JP4012637B2 - 漏電検出方法および装置 - Google Patents

漏電検出方法および装置 Download PDF

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Publication number
JP4012637B2
JP4012637B2 JP30770598A JP30770598A JP4012637B2 JP 4012637 B2 JP4012637 B2 JP 4012637B2 JP 30770598 A JP30770598 A JP 30770598A JP 30770598 A JP30770598 A JP 30770598A JP 4012637 B2 JP4012637 B2 JP 4012637B2
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JP
Japan
Prior art keywords
motor
current
gate drive
drive pulse
negative
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
JP30770598A
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English (en)
Japanese (ja)
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JPH11235047A5 (enExample
JPH11235047A (ja
Inventor
チャールズ・エドワート・コンラッド
ロバート・マシュー・ギャンバー
マッシモ・ポロ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
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General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of JPH11235047A publication Critical patent/JPH11235047A/ja
Publication of JPH11235047A5 publication Critical patent/JPH11235047A5/ja
Application granted granted Critical
Publication of JP4012637B2 publication Critical patent/JP4012637B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/52—Testing for short-circuits, leakage current or ground faults
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/0077—Characterised by the use of a particular software algorithm
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/08—Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters
    • H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using DC to AC converters or inverters with pulse width modulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/005—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of too low isolation resistance, too high load, short-circuit; earth fault
    • 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
    • H02H7/08—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 dynamo-electric motors
    • H02H7/0833—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 dynamo-electric motors for electric motors with control arrangements

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Ac Motors In General (AREA)
  • Inverter Devices (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
JP30770598A 1997-11-07 1998-10-29 漏電検出方法および装置 Expired - Lifetime JP4012637B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/966289 1997-11-07
US08/966,289 US5945802A (en) 1996-09-27 1997-11-07 Ground fault detection and protection method for a variable speed ac electric motor

Publications (3)

Publication Number Publication Date
JPH11235047A JPH11235047A (ja) 1999-08-27
JPH11235047A5 JPH11235047A5 (enExample) 2005-08-18
JP4012637B2 true JP4012637B2 (ja) 2007-11-21

Family

ID=25511170

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30770598A Expired - Lifetime JP4012637B2 (ja) 1997-11-07 1998-10-29 漏電検出方法および装置

Country Status (4)

Country Link
US (1) US5945802A (enExample)
EP (1) EP0915348B1 (enExample)
JP (1) JP4012637B2 (enExample)
DE (1) DE69833097T2 (enExample)

