Non-contact type high-voltage and large-current direct-current module

Abstract

The invention discloses a non-contact type high-voltage and large-current direct-current module. The module comprises a 24V power supply input channel and a 0V control signal channel. The power supplyinput channel and a signal limiting control channel are jointly connected with an isolating switch power supply for converting a 24V voltage into a 15V voltage; the output end of the isolation switchpower supply is connected with the positive electrode of a photoelectric conversion module; the negative electrode of the photoelectric conversion module is connected with the control signal channel;a control optical signal is input into the input end of the photoelectric conversion module; the output end of the photoelectric conversion module is connected with an electro-optical conversion module and an IGBT driving circuit; the electro-optical conversion module is connected with the control signal channel; and a feedback optical signal is output from the output end of the electro-optical conversion module. According to the invention, the requirements of the high voltage, the large current, the high frequency, the high temperature and the high switching speed are met.

Description

technical field [0001] The invention relates to the technical field of DC modules, in particular to a non-contact high-voltage, high-current DC module. Background technique [0002] With the rapid development of new energy vehicles, energy storage systems, flexible power transmission, DC power transmission and distribution, and photovoltaic inverters, the demand for high-voltage, high-current DC switches has shown explosive growth, and at this stage DC switches can be divided into There are three types: DC contactor, DC relay, and DC isolating switch. Their common feature is that they are all mechanical contact switches, which are limited by the arcing when the contacts are separated and closed and the large contact resistance of the contacts. It is difficult to achieve high voltage and high current, which greatly limits the development of the above fields in the direction of high voltage and high current. Therefore, the field of power electronics urgently needs high voltage...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of new energy vehicles, energy storage systems, flexible power transmission, DC power transmission and distribution, and photovoltaic inverters, the demand for high-voltage, high-current DC switches has shown explosive growth, and at this stage DC switches can be divided into There are three types: DC contactor, DC relay, and DC isolating switch. Their common feature is that they are all mechanical contact switches, which are limited by the arcing when the contacts are separated and closed and the large contact resistance of the contacts. It is difficult to achieve high voltage and high current, which greatly limits the development of the above fields in the direction of high voltage and high current. Therefore, the power electronics field urgently needs high voltage and high current DC modules to meet the use requirements

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