KR940010469A - Inverter overload protection device - Google Patents

Inverter overload protection device Download PDF

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Publication number
KR940010469A
KR940010469A KR1019920020147A KR920020147A KR940010469A KR 940010469 A KR940010469 A KR 940010469A KR 1019920020147 A KR1019920020147 A KR 1019920020147A KR 920020147 A KR920020147 A KR 920020147A KR 940010469 A KR940010469 A KR 940010469A
Authority
KR
South Korea
Prior art keywords
voltage
inverter
rated
load
protection device
Prior art date
Application number
KR1019920020147A
Other languages
Korean (ko)
Other versions
KR100239117B1 (en
Inventor
신우석
Original Assignee
이헌조
주식회사 금성사
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.)
Filing date
Publication date
Application filed by 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019920020147A priority Critical patent/KR100239117B1/en
Publication of KR940010469A publication Critical patent/KR940010469A/en
Application granted granted Critical
Publication of KR100239117B1 publication Critical patent/KR100239117B1/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
    • H02M1/14—Arrangements for reducing ripples from dc input or output

Abstract

본 발명은 유도전동기의 인버터 과부하 보호장치에 관한 것으로, 종래의 인버터 과부하 보호장치는 부하(모터)에 공급되는 전류를 3개의 전류센서로 감지하고 이들을 다시 디지탈 변환시키는 A/D변환기가 요구되므로 부피상승과 원가상승이 초래되고, 과부하 반한특성의 참조 테이블을 32개 워드단위로 구성해야 되므로 마이컴의 메모리를 차지하는 용량이 커지게 되는 등의 문제점을 해결하기 위한 것이다.The present invention relates to an inverter overload protection device of an induction motor, and the conventional inverter overload protection device requires an A / D converter for sensing current supplied to a load (motor) with three current sensors and converting them again. This is to solve the problems such as the increase of the cost and the increase of the cost, and the need to configure the reference table of the overload characteristic in 32 word units, which increases the capacity of the microcomputer memory.

따라서 본 발명은 전류센서의 사용을 배제하고, 인버터의 전류전원단에서 전류변화를 검출하며, 검출전류를 기준값과 비교한 결과로 마이컴이 반한시 특성을 수행하도록 하므로서 제품의 소형 경량화 및 회로구성의 간소화, 원가절감을 기하고 소요메모리 용량을 줄여줄 수 있도록한 것으로, 인버터에 적용한다.Therefore, the present invention eliminates the use of the current sensor, detects the current change at the current power supply terminal of the inverter, and compares the detected current with the reference value, so that the microcomputer performs the inverse time characteristic, thereby reducing the size and weight of the product It is designed to simplify, reduce costs, and reduce required memory capacity. It is applied to inverters.

Description

인버터의 과부하 보호장치Inverter overload protection device

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

제3도는 인버터 부하의 반한시 특성도,3 is an inverse time characteristic diagram of an inverter load,

제4도는 본 발명 인버터의 과부하 보호장치 블록구성도,4 is a block diagram of an overload protection device of the inverter of the present invention,

제5도는 본 발명 인버터의 과부하 보호장치 상세회로도,5 is a detailed circuit diagram of the overload protection device of the inverter of the present invention,

제6도는 본 발명 장치의 동작을 보인 플로우챠트.6 is a flowchart showing the operation of the apparatus of the present invention.

Claims (2)

입력교류전원(ACV)을 정류하는 정류부(1)와, 정류된 직류전원을 스위칭 구동시켜 모터(3)에 안정화 전원으로 공급하는 인버터부(2)와, 상기 정류부(1)에서 인버터부(2)로 공급되는 전류를 전압으로 감지해내는 부하검출저항(R0)과, 상기 저항(R0)양단에 걸리는 전압을 부하의 정격 초과단계에 대응하는 전압과 비교하여 정격 초과량을 검출해내는 과부하 검출부(9)와, 상기 과부하 검출부(9)에서 검출된 신호를 해석하여 정격초과량을 판단하고 그에 대응하는 시간경과시 인버터 동작을 정지 제어하는 마이컴(10)으로 구성된 인버터의 과부하 보호장치.A rectifier 1 for rectifying the input AC power supply, an inverter part 2 for switching the rectified DC power supply to the motor 3 as a stabilized power supply, and an inverter part 2 in the rectifier part 1. Load detection resistor (R0) that detects the current supplied to the voltage as a voltage, and an overload detection unit that detects the rated excess by comparing the voltage across the resistor (R0) with the voltage corresponding to the over-rated stage of the load (9) and a microcomputer (10) configured to analyze the signal detected by the overload detection unit (9) to determine the rated excess amount and to stop the inverter operation when the corresponding time elapses. 제1항에 있어서, 상기 과부하 검출부(9)는, 부하검출저항(R0)양단에 걸리는 전압을 반한시 특성에 맞게 부하의 정격초과 단계별로 분압 처리해주는 저항(R1 내지 R10)과, 상기 저항(R1 내지 R10)에 걸리는 부하의 정격초과 단계별 전압에 의해 선택적으로 온/오프되는 광결합기(P1 내지 P5)와, 상기 광결합기(P1 내지 P5)와, 온/오프신호를 정격초과 단계의 검출신호로 마이컴(10)에 각각 공급해주는 저항(R11 내지 R20)으로 구성된 인버터의 과부하 보호장치.According to claim 1, wherein the overload detection unit 9, the resistor (R1 to R10) for performing voltage-dividing step by step over rated rating of the load according to the inverse time characteristic of the voltage across the load detection resistor (R0) and the resistance ( Optocouplers P1 to P5, which are selectively turned on / off by the voltage exceeding the rated phase of the load applied to R1 to R10, the optical couplers P1 to P5, and the on / off signal are detected signals of the rated excess phase. Overload protection device of the inverter consisting of resistors (R11 to R20) respectively supplied to the microcomputer 10. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920020147A 1992-10-30 1992-10-30 Over-load protecting apparatus of an inverter KR100239117B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019920020147A KR100239117B1 (en) 1992-10-30 1992-10-30 Over-load protecting apparatus of an inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019920020147A KR100239117B1 (en) 1992-10-30 1992-10-30 Over-load protecting apparatus of an inverter

Publications (2)

Publication Number Publication Date
KR940010469A true KR940010469A (en) 1994-05-26
KR100239117B1 KR100239117B1 (en) 2000-01-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019920020147A KR100239117B1 (en) 1992-10-30 1992-10-30 Over-load protecting apparatus of an inverter

Country Status (1)

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KR (1) KR100239117B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100320178B1 (en) * 1999-02-01 2002-01-10 구자홍 Speed control method for switched reluctance motor
KR102475112B1 (en) * 2021-08-18 2022-12-07 지엔에스엠 주식회사 Protection apparatus of inverter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100873716B1 (en) 2007-02-07 2008-12-12 (주)피앤케이하이테크 inveter
CN107866811B (en) * 2017-10-24 2019-12-27 北京镁伽机器人科技有限公司 Over-step self-adjusting method, motion control component and robot

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100320178B1 (en) * 1999-02-01 2002-01-10 구자홍 Speed control method for switched reluctance motor
KR102475112B1 (en) * 2021-08-18 2022-12-07 지엔에스엠 주식회사 Protection apparatus of inverter

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Publication number Publication date
KR100239117B1 (en) 2000-01-15

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