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ee voltage detection device and method for igbt

A technology of voltage detection and voltage, applied in the electronic field, to achieve the effect of facilitating fault diagnosis, realizing intelligent control, and benefiting intelligent control

Active Publication Date: 2022-04-26
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] IGBTs are widely used in the field of converters, and the stability of the converter is particularly important. When a fault occurs, it needs to be able to respond quickly, otherwise it will cause greater economic losses

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  • ee voltage detection device and method for igbt
  • ee voltage detection device and method for igbt
  • ee voltage detection device and method for igbt

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] The present invention can simultaneously detect multiple digital state information of the emitter signal VEe, and then determine electrical faults that may occur during IGBT operation, thereby locating faults more quickly and accurately, providing signal input for fault diagnosis and intelligent control, and greatly simplifying Troubleshooting work.

[0036] figure 1 A structural block diagram of an Ee voltage detection device for an IGBT according to an embodiment of the present invention is shown.

[0037] like figure 1 As shown, the Ee voltage detection device 100 includes an Ee voltage detection sampling unit 101 , a state monitoring threshold setting unit 102 , an Ee voltage state comparison unit 103 , an Ee voltage state conversio...

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Abstract

The present invention provides an Ee voltage detection device for IGBT, which includes: Ee voltage detection sampling unit, which is used to collect the emitter voltage VEe of the IGBT to be detected, and compare the emitter voltage VEe after dividing and filtering Input signal Vee; state monitoring threshold setting unit, which is used to set the high-level threshold Vref1 and low-level threshold Vref2 of the IGBT emitter Ee voltage to be detected; Ee voltage state comparison unit, which is used to obtain the IGBT emitter Ee to be detected High-level state and low-level state of voltage; Ee voltage state conversion unit, which is used to obtain high-level state signal, intermediate-level state signal and low-level state signal; Ee voltage state processing unit, which is used to obtain High-level status codes, mid-level status codes, and low-level status codes. The invention can quickly and accurately locate the fault of the Ee voltage of the IGBT emitter, facilitate fault diagnosis, facilitate the realization of intelligent control, and enhance the reliability and stability of the intelligent control.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to an Ee voltage detection device and method for IGBT. Background technique [0002] IGBTs are widely used in the field of converters, and the stability of the converter is particularly important. When a fault occurs, it needs to be able to respond quickly, otherwise it will cause large economic losses. The emitter signal VEe of the IGBT is an important parameter index for its normal operation. [0003] For electrical faults generated by the IGBT emitter signal VEe, in the prior art, it is often necessary to disassemble the corresponding drive board and IGBT, debug step by step to find out the fault point, and then perform fault analysis. In order to simplify troubleshooting, realize fault diagnosis and intelligent control, it is necessary to monitor multiple digital state information of the emitter signal VEe, so as to quickly and accurately locate the fault. [0004] Therefo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/165G01R31/26
CPCG01R19/16576G01R31/2601
Inventor 陈正文魏海山梁玉朱武王晓年孙康康马龙昌欧阳柳唐威杨乐乐陈燕平窦泽春
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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