very precise

When the heliostat rotates from pitch to pitch, only one driving gear is used to drive it under the action of gravity of the heliostat, which will make the driving control of the driving gear particularly difficult, increase energy consumption, and increase the wear of the driving gear Big

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