Families Citing this family (83)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837796A1 (de) * 1998-08-20 2000-02-24 Wilo Gmbh Verfahren zur Ermittlung des Pumpenzustandes
US6327124B1 (en) * 1999-02-05 2001-12-04 Smc Electrical Products, Inc. Low current ground fault relay
GB0000864D0 (en) * 2000-01-15 2000-03-08 Lucas Industries Ltd Power supply refresh control
US6427540B1 (en) * 2000-02-15 2002-08-06 Breed Automotive Technology, Inc. Pressure sensor system and method of excitation for a pressure sensor
KR20000036351A (ko) * 2000-02-19 2000-07-05 정현오 무선 자동 수위 조절시스템
US6499961B1 (en) * 2000-03-16 2002-12-31 Tecumseh Products Company Solid state liquid level sensor and pump controller
US6718474B1 (en) 2000-09-21 2004-04-06 Stratus Technologies Bermuda Ltd. Methods and apparatus for clock management based on environmental conditions
US6531842B2 (en) * 2001-06-25 2003-03-11 Schlumberger Technology Corp. Sine wave variable speed drive
JP2003102180A (ja) * 2001-09-21 2003-04-04 Hitachi Ltd 電車用モジュール形インバータ装置
JP2003176788A (ja) * 2001-12-10 2003-06-27 Matsushita Electric Ind Co Ltd リニアコンプレッサの駆動装置
US6856137B2 (en) * 2002-02-19 2005-02-15 Bae Systems Controls Inc. Ground fault detection system and method
US7746604B2 (en) * 2002-04-02 2010-06-29 General Electric Company Method, system, and computer software code for detection and isolation of electrical ground failure and secondary failure
US7035065B2 (en) * 2002-04-02 2006-04-25 General Electric Company Electrical ground isolation and secondary failure reduction detection and isolation
US6762920B2 (en) * 2002-04-30 2004-07-13 Eaton Corporation Electronic fault detector for variable frequency ac systems and circuit breaker incorporating same
KR100505049B1 (ko) * 2003-03-26 2005-08-03 엘에스산전 주식회사 인버터의 고장진단 방법
EP1501186B1 (en) * 2003-07-18 2018-08-22 III Holdings 10, LLC Motor driving apparatus
DE10336604A1 (de) * 2003-08-08 2005-03-03 BSH Bosch und Siemens Hausgeräte GmbH Verfahren und Schaltungsanordnung zur Überwachung der Funktionsweise eines oder mehrerer Verbraucherstromkreise, insbesondere eines Hausgeräts
US8540493B2 (en) 2003-12-08 2013-09-24 Sta-Rite Industries, Llc Pump control system and method
US8019479B2 (en) 2004-08-26 2011-09-13 Pentair Water Pool And Spa, Inc. Control algorithm of variable speed pumping system
US8480373B2 (en) 2004-08-26 2013-07-09 Pentair Water Pool And Spa, Inc. Filter loading
US7845913B2 (en) 2004-08-26 2010-12-07 Pentair Water Pool And Spa, Inc. Flow control
US8469675B2 (en) 2004-08-26 2013-06-25 Pentair Water Pool And Spa, Inc. Priming protection
US7874808B2 (en) 2004-08-26 2011-01-25 Pentair Water Pool And Spa, Inc. Variable speed pumping system and method
US7854597B2 (en) 2004-08-26 2010-12-21 Pentair Water Pool And Spa, Inc. Pumping system with two way communication
US8602745B2 (en) 2004-08-26 2013-12-10 Pentair Water Pool And Spa, Inc. Anti-entrapment and anti-dead head function
US7686589B2 (en) 2004-08-26 2010-03-30 Pentair Water Pool And Spa, Inc. Pumping system with power optimization
JP4554501B2 (ja) * 2005-01-18 2010-09-29 ファナック株式会社 モータの絶縁抵抗劣化検出方法、絶縁抵抗劣化検出装置およびモータ駆動装置
US7489105B2 (en) * 2005-03-21 2009-02-10 Eveready Battery Company, Inc. Portable power supply
US7344202B2 (en) * 2005-05-11 2008-03-18 General Electric Company System and method for dealing with ground fault conditions that can arise in an electrical propulsion system
US8193745B2 (en) * 2005-05-13 2012-06-05 Schlumberger Technology Corporation Filtering and boosting a signal from a drive circuit
US7498819B2 (en) * 2006-03-21 2009-03-03 General Electric Company Method, apparatus and computer-readable code for detecting an incipient ground fault in an electrical propulsion system
US7501830B2 (en) * 2006-03-21 2009-03-10 General Electric Company Method, apparatus and computer-readable code for detecting an incipient ground fault in an electrical propulsion system
US7498820B2 (en) * 2006-03-21 2009-03-03 General Electric Company Method, apparatus and computer-readable code for detecting an incipient ground fault in an electrical propulsion system
US7248057B1 (en) 2006-03-21 2007-07-24 General Electric Company Method, apparatus and computer-readable code for detecting on the fly an incipient ground fault in an electrical propulsion system of a locomotive
US7102355B1 (en) 2006-03-21 2006-09-05 General Electric Company Method, apparatus and computer-readable code for magnifying an incipient ground fault and enable quick detection of such fault
CA2671353C (en) 2006-08-04 2014-04-22 Direct Drive Pcp Inc. A motor direct drive rod ground screw pump device
US7489483B2 (en) * 2006-09-19 2009-02-10 Flextronics Automotive Inc. System and method for look ahead detection of electrical problems at a motor of a vehicle
KR101403349B1 (ko) * 2006-12-05 2014-06-05 신에쯔 세끼에이 가부시키가이샤 합성 불투명 석영유리 및 그 제조방법
US7805204B2 (en) * 2007-03-21 2010-09-28 Honeywell International Inc. Integrated electrical power distribution system using common building blocks
US8050806B2 (en) * 2007-03-21 2011-11-01 Honeywell International Inc. Ground fault interruption using DSP based SSPC module
