JP2017199677A - 漏電遮断器の制御回路 - Google Patents
漏電遮断器の制御回路 Download PDFInfo
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- 238000001514 detection method Methods 0.000 claims abstract description 31
- 230000005669 field effect Effects 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/10—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess voltage, e.g. for lightning protection
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is DC
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
- G05F1/575—Regulating voltage or current wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices characterised by the feedback circuit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is DC
- G05F3/10—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/26—Current mirrors
- G05F3/265—Current mirrors using bipolar transistors only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/123—Automatic release mechanisms with or without manual release using a solid-state trip unit
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
- H02H3/162—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for AC systems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
- H02H3/33—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current additionally responsive to some other abnormal electrical conditions
- H02H3/105—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current additionally responsive to some other abnormal electrical conditions responsive to excess current and fault current to earth
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/04—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for transformers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection
- H03F3/45484—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with bipolar transistors as the active amplifying circuit
- H03F3/45596—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with bipolar transistors as the active amplifying circuit by offset reduction
- H03F3/456—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection in differential amplifiers with bipolar transistors as the active amplifying circuit by offset reduction by using a feedback circuit
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Nonlinear Science (AREA)
- Breakers (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
【解決手段】本発明による漏電遮断器の制御回路は、回路の零相電流を漏電検出信号として検出する零相変流器10と、前記漏電検出信号に含まれる高周波ノイズを除去するフィルタ回路部20と、前記漏電検出信号の電流とフィルタ回路部20のインピーダンスにより形成される電圧を増幅し、ベースがフィルタ回路部20の両出力端にそれぞれ接続される一対のトランジスタQ1、Q2を備える入力増幅器30と、一対のトランジスタQ1、Q2のベースに共通に接続され、一対のトランジスタQ1、Q2に同じ量のベース電流を供給するベース電流発生器60と、入力増幅器30から出力される前記増幅された電圧の値と予め設定された基準電圧値とを比較してトリップ制御信号を出力するか否かを決定するトリップ決定回路部40とを含む。
【選択図】図1
Description
は再び零相変流器10に送られる。
と入力増幅器30の増幅度の積に相当する零相電流(IL)の電圧変換値の誤差(オフセット電圧)が発生する。
が入力増幅器30により増幅される。
を入力電圧として入力増幅器30に印加する。
に変換される。よって、本発明において、増幅される前の前記漏電検出信号は、フィルタ回路部20において形成される電圧値となる。
20 フィルタ回路部
30 入力増幅器
40 トリップ決定回路部
50 トリップ機構
60 ベース電流発生器
70 ゲイン調整器
Claims (8)
- 回路の零相電流を漏電検出信号として検出する零相変流器と、
前記漏電検出信号に含まれる高周波ノイズを除去するフィルタ回路部と、
前記漏電検出信号の電流及び前記フィルタ回路部のインピーダンスにより形成される電圧を増幅し、ベースが前記フィルタ回路部の両出力端にそれぞれ接続される一対のトランジスタを備える入力増幅器と、
前記一対のトランジスタのベースに共通に接続され、前記一対のトランジスタに同じ量のベース電流を供給するベース電流発生器と、
前記入力増幅器から出力される前記漏電検出信号としての前記増幅された電圧の値と予め設定された基準電圧値とを比較してトリップ制御信号を出力するか否かを決定するトリップ決定回路部とを含む、漏電遮断器の制御回路。 - 前記ベース電流発生器は、電流ミラー回路で構成される、請求項1に記載の漏電遮断器の制御回路。
- 前記電流ミラー回路は、BJT(Bipolar Junction Transistor)ミラー回路である、請求項2に記載の漏電遮断器の制御回路。
- 前記電流ミラー回路は、MOSFET(Metal Oxide Semiconductor Field Effect Transistor)ミラー回路である、請求項2に記載の漏電遮断器の制御回路。
- 前記電流ミラー回路は、
基準電流が流れる第1BJTと、
前記第1BJTのベースに接続されるベースを有し、前記基準電流と同じ電流値の出力電流を供給する第2BJTと、
前記第1BJTのベースに接続されるベースを有し、前記基準電流と同じ電流値の出力電流を供給する第3BJTとを含む、請求項2に記載の漏電遮断器の制御回路。 - 前記第1BJT、前記第2BJT及び前記第3BJTは、同じ電気的特性を有するBJTで構成される、請求項5に記載の漏電遮断器の制御回路。
- 前記ベース電流発生器に接続され、前記一対のトランジスタのベースに供給される前記ベース電流を調整することにより、前記ベース電流に対する前記一対のトランジスタのコレクタ電流のゲインを調整するゲイン調整器をさらに含む、請求項1に記載の漏電遮断器の制御回路。
- 前記ゲイン調整器は、定電圧源と、前記定電圧源に直列に接続される可変抵抗とから構成され、前記可変抵抗の抵抗値の調整により前記ベース電流を調整するように構成される、請求項7に記載の漏電遮断器の制御回路。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020160052316A KR102485879B1 (ko) | 2016-04-28 | 2016-04-28 | 누전차단기 |
| KR10-2016-0052316 | 2016-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2017199677A true JP2017199677A (ja) | 2017-11-02 |
Family
ID=58632265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2017090346A Pending JP2017199677A (ja) | 2016-04-28 | 2017-04-28 | 漏電遮断器の制御回路 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10559434B2 (ja) |
