KR960036234A - Overcurrent Blocking Large Current Output Device Protection Devices - Google Patents

Overcurrent Blocking Large Current Output Device Protection Devices Download PDF

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Publication number
KR960036234A
KR960036234A KR1019950004958A KR19950004958A KR960036234A KR 960036234 A KR960036234 A KR 960036234A KR 1019950004958 A KR1019950004958 A KR 1019950004958A KR 19950004958 A KR19950004958 A KR 19950004958A KR 960036234 A KR960036234 A KR 960036234A
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KR
South Korea
Prior art keywords
overcurrent
output device
current output
protection device
switching means
Prior art date
Application number
KR1019950004958A
Other languages
Korean (ko)
Other versions
KR100189890B1 (en
Inventor
이상룡
Original Assignee
이대원
삼성항공산업 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 이대원, 삼성항공산업 주식회사 filed Critical 이대원
Priority to KR1019950004958A priority Critical patent/KR100189890B1/en
Publication of KR960036234A publication Critical patent/KR960036234A/en
Application granted granted Critical
Publication of KR100189890B1 publication Critical patent/KR100189890B1/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
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
    • H03K17/08112—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit in bipolar transistor switches

Abstract

본 발명은 대전류 출력 기기의 보호장치에 관한 것으로, 상세하게는 서보, 인버터 등의 AC, DC 모터구동 장치, 히터, 에어컨 등의 전열 기기에서 발생하는 과전류를 차단하여 보호하기 위한 과전류 차단 대전류 출력 기기 보호 장치에 관한 것이다.The present invention relates to a protection device for a large current output device, and more particularly, an overcurrent blocking high current output device for blocking and protecting overcurrent generated by an AC, DC motor driving device such as a servo and an inverter, a heater, an air conditioner, and the like. It relates to a protection device.

즉, 본 발명에 따른 대전류 출력 기기 보호 장치는 반도체 스위칭 소자의 특성, 즉 베이스 혹은 게이트에 바이어스 전류를 흘릴 때 생기는 에미터와 켈렉터 사이에 생기는 전압강하의 크기는 흘려주는 바이어스 전류의 크기에 선형적으로 비례한다는 특성을 이용하여, 이 전압 강하를 검출하여 이 전압이 일정치 이하로 떨어질 경우 과전류 발생으로 판단하여 구동 회로를 차단함과 동시에 경보음을 울려주어 회로를 보호하며, 또한 구동 회로를 차단하여 회로를 보호하여 주는 보호 장치를 구동부와 일체형으로 형성하여 회로 보호에 신뢰성을 확보토록 하고 있다.That is, the large current output device protection device according to the present invention is characterized by the characteristics of the semiconductor switching element, that is, the magnitude of the voltage drop generated between the emitter and the selector when a bias current flows through the base or the gate is linear to the magnitude of the bias current flowing. By using the characteristic of proportionality, it detects this voltage drop and if it falls below a certain value, it judges that over current occurs and shuts off the driving circuit and simultaneously sounds the alarm and protects the circuit. A protection device that protects the circuit by blocking it is formed integrally with the driving unit to ensure reliability in circuit protection.

Description

과전류 차단 대전류 출력 기기 보호 장치Overcurrent Blocking Large Current Output Device Protection Devices

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제2도는 본 발명에 따른 대전류 출력 기기 보호 장치의 회로도이다.2 is a circuit diagram of a high current output device protection device according to the present invention.

Claims (5)

구동하고자 하는 부하에 전류를 공급하는 반도체 스위칭 수단과, 이 스위칭 수단을 구동하기 위한 구동 수단들을 구비하여 된 대전류 기기에 있어서, 상기 스위칭 수단에 과전류가 흐르는 가를 감지하여 주는 과전류 감지 수단; 상기 과전류 수단에 상기 과전류가 감지될 경우 이 과전류를 차단하도록 상기 구동수단과 일체형으로 만들어진 과전류 차단 수단; 그리고 상기 과전류가 흐를 경우 이를 알려주는 경보 수단; 을 구비하여 된 것을 특징으로 하는 대전류 출력 기기 보호 장치.A high current device comprising semiconductor switching means for supplying current to a load to be driven and drive means for driving the switching means, comprising: overcurrent sensing means for sensing whether overcurrent flows through the switching means; Overcurrent blocking means integrally formed with the driving means to block the overcurrent when the overcurrent means is detected by the overcurrent means; And alarm means for informing when the overcurrent flows; A high current output device protection device, characterized in that provided. 제1항에 있어서, 상기 과전류 감지 수단은 상기 반도체 스위칭 수단의 양단의 전압을 검출하여 과전류 임을 감지하는 것을 특징으로 하는 대전류 출력 기기 보호 장치.The apparatus of claim 1, wherein the overcurrent sensing means detects a voltage at both ends of the semiconductor switching means to sense an overcurrent. 제1항에 있어서, 상기 과전류 차단 수단은 상기 반도체 스위칭 수단의 양단에서 감지된 전압을 입력으로 하여 턴온되어 상기 구동 수단을 턴오프시키는 스위칭 수단을 구비하여 된 것을 특징으로 하는 대전류 출력 기기 보호 장치.2. The apparatus of claim 1, wherein the overcurrent blocking means comprises switching means for turning on the driving means by turning on the voltage sensed at both ends of the semiconductor switching means as an input. 제1항 또는 제3항에 있어서, 상기 과전류 경보 수단은 상기 과전류 차단 수단에 접속되어 이 과전류 차단 수단이 턴온될 경우 흐르는 전류에 의해 경보 신호를 생성 전달하는 포토 커플러를 구비하여 된 것을 특징으로 하는 대전류 출력 기기 보호 장치.4. The photocurrent coupler according to claim 1 or 3, wherein the overcurrent alarm means is provided with a photo coupler connected to the overcurrent interruption means to generate and transmit an alarm signal by a current flowing when the overcurrent interruption means is turned on. High current output device protection device. 제3항에 있어서, 상기 스위칭 수단은 그 입력단에 소정 전압 이상의 역 전압이 인가되었을 때 통전되는 정전압 다이오드를 구비한 것을 특징으로 하는 대전류 출력 기기 보호 장치.4. The apparatus of claim 3, wherein the switching means includes a constant voltage diode that is energized when a reverse voltage of a predetermined voltage or more is applied to an input terminal thereof. ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is to be disclosed based on the initial application.
KR1019950004958A 1995-03-10 1995-03-10 A protecting apparatus for over-current of the power supply with a great current KR100189890B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950004958A KR100189890B1 (en) 1995-03-10 1995-03-10 A protecting apparatus for over-current of the power supply with a great current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950004958A KR100189890B1 (en) 1995-03-10 1995-03-10 A protecting apparatus for over-current of the power supply with a great current

Publications (2)

Publication Number Publication Date
KR960036234A true KR960036234A (en) 1996-10-28
KR100189890B1 KR100189890B1 (en) 1999-06-01

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100942114B1 (en) 2007-11-06 2010-02-12 엘에스산전 주식회사 Apparatus for driving switching device

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