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High voltage AC and DC residual current discharge circuit with protection function

A technology of discharge circuit and protection function, applied in the field of aviation secondary power supply design, to achieve the effect of improving safety and reliability

Active Publication Date: 2020-12-18
SHAANXI AVIATION ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a high-voltage AC / DC residual current discharge circuit with protection function to solve at least one of the above-mentioned problems

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  • High voltage AC and DC residual current discharge circuit with protection function
  • High voltage AC and DC residual current discharge circuit with protection function

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Embodiment Construction

[0023] In order to make the purpose, technical solution and advantages of the application more clear, the technical solution in the embodiment of the application will be described in more detail below in conjunction with the drawings in the embodiment of the application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the figures are exemplary, and are intended to explain the present application, and should not be construed as limiting the present application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application. Embodiments of the present application will be described in detail below in conjunction with th...

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Abstract

This application discloses a high-voltage AC-DC residual power discharge circuit with protection function, which is connected to the internal chip power supply V of the product to be tested. DD connected, including: detection discrimination circuit for the V DD When it drops to a predetermined value, a protection circuit control signal, a DC discharge circuit control signal and an AC discharge circuit control signal are generated; the protection circuit is used to cut off the output of the DC-AC inverter circuit to protect the product; the DC discharge circuit It is used to discharge the high-voltage charge stored in the DC output energy storage element of the product's DC-DC booster circuit; the AC discharge circuit is used to discharge the energy stored in the product's DC-AC inverter circuit in parallel with the AC output To vent. The high-voltage AC / DC residual current discharge circuit with protection function of the present application can protect the product while performing residual current discharge when part of the fault occurs; and, the DC / DC booster part and the DC / AC inverter part The remaining electricity can be discharged at the same time to improve the safety and reliability of the product.

Description

technical field [0001] The application belongs to the technical field of aviation secondary power supply design, and in particular relates to a high-voltage AC / DC residual current discharge circuit with a protection function. Background technique [0002] Aviation static converters and power supplies usually adopt a two-stage cascaded topology of DC / DC boost and DC / AC inverter, and each stage circuit contains a large-capacity energy storage capacitor. When the power supply of the product is cut off, interrupted or fails, it is necessary to discharge the remaining power in the energy storage capacitor circuit to ensure the normal power-on sequence of the product, thereby improving the safety and reliability of the product. [0003] There are at least the following problems in the traditional bleeder circuit: 1) The bleeder resistor is directly connected in parallel on both sides of the energy storage capacitor. The resistor consumes power consumption during the working proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M1/32
CPCH02M1/32H02M1/322
Inventor 杨晓罗晓春刘靖荣朱红闫亚娟
Owner SHAANXI AVIATION ELECTRICAL