EP1326485A2 - Ballast pour une lampe, et procédé de commande dudit ballast - Google Patents
Ballast pour une lampe, et procédé de commande dudit ballast Download PDFInfo
- Publication number
- EP1326485A2 EP1326485A2 EP02027138A EP02027138A EP1326485A2 EP 1326485 A2 EP1326485 A2 EP 1326485A2 EP 02027138 A EP02027138 A EP 02027138A EP 02027138 A EP02027138 A EP 02027138A EP 1326485 A2 EP1326485 A2 EP 1326485A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ballast
- frequency
- switch
- lamp
- frequencies
- 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.)
- Withdrawn
Links
Images
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
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
- H05B41/3925—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations by frequency variation
-
- 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
- H05B41/36—Controlling
- H05B41/38—Controlling the intensity of light
- H05B41/39—Controlling the intensity of light continuously
- H05B41/392—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor
- H05B41/3921—Controlling the intensity of light continuously using semiconductor devices, e.g. thyristor with possibility of light intensity variations
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S315/00—Electric lamp and discharge devices: systems
- Y10S315/07—Starting and control circuits for gas discharge lamp using transistors
Definitions
- the present invention relates to a ballast for a lamp with a Inverter, which comprises at least one switch, and a drive circuit to alternately open and close the at least a switch and a method for operating such a ballast.
- the object of the present invention is therefore a ballast of the type mentioned at the beginning and the method mentioned at the beginning to operate a ballast such that abrupt changes in brightness of a connected Lamp can be avoided.
- the invention is based on the knowledge that the integration of the changing Lamp brightness not on a capacitor provided for this is carried out but by the sluggishness of human perception. A periodically fluctuating brightness of the lamp is not registered, if the fluctuation is above approx. 80 Hz. By switching between at least two different frequencies any perceptible brightness between the fixed discrete ones Values are generated.
- the control circuit is preferably designed to switch between the carry out different control frequencies with a switching frequency, which is chosen such that the one with the different drive frequencies correlated different lamp brightness from one human eye can no longer be resolved.
- the switching frequency is therefore preferably at least 60 Hz, in particular at least 80 Hz.
- a grid rectifier can be connected upstream of the inverter an AC voltage network can be fed that has a network frequency, the switching frequency being synchronized with the mains frequency. If namely in the ballast Rippel with the mains frequency or multiples of this can occur with unsynchronized control at low frequencies Beats come that can be so low frequency that they in turn can be perceived by the human eye.
- the mains frequency is 50 Hz or 60 Hz and the corresponding one Switching frequencies are then multiples of 50 Hz, in particular 100 Hz, or multiples of 60 Hz, in particular 120 Hz.
- the network frequency is a multiple of the switching frequency is.
- a switching frequency is chosen that is technically easy to implement and at the same time larger than that of humans Is still perceptible flicker frequency.
- Figure 1 shows a ballast for operating a lamp La.
- a first and a second switch S1; S2 are arranged between the supply voltage V CC and ground.
- the center between the two switches S1, S2, which are preferably implemented as transistors, is connected via a coupling capacitor C K to the output circuit, which comprises an inductance L and a capacitor C.
- Opening and closing switches S1; S2 is carried out by a control circuit 10, which is designed to switch S1; S2 can be controlled alternately with at least two different frequencies.
- the switching frequency between the two control frequencies is at least 60 Hz, preferably at least 80 Hz.
- FIG. 2 shows the time profile of the power P L converted in the lamp, which is correlated with the brightness emitted by the lamp, over the frequency ⁇ .
- the frequency ⁇ is, for example, between 25 kHz and 125 kHz.
- a first frequency ⁇ a is correlated with a first lamp power P a
- a second frequency ⁇ b ' which is greater than ⁇ a is correlated with a second lamp power P b which is less than the lamp power P a .
- ⁇ a and ⁇ b are two discrete successive drive frequencies that can be provided on the drive circuit 10. A direct switching back and forth between the lamp power P a and the lamp power P b as part of a regulation would lead to brightness jumps that can be perceived by a human eye.
- FIG. 3 first shows the time course during operation of the ballast either with the lamp power P a or the lamp power P b , the line frequency of the voltage network from which the ballast is operated being reflected in the form of ripples.