EP2028756A1 (en) * 2007-08-23 2009-02-25 Siemens Aktiengesellschaft An Inverter With Short Circuit Protection
US7978446B2 (en) * 2008-02-29 2011-07-12 Caterpillar Inc. High voltage ground fault detection system
AU2009302593B2 (en) 2008-10-06 2015-05-28 Danfoss Low Power Drives Method of operating a safety vacuum release system
US8149551B2 (en) * 2009-04-09 2012-04-03 Hamilton Sundstrand Corporation Systems and methods involving motor drive ground fault interrupts
US8436559B2 (en) * 2009-06-09 2013-05-07 Sta-Rite Industries, Llc System and method for motor drive control pad and drive terminals
US9556874B2 (en) 2009-06-09 2017-01-31 Pentair Flow Technologies, Llc Method of controlling a pump and motor
US8564233B2 (en) 2009-06-09 2013-10-22 Sta-Rite Industries, Llc Safety system and method for pump and motor
JP5401250B2 (ja) * 2009-10-06 2014-01-29 日立オートモティブシステムズ株式会社 地絡検出装置
US8334670B2 (en) * 2010-03-25 2012-12-18 GM Global Technology Operations LLC Method and apparatus to monitor an electric motor control circuit
US9243413B2 (en) 2010-12-08 2016-01-26 Pentair Water Pool And Spa, Inc. Discharge vacuum relief valve for safety vacuum release system
US9075099B2 (en) * 2011-03-03 2015-07-07 Abb Research Ltd. Method for adaptation of ground fault detection
US20140049261A1 (en) * 2011-04-28 2014-02-20 Aerovironment, Inc. Pulsed missing ground detector circuit
KR20130019911A (ko) * 2011-08-18 2013-02-27 현대모비스 주식회사 차량용 제동 시스템에서 모터 권선 코일 이상 검출 장치 및 그 방법
JP5846818B2 (ja) * 2011-09-16 2016-01-20 ミネベア株式会社 電力制御装置
JP5726037B2 (ja) * 2011-09-30 2015-05-27 三菱電機株式会社 半導体装置
BR112014010665A2 (pt) 2011-11-01 2017-12-05 Pentair Water Pool & Spa Inc sistema e processo de bloqueio de vazão
US11329589B2 (en) * 2012-03-28 2022-05-10 Joy Global Underground Mining Llc Ground fault detection methods on variable frequency drive systems
JP5505449B2 (ja) * 2012-04-06 2014-05-28 株式会社デンソー 多相回転機の制御装置
US9160161B2 (en) 2012-05-04 2015-10-13 Eaton Corporation System and method for ground fault detection and protection in adjustable speed drives
US9046560B2 (en) 2012-06-04 2015-06-02 Eaton Corporation System and method for high resistance ground fault detection and protection in power distribution systems
KR101930696B1 (ko) * 2012-08-24 2018-12-19 현대모비스 주식회사 스위칭 소자 쇼트 검출 장치 및 방법
US9885360B2 (en) 2012-10-25 2018-02-06 Pentair Flow Technologies, Llc Battery backup sump pump systems and methods
TWI453432B (zh) * 2012-11-28 2014-09-21 Simplo Technology Co Ltd 絕緣偵測電路及其方法
WO2014145867A1 (en) * 2013-03-15 2014-09-18 Pentair Flow Technologies, Llc Method of controlling a pump and motor
US20150102824A1 (en) * 2013-10-11 2015-04-16 General Electric Company Locating loose connections in an electrical circuit
US9806641B2 (en) * 2014-11-06 2017-10-31 Rockwell Automation Technologies, Inc. Detection of electric motor short circuits
US10473097B2 (en) 2015-09-02 2019-11-12 Tigerflow Systems, Llc System and method for speed control of variable speed pumping systems
EP3353882A4 (en) * 2015-09-22 2019-05-08 Services Petroliers Schlumberger FAULT TOLERANT INVERTER OR CONTROLLED RECTIFIER SYSTEM
US11133664B2 (en) 2016-01-22 2021-09-28 Halliburton Energy Services, Inc. Solid state protection circuits for a converter circuit
US10823516B2 (en) * 2016-03-14 2020-11-03 Joseph F. Walsh Ground-detecting descaler
WO2017208051A1 (en) * 2016-05-29 2017-12-07 Aplisens S.A. Method for diagnosing technical condition of submersible pump unit
US10132850B2 (en) 2016-08-10 2018-11-20 General Electric Company Electric ground fault detection system and method
SE542648C2 (en) * 2016-10-13 2020-06-23 Husqvarna Ab Integrated residual current device for handheld wet tools
CN107121630A (zh) * 2017-05-25 2017-09-01 合肥巨动力系统有限公司 一种电机控制系统的主动短路保护电路的自检方法及装置
JP6833638B2 (ja) * 2017-07-21 2021-02-24 株式会社東芝 電動機用インバータ回路の評価装置および評価方法
US10663531B2 (en) * 2017-10-11 2020-05-26 Cirrus Logic, Inc. Digital short detection method of class D amplifier
WO2019176299A1 (ja) * 2018-03-13 2019-09-19 日立オートモティブシステムズ株式会社 車両搭載機器の制御装置
DE102018006355B4 (de) * 2018-08-11 2020-06-10 Diehl Ako Stiftung & Co. Kg Verfahren zum Erkennen eines Motorphasenfehlers an einer Motoranordnung und Antriebsschaltung zum Antreiben eines elektronisch kommutierten Motors
DE102019121793A1 (de) * 2018-08-14 2020-02-20 Steering Solutions Ip Holding Corporation Stromeingangsschaltung mit verbessertem verpolungsschutz zur isolierung der versorgung bei kurzschlussbedingungen und zur verminderung des neustarts des mikrocontrollers aus dem abschaltzustand nach einem fehler
US10992147B2 (en) * 2019-09-25 2021-04-27 GM Global Technology Operations LLC Diagnostic method for electric propulsion system with reconfigurable battery system
CN113471942B (zh) * 2020-03-30 2025-04-11 台达电子企业管理（上海）有限公司 具有保护电路的电源装置
US12305650B2 (en) 2020-07-24 2025-05-20 Eaton Intelligent Power Limited Control system for a fluid management system
US20240429789A1 (en) * 2021-09-21 2024-12-26 Zparq Ab A method for electric leakage safety of an electric motor, and a protection system

