Temperature regulating device for photovoltaic polycrystalline silicon ingot casting furnace

Abstract

The invention relates to a temperature regulating device for a photovoltaic polycrystalline silicon ingot casting furnace, belonging to the technical field of automatic temperature control of the photovoltaic polycrystalline silicon ingot casting furnace. The device comprises a temperature control thermoelectric couple mounted on the photovoltaic polycrystalline silicon ingot casting furnace, and an optical pyrometer, a main controller, an analog quantity output module, a power controller and an alternating current power source which are arranged on the photovoltaic polycrystalline silicon ingot casting furnace, wherein the temperature output ends of the temperature control thermoelectric couple and the optical pyrometer are respectively connected with the input end of the main controller; the output end of the main controller is connected with the input end of the power controller via the analog quantity output module; the output end of the power controller is connected with a heater of the photovoltaic polycrystalline silicon ingot casting furnace; and the input end of the alternating current power source is connected with another input end of the power controller. The temperature is controlled by the optical pyrometer and the thermoelectric couple at the same time. The invention has the advantages of convenient operation, reliable temperature control, high precision and the like, and greatly improves the polycrystalline silicon casting quality.

Description

technical field [0001] The invention belongs to the technical field of automatic temperature control of a photovoltaic polysilicon ingot furnace, and relates to a temperature control device when a temperature control thermocouple of a photovoltaic polysilicon ingot furnace fails. Background technique [0002] Solar energy is the most important basic energy among various renewable energy sources. Biomass energy, wind energy, ocean energy, water energy, etc. all come from solar energy. Broadly speaking, solar energy includes the above-mentioned various renewable energy sources. As a kind of renewable energy, solar energy refers to the direct conversion and utilization of solar energy. Converting solar radiant energy into thermal energy through a conversion device belongs to solar thermal utilization technology, and then using thermal energy to generate electricity is called solar thermal power generation; converting solar radiant energy into electrical energy through a photoel...

AI Technical Summary

Problems solved by technology

This patent has no way to consider the difference in the running time of each polysilicon ingot furnace. It is difficult for the two furnaces to have the same running time and operating process, and the temperature control effect of the open-loop temperature control is not ideal.

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