KR970048496A - DC current sensing circuit using current transformer - Google Patents

DC current sensing circuit using current transformer Download PDF

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Publication number
KR970048496A
KR970048496A KR1019950061334A KR19950061334A KR970048496A KR 970048496 A KR970048496 A KR 970048496A KR 1019950061334 A KR1019950061334 A KR 1019950061334A KR 19950061334 A KR19950061334 A KR 19950061334A KR 970048496 A KR970048496 A KR 970048496A
Authority
KR
South Korea
Prior art keywords
current
current transformer
secondary side
transformer
sensing circuit
Prior art date
Application number
KR1019950061334A
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Korean (ko)
Other versions
KR0177988B1 (en
Inventor
성환호
Original Assignee
김광호
삼성전자 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 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019950061334A priority Critical patent/KR0177988B1/en
Publication of KR970048496A publication Critical patent/KR970048496A/en
Application granted granted Critical
Publication of KR0177988B1 publication Critical patent/KR0177988B1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

본 직류전류감지회로는 변류기를 통해 낮은 주파수에 실린 고주파에 포함되어 있는 직류전압까지도 감지할 수 있도록 하기 위한 것으로써, 본 회로는 1차측을 통해 직류와 교류전류가 혼합된 전류가 흐르는 변류기; 변류기의 2차측에 접속되어 1차측에 흐르는 전류와 비례하는 전압값을 검출할 수 있는 센싱소자; 센싱소자와 직렬로 접속되어 변류기의 2차측에 흐르는 교류전류를 충전하는 충전소자; 충전소자와 병렬로 구성되어 변류기의 2차측에 걸리는 전압의 증감상태를 제어하기 위한 전류원; 변류기의 2차측에 걸린 평균전압을 적분하여 전류원에 흐르는 전류값을 제어하기 적분기를 포함하도록 구성된다.This DC current detection circuit is to be able to detect the DC voltage included in the high frequency loaded at a low frequency through the current transformer, the circuit includes: a current transformer through which a mixed current of DC and AC current flows through the primary side; A sensing element connected to the secondary side of the current transformer and capable of detecting a voltage value proportional to a current flowing in the primary side; A charging element connected in series with the sensing element to charge an AC current flowing in the secondary side of the current transformer; A current source configured in parallel with the charging element to control the increase or decrease of the voltage across the secondary side of the current transformer; And an integrator for integrating the average voltage across the secondary side of the current transformer to control the current value flowing through the current source.

Description

변류기를 이용한 직류전류감지회로DC current sensing circuit using current transformer

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

제1도는 본 발명에 따른 변류기를 이용한 직류전류감지회로의 상세회로도.1 is a detailed circuit diagram of a DC current sensing circuit using a current transformer according to the present invention.

Claims (5)

1차측을 통해 직류와 교류전류가 혼합된 전류가 흐르는 변류기; 상기 변류기의 2차측에 접속되어 상기 1차측에 흐르는 전류와 비례하는 전압값을 검출할 수 있는 센싱소자; 상기 센싱소자와 직렬로 접속되어 상기 변류기의 2차측에 흐르는 교류전류를 충전하는 충전소자; 상기 충전소자와 병렬로 구성되어 상기 변류기의 2차측에 걸리는 전압의 증감상태를 제어하기 위한 전류원; 상기 변류기의 2차측에 걸린 평균전압을 적분하여 상기 전류원에 흐르는 전류값을 제어하기 적분기를 포함하는 것을 특징으로 하는 변류기를 이용한 직류전류감지회로.A current transformer through which a mixed current of direct current and alternating current flows through the primary side; A sensing element connected to the secondary side of the current transformer and capable of detecting a voltage value proportional to a current flowing in the primary side; A charging element connected in series with the sensing element to charge an alternating current flowing in the secondary side of the current transformer; A current source configured in parallel with the charging element to control a state of increase or decrease of the voltage across the secondary side of the current transformer; And an integrator for integrating the average voltage across the secondary side of the current transformer to control the current value flowing through the current source. 제1항에 있어서, 상기 직류전류감지회로는 상기 센싱소자를 통해 상기 변류기의 1차측으로 인가되는 직류전류를 감지할 수 있는 것을 특징으로 하는 변류기를 이용한 직류전류감지회로.The DC current sensing circuit of claim 1, wherein the DC current sensing circuit detects a DC current applied to the primary side of the current transformer through the sensing element. 제1항 또는 제2항에 있어서, 상기 센싱소자는 저항으로 이루어지는 것을 특징으로 하는 변류기를 이용한 직류전류감지회로.The DC current sensing circuit using a current transformer according to claim 1 or 2, wherein the sensing element is made of a resistor. 제1항에 있어서, 상기 직류전류감지회로는 상기 적분기에서 출력되는 신호를 전류값으로 변환하기 위한 전압전류 변환기를 더 포함하는 것을 특징으로 하는 변류기를 이용한 직류전류감지회로.The DC current sensing circuit of claim 1, wherein the DC current sensing circuit further comprises a voltage current converter for converting a signal output from the integrator into a current value. 제1항에 있어서, 상기 충전소자는 상기 변류기의 2차측의 교류전류만을 통과시키는 콘덴서로 이루어지는 것을 특징으로 하는 변류기를 이용한 직류전류감지회로.The DC current sensing circuit using the current transformer according to claim 1, wherein the charging element comprises a capacitor for passing only an alternating current of the secondary side of the current transformer. ※ 참고사항: 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the original application.
KR1019950061334A 1995-12-28 1995-12-28 DC current sensing circuit using current transformer KR0177988B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019950061334A KR0177988B1 (en) 1995-12-28 1995-12-28 DC current sensing circuit using current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019950061334A KR0177988B1 (en) 1995-12-28 1995-12-28 DC current sensing circuit using current transformer

Publications (2)

Publication Number Publication Date
KR970048496A true KR970048496A (en) 1997-07-29
KR0177988B1 KR0177988B1 (en) 1999-04-01

Family

ID=19445882

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019950061334A KR0177988B1 (en) 1995-12-28 1995-12-28 DC current sensing circuit using current transformer

Country Status (1)

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KR (1) KR0177988B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100364821B1 (en) * 2000-01-31 2002-12-16 엘지산전 주식회사 Apparatus for transform signal of current transformer
KR101258867B1 (en) * 2005-11-28 2013-04-29 르노 에스.아.에스. Out-of-line measurement of a current flowing through a load

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100364821B1 (en) * 2000-01-31 2002-12-16 엘지산전 주식회사 Apparatus for transform signal of current transformer
KR101258867B1 (en) * 2005-11-28 2013-04-29 르노 에스.아.에스. Out-of-line measurement of a current flowing through a load

Also Published As

Publication number Publication date
KR0177988B1 (en) 1999-04-01

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