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DC current interruption system able to open a DC line with inductive behaviour

An open-circuit system and current technology, applied in circuits, high-voltage air circuit breakers, high-voltage/high-current switches, etc., can solve problems such as unsuitable DC lines, and achieve the effect of avoiding arcing and low cost

Active Publication Date: 2014-03-19
MERSEN FRANCE SB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to work correctly, the actuation of the mechanical circuit breakers must be performed according to a precise sequence in this solution, which is a working limitation
Also, this solution is only suitable for voltages around 40 volts (V) and currents around 2.5 amps (A), so it is not suitable for applications with higher voltage DC lines

Method used

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  • DC current interruption system able to open a DC line with inductive behaviour
  • DC current interruption system able to open a DC line with inductive behaviour
  • DC current interruption system able to open a DC line with inductive behaviour

Examples

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Embodiment Construction

[0034] A DC current interruption system with field effect transistors of the MOSFET ("Metal Oxide Semiconductor Field Effect Transistor") type will be described hereinafter. However, the invention is applicable to any type of semiconductor element, and in particular any type of field effect transistor.

[0035] The preferred application considered here is the use of the DC current interruption system of the present invention in the framework of photovoltaic current generation to generate bus current or a 600V / 30A high voltage DC line. However, the application of the invention usually has a wide range of DC bus limitations, the voltage range from 20 volts to 900 volts (currently the maximum voltage of MOSFET elements), and the current magnitude is related to the number of parallel connected semiconductor elements. Depending on the constraints of the DC bus, the individual components may be sized relative to the target application.

[0036] figure 1 The illustrated DC current ...

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PUM

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Abstract

The invention pertains to a DC current interruption system able to open a DC line with inductive behaviour, comprising a primary mechanical breaker (S0), a secondary mechanical breaker (S1) and an electronic overvoltage protection circuit (B1, B2) comprising at least one transistor. The DC current interruption system of the invention furthermore comprises an electronic opening system (72, 76) comprising a passive circuit able to auto-bias the electronic protection circuit (B1, B2) upon the opening of said primary mechanical breaker (S0), so as to trigger a switching of said at least one transistor (M1, M2, IG1) making it possible to limit the voltage and the current in the DC line, total interruption of said DC line being obtained by subsequent opening of said secondary mechanical breaker (S1).

Description

technical field [0001] The present invention relates to a DC current interruption system capable of breaking a direct current (DC) line having inductive properties. [0002] More generally, the field of the invention is that of DC circuit breakers. Background technique [0003] DC circuit breakers are widely used in various industrial, aerospace and automotive applications or for energy distribution. A DC breaker makes it possible to obtain full load on a long distance DC line or bus and thus has an inductive character in order to isolate the energy source from the network or load. [0004] It is known that, at high powers, the disconnection of the DC line produces a strong arc caused by the energy stored in the power network. To interrupt these arcs, various solutions based on costly and complex mechanical circuit breakers are known in the prior art. [0005] Hybrid solutions implementing semiconductor-based electronic and mechanical parts have been proposed. [0006] P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/59
CPCH01H33/596H02H3/20
Inventor F·撒鲁斯弗洛伦特·巴尔博尼多米尼克·图尼耶
Owner MERSEN FRANCE SB