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Direct-current high-voltage super-power IGBT short-circuit protection circuit

A short-circuit protection circuit, super power technology, applied in emergency protection circuit devices, circuit devices, emergency protection devices with automatic disconnection, etc., can solve problems such as long response time, and achieve the effect of protecting safety and protecting electrical equipment

Pending Publication Date: 2021-09-07
马鞍山市安储信诚矿山机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This application provides a DC high-voltage ultra-high-power IGBT short-circuit protection circuit to solve the problem of long response time of high-power short-circuit protection devices in the prior art

Method used

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  • Direct-current high-voltage super-power IGBT short-circuit protection circuit
  • Direct-current high-voltage super-power IGBT short-circuit protection circuit

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Embodiment

[0033] refer to figure 1 , figure 1 A schematic structural diagram of a DC high-voltage ultra-high-power IGBT short-circuit protection circuit provided for the embodiment of the present application, as shown in figure 1 As shown, the short circuit protection circuit includes at least the following structures:

[0034] A plurality of parallel-connected IGBT1, a main drive module 2, at least one slave drive module 3 ( figure 1 Among them are 2 slave drive modules 3) and an overcurrent detection module 4; where,

[0035] The collectors (C poles) of multiple IGBT1s are connected as the input end of the DC high-voltage ultra-high power supply; the gate (G pole) of each IGBT1 is connected to the control signal output end of the main drive module 2 or connected to the control signal output end of the slave drive module 3 Control signal output terminal; the emitters (E poles) of multiple IGBT1s are connected and used as the output terminal of the DC high-voltage ultra-high-power po...

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Abstract

The invention relates to a direct-current high-voltage super-power IGBT short-circuit protection circuit. The main driving module and the auxiliary driving module are used for synchronously controlling a plurality of IGBTs which are connected in parallel respectively, and the over-current detection module is used for detecting the current of the output end, so that the connection and disconnection control of the direct-current high-voltage super-power power supply can be realized, and the power supply can be disconnected within microsecond-level time after the load is short-circuited or over-current and other abnormities. The problem that an existing short-circuit protection device is too long in response time is solved, and the safety of loads and related circuits is effectively protected. The short-circuit protection circuit can be used in various occasions such as traction, railway power supply and the like, and electrical equipment is effectively protected.

Description

technical field [0001] The present application relates to the technical field of short-circuit protection, in particular to a DC high-voltage ultra-high-power IGBT short-circuit protection circuit. Background technique [0002] The current high-power short-circuit protection devices are all tripped mechanically, and the response time is milliseconds. When the load has an overcurrent or short circuit fault, due to the long response time of the protection device, it is easy to cause damage to the switching device and the load, and it is easy to trigger the protection trip of the upper power supply department, which will affect the normal use of other power supply lines. In addition, if the contact point If the adhesion cannot be separated, the scope of failure will be expanded, and even personal injury and major equipment accidents will be caused, resulting in economic losses. Therefore, there is an urgent need for a DC high-voltage ultra-high-power circuit protection switch ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/087
CPCH02H3/087
Inventor 袁正洋
Owner 马鞍山市安储信诚矿山机械制造有限公司
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