Digital large-power high-frequency inversion controller for direct-current power supply and method of controller

Abstract

The invention discloses a digital large-power high-frequency inversion controller for a direct-current power supply and a method of the controller. The controller comprises a current measurement circuit, a voltage measurement circuit, a power given circuit, an over-current protection circuit, an overheating protection circuit, a phase loss protection circuit, a keyboard circuit, a micro-processor, a displayer, a complex programmable logic device (CPLD), a first drive circuit, a second drive circuit, a third drive circuit, a fourth drive circuit, a fifth drive circuit, a sixth drive circuit, a digital / analog (D / A)conversion circuit, a switching signal output circuit and a power supply circuit. According to the digital large-power high-frequency inversion controller for the direct-current power supply and the method of the controller, an electronic design automation (EDA) technique is used to be combined with the micro-processer control and the CPLD, and the micro-processor is used to control the CPLD to produce square-wave signals with adjustable duty ratios and frequencies, so that the power supply output power changes according to requirements, and the output power level is controlled by the micro-processor control, accordingly, a low-voltage, large-current and direct-current power supply is obtained through rectification. Output energy of the power supply can supply heat for a mono-crystal furnace graphite heater, the temperature control accuracy is high, and strict temperature requirements of mono-crystals in growth stages can be met.

Description

technical field [0001] The invention relates to a high-power high-frequency inverter rectifier and its method capable of generating low voltage and high current, and the output voltage or current can be adjusted, and is used for electroplating, oxidation, electrolysis, electrophoresis, smelting, quartz heating and refining Electrochemical treatments such as silicon provide efficient and stable DC power. Background technique [0002] With the rapid development of the electronics industry, more fields based on electronic technology have begun to increase the demand for monocrystalline silicon. As the main equipment for providing heat source in the process of single crystal growth, the high-power monocrystalline silicon DC heating power supply has been more widely used, but at the same time, it also puts forward the real-time performance, intelligence and reliability of the single crystal silicon heating power supply. higher requirement. The traditional high-power monocrystal...

AI Technical Summary

Problems solved by technology

The traditional high-power monocrystalline silicon DC heating power supply mainly uses transformers and thyristors to step down, and then rectifies to obtain low-voltage and high-current power supplies. Traditional thyristor power supplies have low efficiency, low power factor, large output voltage ripple, Poor stability and other issues

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