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Module safety control protection and indication circuit based on IGBT driving

A technology for driving modules and indicating circuits, applied in circuit breaker testing, electrical components, electronic switches, etc., can solve problems such as poor anti-interference, inconvenient testing, and unstable IGBT driver protection values.

Pending Publication Date: 2020-10-27
成都通用整流电器研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In view of the above-mentioned deficiencies in the prior art, the IGBT-driven module safety control protection and indication circuit provided by the present invention solves the problems of unstable protection value, poor anti-interference and inconvenient testing of the existing IGBT driver

Method used

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  • Module safety control protection and indication circuit based on IGBT driving
  • Module safety control protection and indication circuit based on IGBT driving
  • Module safety control protection and indication circuit based on IGBT driving

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Such as figure 1 As shown, a module safety control protection and indication circuit based on IGBT drive includes a drive signal test module, a drive signal input interface module, a fault signal conversion module, a drive power supply module, a first IGBT drive module, a second IGBT drive module, The first IGBT over-current self-holding and indicating module, the second IGBT over-current self-holding and indicating module and an external interface module;

[0038] The output end of the drive signal test module is connected to the input end of the drive signal input interface module, and the output end of the drive signal input interface module is respectively connected to the IGBT upper bridge arm signal input end (pluse1) of the first IGBT drive module and the second IGBT drive module. The IGBT lower bridge arm signal input terminal (pluse2), the first IGBT overcurrent self-holding and indication module total fault signal output (ERR) and the second IGBT over-current ...

Embodiment 2

[0081] In this embodiment, the path direction of each signal when the module safety protection and indication circuit is working is provided:

[0082] Path 1: eg Figure 7 As shown, the power chip U1 in the drive power module generates DC+15V1 working power. When the DC24V power is sent to pin 1 and pin 2 of the terminal J2, L passes through D1 and D2 to chip U1 (power module DC24V becomes DC+15V1 , with E1(DC-9V));

[0083] Path 2: as in Figure 7 As shown, the power chip U3 in the power drive module generates DC+15V2 working power. When the DC24V power is sent to the terminal J2, pin 1, and pin 2, it passes through diodes D1 (diode) and D2 (diode) to U2 (power module DC24V Change DC+15V2, filtered by capacitor E1 and E2 (DC-9V) filtered by capacitor E2).

[0084] Path 3: as in Figure 8 As shown, the drive pulse input signal interface, J2 (drive pulse input signal interface), provides GND (power common terminal), pluse1 (IGBT upper bridge arm input signal), pluse2 (IGBT ...

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Abstract

The invention discloses a module safety control protection and indication circuit based on IGBT driving. The module safety control protection and indication circuit comprises a drive signal test module, a drive signal input interface module, a fault signal conversion module, a drive power supply module, a first IGBT drive module, a second IGBT drive module, a first IGBT over-current self-hold andindication module, a second IGBT over-current self-hold and indication module and an external interface module. According to the module safety control protection and indication circuit, when the IGBTdriver is switched on, VCE (when the IGBT is switched on, collector and emitter voltages) protection values are stable, the module safety control protection and indication circuit is high in anti-interference performance in the operation process, double-channel IGBT driving is adopted, a fault point can be self-locked in the protection process, the protection condition of any IGBT is clearly indicated, the input signal testing module is arranged, and testing of input driving signals is facilitated.

Description

technical field [0001] The invention belongs to the technical field of IGBT drive protection, and in particular relates to a module safety control protection and indication circuit based on IGBT drive. Background technique [0002] IGBT is a composite power device of power triode and MOS tube. It is a high-frequency power control switch. The switching frequency is relatively high. It usually works in the frequency range of 1KHZ to 50KHZ. The IGBT switching action is the PWM pulse sent by the driver. controlled. [0003] The IGBT driver is a high-frequency electronic circuit that drives the IGBT module to turn on or off. The performance of the IGBT driver directly affects the reliability of the IGBT switch action on or off, and also affects the conduction loss and turn-off of the IGBT switch. break loss. When the IGBT switch is turned on, if there is an output short circuit or overcurrent, the driver must quickly cut off the PWM pulse drive signal to make the IGBT turn off ...

Claims

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Application Information

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IPC IPC(8): H03K17/567H03K17/16H03K17/08H03K17/18G01R31/327
CPCH03K17/567H03K17/16H03K17/08H03K17/18G01R31/327
Inventor 蒲朝里江之奎罗军张建保江瀛
Owner 成都通用整流电器研究所
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