A 24-pair Rod Polysilicon Reduction Furnace Power Supply System

Abstract

The invention discloses a 24-pair silicon rod polysilicon reduction furnace power supply system. According to the present invention, 24 silicon rod pairs in the polysilicon reduction furnace are arranged to form a first outer ring, a second outer ring, a third outer ring, a first middle ring, a second middle ring and an inner ring; the power supply system comprises an operation power supply, a high voltage start power, a three-phase three-winding transformer, a first power cabinet, a second power cabinet, a third power cabinet, a switch cabinet and a control cabinet. With the 24-pair silicon rod polysilicon reduction furnace power supply system provided by the present invention, the occupation area is reduced; in addition, the silicon rod pairs in the multicrystalline silicon reduction furnace are arranged to form the outer rings, the middle rings and the inner ring, only the silicon rod pairs positioned on the outer rings are started through the high voltage start power, such that only the electrodes and the electric cables corresponding to the silicon rod pairs positioned on the outer rings need to be prepared from the materials with high insulation grade; compared to the 24-pair silicon rod polysilicon reduction furnace power supply system in the prior art, the cost for the electrodes and the electric cables can be reduced through the reduction furnace power supply system provided by the present invention.

Description

technical field [0001] The invention belongs to the technical field of polysilicon production, and in particular relates to a power supply system for a 24-pair polysilicon reduction furnace. Background technique [0002] Silicon material is the most important functional material in the semiconductor industry, electronic information industry and solar photovoltaic cell industry. Polycrystalline silicon is the only raw material for preparing monocrystalline silicon and the material for producing solar cells, and its demand is increasing day by day. In order to reduce energy consumption, polysilicon production enterprises have increasingly large-scaled the design and selection of polysilicon reduction furnaces, gradually developing from the original 3 to 12 pairs of rods to 24 pairs of rods and above. [0003] At present, for the power supply of 24 pairs of rod polysilicon reduction furnaces, two sets of power supply systems of 12 pairs of rod polysilicon reduction furnaces are...

AI Technical Summary

Problems solved by technology

[0004] The power supply system of the above 24 pairs of rod polysilicon reduction furnace occupies a large area, but the polysilicon production site is limited

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