WO2000024104A3 - Ground fault protection circuit - Google Patents

Ground fault protection circuit Download PDF

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Publication number
WO2000024104A3
WO2000024104A3 PCT/US1999/022377 US9922377W WO0024104A3 WO 2000024104 A3 WO2000024104 A3 WO 2000024104A3 US 9922377 W US9922377 W US 9922377W WO 0024104 A3 WO0024104 A3 WO 0024104A3
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
ground fault
protection circuit
fault protection
coupled
Prior art date
Application number
PCT/US1999/022377
Other languages
French (fr)
Other versions
WO2000024104A2 (en
Inventor
Mihail S Moisin
Original Assignee
Electro Mag Int Inc
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 Electro Mag Int Inc filed Critical Electro Mag Int Inc
Priority to CA002346886A priority Critical patent/CA2346886A1/en
Priority to EP99948478A priority patent/EP1145400A3/en
Priority to AU61646/99A priority patent/AU6164699A/en
Publication of WO2000024104A2 publication Critical patent/WO2000024104A2/en
Publication of WO2000024104A3 publication Critical patent/WO2000024104A3/en

Links

Classifications

    • 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
    • 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
    • H02M1/38—Means for preventing simultaneous conduction of switches
    • 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
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/425—Arrangements for improving power factor of AC input using a single converter stage both for correction of AC input power factor and generation of a high frequency AC output voltage
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
    • H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
    • H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
    • H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
    • H05B41/2856—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit conditions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

A ground fault detection circuit is coupled to an AC circuit and to earth ground for detecting a flow of energy from the AC circuit to earth ground through a path external to the AC circuit. In one embodiment, the ground fault circuit includes a detection circuit coupled to a negative rail of an inverter, which forms part of the AC circuit, and a detection control circuit coupled to the inverter for disabling the AC circuit.
PCT/US1999/022377 1998-10-16 1999-09-28 Ground fault protection circuit WO2000024104A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002346886A CA2346886A1 (en) 1998-10-16 1999-09-28 Ground fault protection circuit
EP99948478A EP1145400A3 (en) 1998-10-16 1999-09-28 Ground fault protection circuit
AU61646/99A AU6164699A (en) 1998-10-16 1999-09-28 Ground fault protection circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/173,981 US6188553B1 (en) 1997-10-10 1998-10-16 Ground fault protection circuit
US09/173,981 1998-10-16

Publications (2)

Publication Number Publication Date
WO2000024104A2 WO2000024104A2 (en) 2000-04-27
WO2000024104A3 true WO2000024104A3 (en) 2002-08-29

Family

ID=22634326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/022377 WO2000024104A2 (en) 1998-10-16 1999-09-28 Ground fault protection circuit

Country Status (5)

Country Link
US (1) US6188553B1 (en)
EP (1) EP1145400A3 (en)
AU (1) AU6164699A (en)
CA (1) CA2346886A1 (en)
WO (1) WO2000024104A2 (en)

