Rectification system based on GaN power device

Abstract

The invention discloses a rectification system based on a GaN power device. The rectification system comprises an APFC module, an inversion module, a magnetic integration module, a rectification module, a voltage closed-loop module and a control module. The input end of the APFC module is connected with mains supply, and is used for converting mains supply voltage into low-ripple 400V direct current; the input end of the inversion module is electrically connected with the output end of the APFC module, and the inversion module is used for converting the direct current 400V output by the APFC module into alternating current 400V; the input end of the magnetic integration module is electrically connected with the output end of the inversion module, and the magnetic integration module is usedfor converting alternating current 400V into alternating current 48V; the input end of the rectification module is electrically connected with the output end of the magnetic integration module, and the rectification module is used for converting alternating current 48V into direct current 48V; and the voltage closed-loop module is electrically connected with the output end of the rectification module, and is used for stabilizing the output voltage of the system to be direct current 48V, so that the development trend of high efficiency, high frequency and miniaturization of the converter is met, and the system is better applied to a big data center server, a direct current motor and a communication power supply.

Description

technical field [0001] The invention relates to the application field of power semiconductor devices, in particular to a rectification system based on GaN power devices. Background technique [0002] The rectifier converter is an integral part of the power electronic converter, and it is widely used in AC and DC systems, aviation power systems, etc. At present, the rectifier converter is developing towards the direction of high efficiency, high power density, small size and light weight. As the switching frequency increases, the losses of power devices also increase. [0003] The high-frequency miniaturization and high-efficiency of today's rectifier converters have always been a difficulty for engineers. Miniaturization must correspond to high-frequency. However, most of the existing converters use Si devices that can withstand a relatively limited frequency, so ordinary Si devices are limited. The development of high-frequency miniaturization of rectifier converters and ...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a rectification system based on GaN power devices, which is used to solve the problems of low frequency, low efficiency, large weight and low power density of other current rectification systems

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