| EP (1) | EP3240130A1 (ja) |
| JP (1) | JP2017199677A (ja) |
| KR (1) | KR102485879B1 (ja) |
| CN (1) | CN107340797A (ja) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10910825B2 (en) * | 2018-03-21 | 2021-02-02 | Eaton Intelligent Power Limited | Input impedance management and leakage current detection |
| KR101979216B1 (ko) * | 2018-08-08 | 2019-05-17 | 주식회사 써니아이씨 | 누설전류 검출장치 및 이 장치를 갖는 누전차단기 |
| KR102672226B1 (ko) * | 2019-01-07 | 2024-06-05 | 엘에스일렉트릭(주) | 누설 전류의 유형을 출력할 수 있는 누전 차단기 및 그 제어 방법 |
| US11411385B2 (en) | 2020-12-03 | 2022-08-09 | Kedu Electric Co., Ltd. | Timing leakage protection circuit and device containing same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4639684A (en) * | 1984-11-06 | 1987-01-27 | Harris Corporation | Differential input stage for the realization of low noise and high precision bipolar transistor amplifiers |
| US6636111B1 (en) * | 2002-07-26 | 2003-10-21 | Linear Technology Corporation | Bootstrap circuit to cancel input bias currents of a differential amplifier over most of common-mode input voltage range |
| WO2004001924A1 (en) * | 2002-06-24 | 2003-12-31 | Shakira Limited | Residual current detection circuit |
| JP2010272523A (ja) * | 2009-05-21 | 2010-12-02 | Ls Industrial Systems Co Ltd | 回路遮断器用異常電流検出回路 |
| US20110234322A1 (en) * | 2010-03-23 | 2011-09-29 | Analog Devices, Inc. | Apparatus and method for reducing current noise |
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| US4150411A (en) * | 1977-12-15 | 1979-04-17 | General Electric Company | Ground fault circuit interrupter utilizing a single transformer |
| JPH06196945A (ja) | 1992-12-24 | 1994-07-15 | Toshiba Corp | 差動増幅回路 |
| JP3684568B2 (ja) | 1999-06-22 | 2005-08-17 | 横河電機株式会社 | 遅延時間可変回路 |
| US6255887B1 (en) | 1999-08-12 | 2001-07-03 | Texas Instruments Incorporated | Variable transconductance current mirror circuit |
| FR2850495B1 (fr) | 2003-01-24 | 2005-06-03 | Schneider Electric Ind Sas | Dispositif de protection differentielle et appareil de coupure electrique comportant un tel dispositif |
| US7271444B2 (en) * | 2003-12-11 | 2007-09-18 | International Business Machines Corporation | Wrap-around gate field effect transistor |
| KR100647150B1 (ko) | 2004-12-22 | 2006-11-23 | (주) 아모센스 | 자성코어를 갖는 누전차단기 |
| KR100933533B1 (ko) * | 2007-07-11 | 2009-12-23 | 주식회사 코본테크 | 누전차단기의 전자파장애 방지장치 |
| WO2009014143A1 (ja) | 2007-07-24 | 2009-01-29 | Panasonic Electric Works Co., Ltd. | 充電監視装置 |
| KR101466851B1 (ko) | 2008-12-30 | 2014-11-28 | 주식회사 동부하이텍 | 3개 입력들을 비교하는 비교 회로 |
| JP2010183721A (ja) | 2009-02-05 | 2010-08-19 | Mitsumi Electric Co Ltd | Ac電源検出回路および直流電源装置 |
| EP2815478B1 (en) * | 2012-02-15 | 2017-03-22 | Qualcomm Incorporated | Surge protection for differential input/output interfaces |
| JP6255700B2 (ja) | 2013-04-16 | 2018-01-10 | 富士電機株式会社 | 差動増幅器および漏電遮断器 |
| KR101864624B1 (ko) | 2014-07-11 | 2018-06-07 | 엘에스산전 주식회사 | 누전 차단기용 누전 결정 회로 |
-
2016
- 2016-04-28 KR KR1020160052316A patent/KR102485879B1/ko active Active
-
2017
- 2017-04-25 EP EP17167888.1A patent/EP3240130A1/en not_active Withdrawn
- 2017-04-27 US US15/499,789 patent/US10559434B2/en active Active
- 2017-04-28 JP JP2017090346A patent/JP2017199677A/ja active Pending
- 2017-04-28 CN CN201710296126.1A patent/CN107340797A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4639684A (en) * | 1984-11-06 | 1987-01-27 | Harris Corporation | Differential input stage for the realization of low noise and high precision bipolar transistor amplifiers |
| WO2004001924A1 (en) * | 2002-06-24 | 2003-12-31 | Shakira Limited | Residual current detection circuit |
| US6636111B1 (en) * | 2002-07-26 | 2003-10-21 | Linear Technology Corporation | Bootstrap circuit to cancel input bias currents of a differential amplifier over most of common-mode input voltage range |
| JP2010272523A (ja) * | 2009-05-21 | 2010-12-02 | Ls Industrial Systems Co Ltd | 回路遮断器用異常電流検出回路 |
| US20110234322A1 (en) * | 2010-03-23 | 2011-09-29 | Analog Devices, Inc. | Apparatus and method for reducing current noise |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3240130A1 (en) | 2017-11-01 |
| KR20170123098A (ko) | 2017-11-07 |
| US20170316896A1 (en) | 2017-11-02 |
| KR102485879B1 (ko) | 2023-01-06 |
| US10559434B2 (en) | 2020-02-11 |
| CN107340797A (zh) | 2017-11-10 |
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