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Electrical protection using semiconductor switches

A semiconductor and switch technology, which is applied in the field of protecting aircraft circuits, can solve problems such as overcurrent for several milliseconds, and achieve the effects of reducing cross-sectional area, weight and volume

Active Publication Date: 2018-08-28
AIRBUS OPERATIONS (SAS)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, overcurrents of hundreds or even thousands of amperes may occur for milliseconds

Method used

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  • Electrical protection using semiconductor switches
  • Electrical protection using semiconductor switches
  • Electrical protection using semiconductor switches

Examples

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Embodiment Construction

[0065] first refer to figure 1 The protection device 100 according to the embodiment of the present invention will be described. The illustration of the device according to the invention will also make it possible to illustrate the method according to the invention.

[0066] The protective device 100 is placed on an electrical link 101 connected in series between a power source 102 comprising a voltage source and a load 103 which is eg an item of electrical equipment.

[0067] The assembly comprising the electrical link 101 , the voltage source 102 , the load 103 and the protection device 100 forms a circuit 110 according to the invention.

[0068] The device 100 protects the circuit against overcurrent traveling along the link towards the load 103 . In particular, the device 100 protects the load 103 and the electrical link 101 .

[0069] Power source 102 may include an aircraft battery and / or an aircraft generator. "Generator of an aircraft" will be used to describe a ge...

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PUM

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Abstract

The subject matter disclosed herein relates to methods and devices for protecting a circuit against overcurrents. The device uses variable impedance properties of a semiconductor switch and includes closed-loop control for controlling the impedance of the switch as a function of the overcurrents to be corrected. The physical design stresses of an electrical circuit, linked to the protection against overcurrents, can therefore be limited.

Description

technical field [0001] The invention relates to the field of methods implemented in an aircraft to protect electrical circuits of the aircraft against overcurrents. The invention also relates to a device for protecting an electrical circuit against overcurrent, said electrical circuit comprising a load powered by an electrical power source of an aircraft. Background technique [0002] An overcurrent is a current greater than the nominal current associated with the load. For reference, the nominal current of a load is the current that flows in the load under ideal operating conditions. Excessive currents can be generated by the load's power supply, especially in the event of a short circuit. [0003] Throughout this document, the term "load" will refer to an electrical load. [0004] Various devices implemented in aircraft for protecting electrical circuits against overcurrent are known from the prior art. These devices include electromechanical switches that can assume a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H9/02
CPCH02H9/025B64D45/00H02H3/025
Inventor 克里斯蒂安·多纳迪耶
Owner AIRBUS OPERATIONS (SAS)
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