Main-standby power-type uninterruptible power supply system based on SiC bilateral switches

Abstract

The invention relates to a main-standby power-type uninterruptible power supply system based on SiC bilateral switches, comprising a main power supply, a backup power supply, a first SiC bilateral switch, a second SiC bilateral switch, a control circuit, a main power voltage-current detection circuit, a backup power voltage-current detection circuit, a driving circuit and a human-machine interface, wherein the main power supply is connected with the main power voltage-current detection circuit and the backup power voltage-current detection circuit, the main power voltage-current detection circuit is connected with the control circuit, the control circuit is connected with the driving circuit, the driving circuit is connected with the first and second SiC bilateral switches, the backup power supply is connected with the backup power voltage-current detection circuit and the second SiC bilateral switch, and the backup power voltage-current detection circuit is connected with the controlcircuit.

Description

Technical field [0001] The present invention relates to the technical field of uninterrupted power supply, and more specifically, to an uninterrupted power supply system of a main and standby power supply based on a SiC bidirectional switch. Background technique [0002] With the development of the economy, the widespread application of high-tech equipment, and the continuous acceleration of the marketization process of the power industry, users have continuously improved the reliability of power supply, especially for the interruption of power supply that may cause major economic losses, serious environmental pollution, The primary load that causes major political influence and social disorder requires uninterrupted power supply. The early manual switching method is dangerous and the switching time is long, causing short-term power supply interruption; traditional uninterrupted power supply systems are mostly developed on the basis of thyristors, and when the power supply is abn...

AI Technical Summary

Problems solved by technology

The early manual switching method is dangerous and takes a long time to switch, causing short-term power interruption; most of the traditional uninterruptible power supply systems are developed on the basis of silicon controlled rectifiers. When the power supply is abnormal, the switching time of the main and standby is long; The peak voltage and surge current are generated on the electric load, and its performance is difficult to meet the user's continuously improving requirements for power supply reliability

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