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EP1097613B1 (en) * 1998-03-27 2003-03-05 Gapwoo Hwang Electronic ballast for high intensity discharge lamp
JP2002015892A (en) * 2000-06-28 2002-01-18 Matsushita Electric Ind Co Ltd Discharge lamp lighting device
US6936977B2 (en) * 2002-01-23 2005-08-30 Mihail S. Moisin Ballast circuit having enhanced output isolation transformer circuit with high power factor
US6674246B2 (en) 2002-01-23 2004-01-06 Mihail S. Moisin Ballast circuit having enhanced output isolation transformer circuit
DE10231989B3 (en) * 2002-07-15 2004-04-08 Wurdack, Stefan, Dr. Device for determining surface resistance of a probe, especially a semiconductor wafer, measures conductance with eddy currents and exact position of the wafer
DE10235217A1 (en) * 2002-08-01 2004-02-19 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Circuit device for operating lamp, especially low pressure discharge lamp has current limiter that can drive control electrode of at least one transistor switching unit in inverter to limit current
US7099132B2 (en) * 2003-03-19 2006-08-29 Moisin Mihail S Circuit having power management
US7642728B2 (en) * 2003-03-19 2010-01-05 Moisin Mihail S Circuit having EMI and current leakage to ground control circuit
US7061187B2 (en) * 2003-03-19 2006-06-13 Moisin Mihail S Circuit having clamped global feedback for linear load current
US6954036B2 (en) * 2003-03-19 2005-10-11 Moisin Mihail S Circuit having global feedback for promoting linear operation
US7187139B2 (en) 2003-09-09 2007-03-06 Microsemi Corporation Split phase inverters for CCFL backlight system
ATE458382T1 (en) * 2003-10-06 2010-03-15 Microsemi Corp POWER SHARING SCHEMATIC AND DEVICE FOR MULTIPLE CCF LAMP OPERATION
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US7468722B2 (en) 2004-02-09 2008-12-23 Microsemi Corporation Method and apparatus to control display brightness with ambient light correction
US7112929B2 (en) 2004-04-01 2006-09-26 Microsemi Corporation Full-bridge and half-bridge compatible driver timing schedule for direct drive backlight system
US7755595B2 (en) * 2004-06-07 2010-07-13 Microsemi Corporation Dual-slope brightness control for transflective displays
US7061183B1 (en) 2005-03-31 2006-06-13 Microsemi Corporation Zigzag topology for balancing current among paralleled gas discharge lamps
US7173382B2 (en) 2005-03-31 2007-02-06 Microsemi Corporation Nested balancing topology for balancing current among multiple lamps
US20060238146A1 (en) * 2005-04-25 2006-10-26 Moisin Mihail S Methods and apparatus to enhance operation of fluorescent lamps
US7313006B2 (en) * 2005-05-13 2007-12-25 Microsemi Corporation Shoot-through prevention circuit for passive level-shifter
TWI283148B (en) * 2005-11-18 2007-06-21 Hon Hai Prec Ind Co Ltd Multi-lamp driving system and abnormality detecting circuit thereof
US7569998B2 (en) 2006-07-06 2009-08-04 Microsemi Corporation Striking and open lamp regulation for CCFL controller
US7755296B2 (en) * 2007-03-19 2010-07-13 System General Corp. Resonant inverter
US7936542B2 (en) * 2007-03-27 2011-05-03 Siemens Energy, Inc. Electronic ground detection apparatus for use on ground detector ring of power generating system
TW200948201A (en) 2008-02-05 2009-11-16 Microsemi Corp Arrangement suitable for driving floating CCFL based backlight
US8093839B2 (en) 2008-11-20 2012-01-10 Microsemi Corporation Method and apparatus for driving CCFL at low burst duty cycle rates
US9030119B2 (en) 2010-07-19 2015-05-12 Microsemi Corporation LED string driver arrangement with non-dissipative current balancer
US9255958B2 (en) * 2011-03-24 2016-02-09 Toshiba Mitsubishi-Electric Industrial Systems Corporation Ground fault detection circuit
CN103477712B (en) 2011-05-03 2015-04-08 美高森美公司 High efficiency LED driving method
US8754581B2 (en) 2011-05-03 2014-06-17 Microsemi Corporation High efficiency LED driving method for odd number of LED strings
CN104868436A (en) * 2015-05-21 2015-08-26 浙江大学 Connecting protection system for seabed observational network
JP6100877B1 (en) * 2015-12-07 2017-03-22 レノボ・シンガポール・プライベート・リミテッド Electronics

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Also Published As

Publication number Publication date
US6188553B1 (en) 2001-02-13
WO2000024104A2 (en) 2000-04-27
CA2346886A1 (en) 2000-04-27
EP1145400A2 (en) 2001-10-17
EP1145400A3 (en) 2002-11-27
AU6164699A (en) 2000-05-08

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