- the ballast is for a time t a to the lamp power P a, during a time period t b with the lamp power P b operated.
- the switching between the lamp power P a and the lamp power P b is synchronized with the ripples, the switching not necessarily having to take place at the respective maxima.
- the hatched areas in FIG. 3 show the course of the lamp power in a ballast according to the invention.
- the switching frequency between the lamp power P a and the lamp power P b is selected so that it is above the flicker frequency perceivable by a human eye.
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10200047 | 2002-01-02 | ||
DE10200047A DE10200047A1 (de) | 2002-01-02 | 2002-01-02 | Vorschaltgerät für eine Lampe und Verfahren zum betreiben eines Vorschaltgeräts für eine Lampe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1326485A2 true EP1326485A2 (fr) | 2003-07-09 |
EP1326485A3 EP1326485A3 (fr) | 2005-01-12 |
Family
ID=7711451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02027138A Withdrawn EP1326485A3 (fr) | 2002-01-02 | 2002-12-04 | Ballast pour une lampe, et procédé de commande dudit ballast |
Country Status (5)
Country | Link |
---|---|
US (2) | US20040012345A1 (fr) |
EP (1) | EP1326485A3 (fr) |
CN (1) | CN1430461A (fr) |
CA (1) | CA2415509A1 (fr) |
DE (1) | DE10200047A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007118808A1 (fr) * | 2006-04-13 | 2007-10-25 | Osram Gesellschaft mit beschränkter Haftung | Circuit et procédé de fonctionnement d'une lampe à décharge |
WO2009142996A2 (fr) * | 2008-05-23 | 2009-11-26 | Osram Sylvania, Inc. | Commande bimodale de régulation de puissance d’une lampe aux halogénures métalliques et en céramique |
US8378585B2 (en) | 2008-05-23 | 2013-02-19 | Osram Sylvania Inc. | High frequency integrated HID lamp with run-up current |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10325872A1 (de) * | 2003-06-06 | 2004-12-23 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Ansteuerschaltung für den Betrieb mindestens einer Lampe in einem dazugehörigen Lastkreis |
DE102005017323A1 (de) * | 2005-04-14 | 2006-10-19 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Elektronisches Vorschaltgerät für eine Lampe |
TWI354439B (en) * | 2007-06-04 | 2011-12-11 | Holtek Semiconductor Inc | Ac signal producer and method thereof |
JP5595285B2 (ja) * | 2008-01-24 | 2014-09-24 | オスラム ゲーエムベーハー | 少なくとも1つの光源を駆動制御するための電子安定器および方法 |
KR101094296B1 (ko) | 2010-05-31 | 2011-12-19 | 삼성모바일디스플레이주식회사 | 표시장치 및 그 제조 방법 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5365151A (en) * | 1991-07-12 | 1994-11-15 | Tridonic Bauelemente Gmbh | Gas discharge lamp ballast circuit with frequency modulated pulse control |
US5585699A (en) * | 1994-11-18 | 1996-12-17 | Hilite Lighting And Electronics Ltd. | Control circuit for fluorescent lamps |
WO1998036623A1 (fr) * | 1997-02-13 | 1998-08-20 | Koninklijke Philips Electronics N.V. | Agencement de circuit |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5365152A (en) * | 1991-09-09 | 1994-11-15 | Matsushita Electric Industrial Co. Ltd. | Apparatus for controlling the power to a discharge-lamp |
JP3244859B2 (ja) * | 1993-04-12 | 2002-01-07 | 池田デンソー株式会社 | 放電灯点灯装置 |
US5381076A (en) * | 1993-10-18 | 1995-01-10 | General Electric Company | Metal halide electronic ballast |
US5426350A (en) * | 1993-11-18 | 1995-06-20 | Electric Power Research Institute, Inc. | High frequency transformerless electronics ballast using double inductor-capacitor resonant power conversion for gas discharge lamps |
US5677602A (en) * | 1995-05-26 | 1997-10-14 | Paul; Jon D. | High efficiency electronic ballast for high intensity discharge lamps |
US5696431A (en) * | 1996-05-03 | 1997-12-09 | Philips Electronics North America Corporation | Inverter driving scheme for capacitive mode protection |
