Abstract
Energy crisis promotes the development of renewable energy, especially the solar energy. Sun tracking system proposed in this paper is such a device for efficiency improvement. This closed loop tracking system with two axis sun tracking method is controlled by a programmable logic controller (PLC) and is used for a large dish solar collector. A combination tracking mode combined active and passive tracking methods used in the design make the tracker efficient whatever the circumstances. Two stepper motors and two reduction boxes move the device towards the sun with chain transmission. Besides sun tracking, the system also has functions of overheat monitoring, wind speed monitoring and measurement of illumination.
Highlights
International energy structure adjustment and the energy crisis promote the development of renewable energy
Sun tracking system proposed in this paper is such a device for efficiency improvement
This closed loop tracking system with two axis sun tracking method is controlled by a programmable logic controller (PLC) and is used for a large dish solar collector
Summary
International energy structure adjustment and the energy crisis promote the development of renewable energy. In 2035, power generation of renewable energy will account for about one-third of electricity output, and the solar energy will be the fastest one among it. The dish solar thermal power generation usually uses a two axis sun tracker having high tracking accuracy and thermoelectric conversion efficiency. Two stepper motors and two reduction boxes are used to control the rotation of the collector with chain transmission. The goal in this system is to achieve a tracking precision within 0.1°. In this case, the light energy loss would be negligible
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