A silicon carbide device series drive protection circuit light energy supply device and its implementation method

Abstract

The invention discloses an optical energy supplying device for a driving protecting circuit in a silicon carbide series device and a realizing method thereof. The optical energy supplying device acquires energy through performing strong light irradiation on a photovoltaic battery by an artificial light source outside an insulating distance. The photovoltaic battery is connected with a photovoltaic converter. The photovoltaic converter with maximal power point tracking technology stores energy which is acquired from a battery board into an energy storage device. A battery energy storage unit supplies energy to a DC / DC switching mode power supply. The switching mode power supply supplies electric energy to the driving protecting circuit. The optical energy supplying device has advantages of excellently settling a high-voltage insulation problem in a traditional energy supply type circuit and a high-voltage-side starting voltage equalizing problem in an energy acquiring type circuit, effectively restraining common-mode interference, and effectively preventing power supply stoppage to the driving protecting circuit caused by sudden disappear of the light source.

Description

technical field [0001] The invention relates to an energy supply device and a realization method in the field of power electronics, in particular to an optical power supply device and a realization method of a silicon carbide device series drive protection circuit. Background technique [0002] In the traditional silicon device series technology, especially in the IGBT series technology, there are problems that the drive protection circuit is limited by the insulation of the traditional energy supply circuit, and the problem of starting voltage division of the traditional energy harvesting circuit is difficult to achieve reliable control of the UHV series circuit. [0003] With the rapid development of silicon carbide devices, the device's high-voltage withstand capability, current conduction capability, and switching speed are being dramatically improved. The performance improvement brings more and more severe challenges to the drive protection circuit, especially in the po...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a silicon carbide device series drive protection circuit light energy supply device and its realization method. Voltage problem, and effectively suppress the common mode interference, but also effectively prevent the power outage of the drive protection circuit caused by the sudden disappearance of the light source

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