Aviation high-voltage high-power three-phase full-control rectifying device based on silicon carbide

Abstract

The invention discloses an aviation high-voltage high-power three-phase full-control rectifying device based on silicon carbide. Master control system, three-phase alternating current filter circuit,pFC inductance circuit, the invention discloses a three-phase full-bridge silicon carbide power circuit. The system comprises an AC line voltage sampling conditioning circuit, an AC phase current sampling conditioning circuit, an SIC drive circuit, a DC filter circuit, a DC voltage collection circuit, a first isolation power supply, a second isolation power supply, a level conversion module, a communication module, a temperature collection circuit, a DC bus filtering shaping module and a DC bus voltage collection circuit. The technical problems that an existing product cannot continuously workat high temperature, losses are large, efficiency is low, the size and weight are large, and reliability is not high are solved.

Description

technical field [0001] The invention belongs to the technical field of aviation secondary power supply and active power factor correction (APFC), and relates to an aviation high-voltage high-power three-phase fully-controlled rectifier based on silicon carbide. Background technique [0002] At present, rectification devices, power factor correction products, switching power supplies, frequency converters, motor drive controls, etc., which are widely used in industry and aviation fields, all use traditional semiconductor Si-based devices for power conversion. Commonly used silicon MOSFETs and IGBT products, although very The electrification level of products has been greatly improved, but there are still some unsolvable problems in the use of Si-based semiconductor products. Typical questions are as follows: [0003] 1. Si material cannot work at a higher temperature, which limits the application of the product. [0004] 2. Si material has low breakdown field strength and l...

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Problems solved by technology

[0008] The purpose of the present invention is to propose an aviation high-voltage high-power three-phase fully-controlled rectifier based on silicon carbide to solve the technical problems that the current products cannot continue to work at high temperatures, have large losses, low efficiency, large volume and weight, and low reliability.

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