KR960027206A - Overcurrent protection device of inverter - Google Patents

Overcurrent protection device of inverter Download PDF

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Publication number
KR960027206A
KR960027206A KR1019940040154A KR19940040154A KR960027206A KR 960027206 A KR960027206 A KR 960027206A KR 1019940040154 A KR1019940040154 A KR 1019940040154A KR 19940040154 A KR19940040154 A KR 19940040154A KR 960027206 A KR960027206 A KR 960027206A
Authority
KR
South Korea
Prior art keywords
output
gate
igbt
flip
overcurrent
Prior art date
Application number
KR1019940040154A
Other languages
Korean (ko)
Other versions
KR0120301B1 (en
Inventor
장경현
김인동
Original Assignee
석진철
대우중공업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 석진철, 대우중공업 주식회사 filed Critical 석진철
Priority to KR1019940040154A priority Critical patent/KR0120301B1/en
Publication of KR960027206A publication Critical patent/KR960027206A/en
Application granted granted Critical
Publication of KR0120301B1 publication Critical patent/KR0120301B1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0009—Devices or circuits for detecting current in a converter
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/322—Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Protection Of Static Devices (AREA)
  • Inverter Devices (AREA)

Abstract

본 발명은 철도 차량에 사용되는 인버터의 과전류 보호 장치에 관한 것으로, IGBT의 컬렉터(Collector)와 에미터(Emitter)간의 전압과 기준 전압을 비교하는 비교기(21); 상기 비교기의 출력이 과전류를 나타내면 출력을 로우(Low)시키는 OR게이트(22); 상기 OR게이트의 출력과 온·오프 신호를 받아서 두 입력이 로우(Low)일때만 출력을 하이(High)시키는 NOR게이트(23); 상기 NOR게이트의 출력을 받아들여 Q와단자로 각각 출력하는 플립 플롭(23); 상기 플립플롭단자의 로우 출력을 받아서 컨트롤러(30)로 FAULT 신호를 보내는 트랜스미터(24) 및; 상기 플립플롭 Q단자의 출력을 받아서 IGBT Gate를 역 바이어스(Bias)시키는 FET(Field Effect Transistor)(25)로 구성되어 과전류를 신속히 차단하여 IGBT를 보호하고 시스템의 안정성을 높이는 효과가 있다.The present invention relates to an overcurrent protection device for an inverter used in a railway vehicle, comprising: a comparator 21 for comparing a voltage and a reference voltage between a collector and an emitter of an IGBT; An OR gate 22 that lowers the output when the output of the comparator indicates an overcurrent; A NOR gate 23 that receives an output of the OR gate and an on / off signal and makes the output high only when the two inputs are low; Accepts the output of the NOR gate Flip-flops 23 respectively output to the terminals; The flip-flop A transmitter 24 that receives the low output of the terminal and sends a FAULT signal to the controller 30; It consists of a field effect transistor (FET) 25 that receives the output of the flip-flop Q terminal and reverse biases the IGBT gate, thereby rapidly blocking overcurrent, thereby protecting the IGBT and improving the stability of the system.

Description

인버터의 과전류 보호 장치Overcurrent protection device of inverter

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명에 의한 과전류 보호 장치를 도시한 블럭도, 제2도는 본 발명에 의한 IGBT GATE 구동 장치를 도시한 회로도로서, (가)는 과전류 보호 회로를 도시한 도면, (나)는 IGBT를 스위칭하기 위한 구동 회로를 도시한 도면.1 is a block diagram showing an overcurrent protection device according to the present invention, Figure 2 is a circuit diagram showing an IGBT GATE driving device according to the present invention, (a) is a view showing an overcurrent protection circuit, (b) is an IGBT Figure showing a driving circuit for switching the.

Claims (1)

차량 철도에 쓰이는 3레벨 인버터내의 IGBT에 흐르는 과전류를 검출하면 상기 IGBT를 턴오프하여 IGBT를 보호하고 과전류 검출신호를 컨트롤러로 송신하는 인버터의 과전류 보호 장치에 있어서, IGBT의 컬렉터와 에미터간의 전압과 기준 전압을 비교하는 비교기(21); 상기 비교기의 출력이 과전류를 나타내면 출력을 로우(Low)시키는 OR게이트(22); 상기 OR게이트의 출력과 온·오프 신호를 받아서 두 입력이 로우(Low)일때만 출력이 하이(High)시키는 NOR게이트(23); 상기 NOR게이트의 출력을 받아들여 Q와단자로 각각 출력하는 플립플롭(24); 상기 플립플롭단자의 로우 출력을 받아서 컨트롤러(30)로 FAULT 신호를 보내는 트랜스미터(25); 상기 플립플롭 Q단자의 하이(High) 출력을 받아서 IGBT Gate를 역 바이어스(Bias)시키는 FET(Field Effect Transistor)(26)로 구성되는 것을 특징으로 하는 인버터의 과전류 보호 장치.In the overcurrent protection device of the inverter which turns off the IGBT to protect the IGBT and transmits the overcurrent detection signal to the controller when the overcurrent flowing through the IGBT in the three-level inverter used in the vehicle railway is detected, the voltage between the collector and the emitter of the IGBT A comparator 21 for comparing the reference voltages; An OR gate 22 that lowers the output when the output of the comparator indicates an overcurrent; A NOR gate 23 that receives an output of the OR gate and an on / off signal and outputs high only when two inputs are low; Accepts the output of the NOR gate Flip-flops 24 each outputting to a terminal; The flip-flop A transmitter 25 receiving the low output of the terminal and sending a FAULT signal to the controller 30; And a field effect transistor (FET) (26) for receiving a high output of the flip-flop Q terminal to reverse bias the IGBT gate. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940040154A 1994-12-30 1994-12-30 Device for preventing over current of an inverter in a railcar KR0120301B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940040154A KR0120301B1 (en) 1994-12-30 1994-12-30 Device for preventing over current of an inverter in a railcar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940040154A KR0120301B1 (en) 1994-12-30 1994-12-30 Device for preventing over current of an inverter in a railcar

Publications (2)

Publication Number Publication Date
KR960027206A true KR960027206A (en) 1996-07-22
KR0120301B1 KR0120301B1 (en) 1997-10-23

Family

ID=19406015

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940040154A KR0120301B1 (en) 1994-12-30 1994-12-30 Device for preventing over current of an inverter in a railcar

Country Status (1)

Country Link
KR (1) KR0120301B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100436352B1 (en) * 2001-06-19 2004-06-19 미쓰비시덴키 가부시키가이샤 Power semiconductor device
KR102009483B1 (en) 2018-11-30 2019-08-26 대한민국(방위사업청장) Special vehicle with inverter and Method for inverter safety control

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100512720B1 (en) * 2002-11-08 2005-09-07 삼성전자주식회사 power supply apparatus for motor and controlling method thereof
US10277111B2 (en) 2017-05-24 2019-04-30 Infineon Technologies Ag Output overvoltage protection for converters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100436352B1 (en) * 2001-06-19 2004-06-19 미쓰비시덴키 가부시키가이샤 Power semiconductor device
KR102009483B1 (en) 2018-11-30 2019-08-26 대한민국(방위사업청장) Special vehicle with inverter and Method for inverter safety control

Also Published As

Publication number Publication date
KR0120301B1 (en) 1997-10-23

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