WO2006115791A3 - Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies - Google Patents

Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies Download PDF

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Publication number
WO2006115791A3
WO2006115791A3 PCT/US2006/013722 US2006013722W WO2006115791A3 WO 2006115791 A3 WO2006115791 A3 WO 2006115791A3 US 2006013722 W US2006013722 W US 2006013722W WO 2006115791 A3 WO2006115791 A3 WO 2006115791A3
Authority
WO
WIPO (PCT)
Prior art keywords
power
lamp
control circuit
constant power
voltage
Prior art date
Application number
PCT/US2006/013722
Other languages
French (fr)
Other versions
WO2006115791A2 (en
Inventor
Fazle S Quazi
Original Assignee
Energy Conservation Technologi
Fazle S Quazi
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 Energy Conservation Technologi, Fazle S Quazi filed Critical Energy Conservation Technologi
Priority to MX2007013162A priority Critical patent/MX2007013162A/en
Priority to CA002605610A priority patent/CA2605610A1/en
Priority to EP06749929A priority patent/EP1872626A2/en
Publication of WO2006115791A2 publication Critical patent/WO2006115791A2/en
Publication of WO2006115791A3 publication Critical patent/WO2006115791A3/en

Links

Classifications

    • 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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

The control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies maintains constant power in a variable load. This constant power control circuit provides a closed loop constant power management process for gas discharge lamps by adding a scaled lamp voltage to a scaled voltage that is equivalent to the measured lamp current. This sum is then fed to a comparator for comparison with a fixed reference voltage. If there is a difference between the sum and the reference voltage, the comparator sends this information to an error amplifier of the gas discharger lamp power control circuit for corrective measures and closed loop control of gas discharge lamp power. Since the sum always must attain the same value as determined by reference voltage, when the lamp voltage increases from its nominal or initial value, the lamp current is decreased by a corresponding ratio to maintain a constant power in the gas discharge lamp.
PCT/US2006/013722 2005-04-21 2006-04-12 Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies WO2006115791A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
MX2007013162A MX2007013162A (en) 2005-04-21 2006-04-12 Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies.
CA002605610A CA2605610A1 (en) 2005-04-21 2006-04-12 Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies
EP06749929A EP1872626A2 (en) 2005-04-21 2006-04-12 Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/111,005 US7199528B2 (en) 2005-04-21 2005-04-21 Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies
US11/111,005 2005-04-21

Publications (2)

Publication Number Publication Date
WO2006115791A2 WO2006115791A2 (en) 2006-11-02
WO2006115791A3 true WO2006115791A3 (en) 2007-02-15

Family

ID=37186164

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/013722 WO2006115791A2 (en) 2005-04-21 2006-04-12 Control circuit for maintaining constant power in power factor corrected electronic ballasts and power supplies

Country Status (5)

Country Link
US (1) US7199528B2 (en)
EP (1) EP1872626A2 (en)
CA (1) CA2605610A1 (en)
MX (1) MX2007013162A (en)
WO (1) WO2006115791A2 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7579224B2 (en) * 2005-01-21 2009-08-25 Semiconductor Energy Laboratory Co., Ltd. Method for manufacturing a thin film semiconductor device
US7508142B2 (en) * 2006-07-18 2009-03-24 International Rectifier Corporation Ballast control circuit for use with CCFL and EEFL lamps
TWI402882B (en) * 2007-03-14 2013-07-21 Jenn Wei Mii Light illuminating element
US9108263B2 (en) * 2007-04-30 2015-08-18 Illinois Tool Works Inc. Welding power source with automatic variable high frequency
GB2452261A (en) * 2007-08-29 2009-03-04 Cambridge Semiconductor Ltd Discharge lamp controller with SEPIC and push-pull stage
US7944156B2 (en) * 2008-03-13 2011-05-17 Energy Conservation Technologies, Inc. Electronic ballast for high intensity discharge lamps
JP2010257659A (en) * 2009-04-22 2010-11-11 Panasonic Electric Works Co Ltd High-pressure discharge lamp-lighting device and lighting fixture using the same
TWI383282B (en) * 2009-04-30 2013-01-21 Ind Tech Res Inst Constant power control apparatus and a controlling method thereof
DE102009019625B4 (en) * 2009-04-30 2014-05-15 Osram Gmbh A method of determining a type of gas discharge lamp and electronic ballast for operating at least two different types of gas discharge lamps
KR101861728B1 (en) * 2012-02-03 2018-05-30 삼성전자주식회사 DC power supply apparatus
TWI675279B (en) 2018-06-04 2019-10-21 群光電能科技股份有限公司 Constant power protection circuit and constant power protection method
CN111596115B (en) 2019-02-01 2022-09-13 群光电能科技股份有限公司 Method for measuring output current by resistance compensation and conversion circuit thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034489A (en) * 1989-11-09 1991-07-23 General Electric Company Silicone copolymers having tetraorganodisilyloxy groups and intermediates thereof
US5907223A (en) * 1995-12-08 1999-05-25 Philips Electronics North America Corporation Two-frequency electronic ballast system having an isolated PFC converter
US6359395B1 (en) * 2000-12-06 2002-03-19 Fazle S. Quazi Control circuit for power factor corrected electronic ballasts and power supplies
US20060103326A1 (en) * 2003-03-04 2006-05-18 Intercoastal Llc Variable frequency half bridge driver

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5134355A (en) * 1990-12-31 1992-07-28 Texas Instruments Incorporated Power factor correction control for switch-mode power converters
US6034489A (en) * 1997-12-04 2000-03-07 Matsushita Electric Works R&D Laboratory, Inc. Electronic ballast circuit
US6680585B2 (en) * 2001-12-17 2004-01-20 Osram Sylvania Inc. Method and apparatus for modulating HID ballast operating frequency using DC bus ripple voltage
DE10355670B4 (en) * 2003-11-28 2005-12-08 Infineon Technologies Ag Method for driving a switch in a power factor correction circuit and drive circuit
KR101026248B1 (en) * 2004-09-21 2011-03-31 페어차일드코리아반도체 주식회사 Power Factor Correction Circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034489A (en) * 1989-11-09 1991-07-23 General Electric Company Silicone copolymers having tetraorganodisilyloxy groups and intermediates thereof
US5907223A (en) * 1995-12-08 1999-05-25 Philips Electronics North America Corporation Two-frequency electronic ballast system having an isolated PFC converter
US6359395B1 (en) * 2000-12-06 2002-03-19 Fazle S. Quazi Control circuit for power factor corrected electronic ballasts and power supplies
US20060103326A1 (en) * 2003-03-04 2006-05-18 Intercoastal Llc Variable frequency half bridge driver

Also Published As

Publication number Publication date
MX2007013162A (en) 2008-11-06
US7199528B2 (en) 2007-04-03
EP1872626A2 (en) 2008-01-02
WO2006115791A2 (en) 2006-11-02
CA2605610A1 (en) 2006-11-02
US20060238138A1 (en) 2006-10-26

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