JP3829507B2 (ja) * | 1997-12-12 | 2006-10-04 | 松下電工株式会社 | 電子バラストおよびhidランプ制御回路 |
US6392364B1 (en) * | 1999-06-21 | 2002-05-21 | Denso Corporation | High voltage discharge lamp apparatus for vehicles |
KR100697726B1 (ko) * | 2000-02-10 | 2007-03-21 | 페어차일드코리아반도체 주식회사 | 전자식 안정기를 구비한 램프 시스템 |
US6380694B1 (en) * | 2000-09-22 | 2002-04-30 | Matsushita Electric Works R & D Laboratory | Variable structure circuit topology for HID lamp electronic ballasts |
EP1227706B1 (fr) * | 2001-01-24 | 2012-11-28 | City University of Hong Kong | Designs de circuits et techniques de contrôle nouveaux pour ballasts électroniques haute fréquence pour lampes à forte décharge |
US6577078B2 (en) * | 2001-09-26 | 2003-06-10 | Koninklijke Philips Electronics N.V. | Electronic ballast with lamp run-up current regulation |
-
2002
- 2002-01-02 DE DE10200047A patent/DE10200047A1/de not_active Withdrawn
- 2002-12-04 EP EP02027138A patent/EP1326485A3/fr not_active Withdrawn
- 2002-12-17 US US10/320,537 patent/US20040012345A1/en not_active Abandoned
- 2002-12-30 CA CA002415509A patent/CA2415509A1/fr not_active Abandoned
-
2003
- 2003-01-02 CN CN03100904A patent/CN1430461A/zh active Pending
- 2003-01-02 US US10/334,790 patent/US6768271B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5365151A (en) * | 1991-07-12 | 1994-11-15 | Tridonic Bauelemente Gmbh | Gas discharge lamp ballast circuit with frequency modulated pulse control |
US5585699A (en) * | 1994-11-18 | 1996-12-17 | Hilite Lighting And Electronics Ltd. | Control circuit for fluorescent lamps |
WO1998036623A1 (fr) * | 1997-02-13 | 1998-08-20 | Koninklijke Philips Electronics N.V. | Agencement de circuit |
Non-Patent Citations (1)
Title |
---|
WU T-F ET AL: "AN ELECTRONIC DIMMING BALLAST WITH BIFREQUENCY AND FUZZY LOGIC CONTROL" IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, IEEE INC. NEW YORK, US, Bd. 36, Nr. 5, September 2000 (2000-09), Seiten 1308-1317, XP001142932 ISSN: 0093-9994 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007118808A1 (fr) * | 2006-04-13 | 2007-10-25 | Osram Gesellschaft mit beschränkter Haftung | Circuit et procédé de fonctionnement d'une lampe à décharge |
US8098020B2 (en) | 2006-04-13 | 2012-01-17 | Osram Ag | Circuit arrangement and method for operating a discharge lamp |
WO2009142996A2 (fr) * | 2008-05-23 | 2009-11-26 | Osram Sylvania, Inc. | Commande bimodale de régulation de puissance d’une lampe aux halogénures métalliques et en céramique |
WO2009142996A3 (fr) * | 2008-05-23 | 2010-01-28 | Osram Sylvania, Inc. | Commande bimodale de régulation de puissance d’une lampe aux halogénures métalliques et en céramique |
US7863827B2 (en) | 2008-05-23 | 2011-01-04 | Osram Sylvania Inc. | Ceramic metal halide lamp bi-modal power regulation control |
US8378585B2 (en) | 2008-05-23 | 2013-02-19 | Osram Sylvania Inc. | High frequency integrated HID lamp with run-up current |
Also Published As
Publication number | Publication date |
---|---|
DE10200047A1 (de) | 2003-07-17 |
US6768271B2 (en) | 2004-07-27 |
CA2415509A1 (fr) | 2003-07-02 |
EP1326485A3 (fr) | 2005-01-12 |
CN1430461A (zh) | 2003-07-16 |
US20040012345A1 (en) | 2004-01-22 |
US20030137256A1 (en) | 2003-07-24 |
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Legal Events
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AK | Designated contracting states |
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AX | Request for extension of the european patent |
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AX | Request for extension of the european patent |
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AKX | Designation fees paid | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: 8566 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20050701 |