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972708A (en) * 1956-10-05 1961-02-21 Edward J Schaefer Protective means for submersible pump-motors
US3283236A (en) * 1965-09-30 1966-11-01 Borg Warner Control system for power units such as electric motors and the like
US3417290A (en) * 1966-10-24 1968-12-17 Craddock Mike Oil well pumping unit control circuit
US3577052A (en) * 1968-10-17 1971-05-04 David Elvis Bauer Ac motor control system with synchronous speed change
US4021700A (en) * 1975-06-04 1977-05-03 Borg-Warner Corporation Digital logic control system for three-phase submersible pump motor
US4000446A (en) * 1975-06-04 1976-12-28 Borg-Warner Corporation Overload protection system for three-phase submersible pump motor
US3976919A (en) * 1975-06-04 1976-08-24 Borg-Warner Corporation Phase sequence detector for three-phase AC power system
CH613569A5 (enExample) * 1977-03-01 1979-09-28 Bbc Brown Boveri & Cie
US4200829A (en) * 1978-07-12 1980-04-29 General Electric Company Circuit for protecting induction motors
US4242712A (en) * 1978-10-12 1980-12-30 Lockwood Corporation Over-power safety device for motor driven system
US4284943A (en) * 1979-02-13 1981-08-18 Electric Machinery Mfg. Company Apparatus and method for controlling the speed of an induction motor in a closed-loop system
NL8202259A (nl) * 1982-06-04 1984-01-02 Philips Nv Voedingsstelsel omvattende een wisselspanning-voedingsbron, een belasting en een verbindingskabel tussen bron en belasting.
US4618810A (en) * 1983-02-04 1986-10-21 Emerson Electric Company Variable speed AC motor control system
DE3436776A1 (de) * 1984-10-06 1986-04-10 Teldix Gmbh, 6900 Heidelberg Ueberwachungseinrichtung insbesondere fuer einen kollektorlosen gleichstrommotor
US4716487A (en) * 1986-05-05 1987-12-29 Automeg, Inc. Apparatus for monitoring motor winding leakage
JP2714449B2 (ja) * 1989-08-08 1998-02-16 株式会社日立製作所 可変速ポンプシステム
US5386183A (en) * 1990-01-03 1995-01-31 Siemens Energy & Automation, Inc. Method and apparatus for sensing a ground fault in a motor control system
US5350992A (en) * 1991-09-17 1994-09-27 Micro-Trak Systems, Inc. Motor control circuit
JP2903863B2 (ja) * 1992-05-29 1999-06-14 三菱電機株式会社 インバータ装置
DE4329382A1 (de) * 1993-09-01 1995-03-02 Abb Management Ag Verfahren und Vorrichtung zur Erfassung von Erdfehlern auf den Leitern einer elektrischen Maschine
JPH07239359A (ja) * 1994-02-25 1995-09-12 Mitsubishi Electric Corp インバータ装置及びその運転方法
US5580221A (en) * 1994-10-05 1996-12-03 Franklin Electric Co., Inc. Motor drive circuit for pressure control of a pumping system

Also Published As

Publication number Publication date
US5945802A (en) 1999-08-31
EP0915348A2 (en) 1999-05-12
DE69833097D1 (de) 2006-03-30
DE69833097T2 (de) 2006-08-31
EP0915348A3 (en) 2001-12-12
EP0915348B1 (en) 2006-01-04
JPH11235047A (ja) 1999-08-27

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