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1. WO2000040058 - DIMMABLE ELECTRONIC BALLAST WITH SINGLE STAGE FEEDBACK INVERTER

Publication Number WO/2000/040058
Publication Date 06.07.2000
International Application No. PCT/EP1999/010195
International Filing Date 17.12.1999
IPC
H05B 41/28 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
H05B 41/282 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
282with semiconductor devices
H05B 41/298 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
295with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
298Arrangements for protecting lamps or circuits against abnormal operating conditions
H05B 41/392 2006.01
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
36Controlling
38Controlling the intensity of light
39continuously
392using semiconductor devices, e.g. thyristor
CPC
H05B 41/28
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
H05B 41/2828
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
282with semiconductor devices
2825by means of a bridge converter in the final stage
2828using control circuits for the switching elements
H05B 41/2986
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
26in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
28using static converters
295with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps
298Arrangements for protecting lamps or circuits against abnormal operating conditions
2981for protecting the circuit against abnormal operating conditions
2986against internal abnormal circuit conditions
H05B 41/3925
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
41Circuit arrangements or apparatus for igniting or operating discharge lamps
14Circuit arrangements
36Controlling
38Controlling the intensity of light
39continuously
392using semiconductor devices, e.g. thyristor
3921with possibility of light intensity variations
3925by frequency variation
Y02B 20/186
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
20Energy efficient lighting technologies
16Gas discharge lamps, e.g. fluorescent lamps, high intensity discharge lamps [HID] or molecular radiators
18Low pressure and fluorescent lamps
183Specially adapted circuits
186Controlled bridges
Applicants
  • KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL/NL]; Groenewoudseweg 1 NL-5621 BA Eindhoven, NL
Inventors
  • JANCZAK, Jerzy; NL
Agents
  • BOSMA, Rudolphus, H., A.; Internationaal Octrooibureau B.V. Prof. Holstlaan 6 NL-5656 AA Eindhoven, NL
Priority Data
09/222,40529.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DIMMABLE ELECTRONIC BALLAST WITH SINGLE STAGE FEEDBACK INVERTER
(FR) BALLAST ELECTRONIQUE POUR INTENSITE VARIABLE COMPORTANT UN SEUL ETAGE DE CONVERTISSEUR A REACTION
Abstract
(EN)
A high frequency dimmable electronic ballast comprising a single stage feedback inverter and power factor controller which regulates the power delivered to a load by the inverter at low dim levels such that sufficient lamp crest factor is maintained for load changes from 100 % to 10 %. Sufficient load current crest factors are obtained for variable load (dimming) by operating the ballast in a closed loop configuration, whereby the average value of the load current and/or power is measured and regulated. In one aspect of the present invention, an electronic ballast comprises a single stage feedback inverter for supplying high frequency power to a load in response to driving signals; current sensing means for sensing current flowing in the load due to the supplied load power; voltage detection means for detecting a peak voltage of said load due to the supplied load power; dimming means for generating an illumination signal corresponding to a desired power level of the load; and a controller connected to the single stage feedback inverter and dimming means, for generating the driving signals to cause the inverter to generate the desired power level to the load, whereby the controller processes the sensed load current and the detected peak load voltage to maintain a sufficient lamp crest factor at the desired load power level.
(FR)
La présente invention concerne un ballast électronique haute fréquence pour intensité variable comportant un seul étage de convertisseur à réaction et un régulateur de facteur de puissance qui régule la puissance que le convertisseur apporte à une charge pour des niveaux d'intensité atténuée tels qu'on conserve un facteur de crête de la lampe suffisant pour des variations de la charge comprises entre 100 % et 10 %. Pour arriver à ces facteurs de crête de courant de charge suffisant pour une charge variable (atténuation), on fait fonctionner le ballast en circuit fermé, ce qui permet de mesurer et de réguler la valeur moyenne du courant et/ou de la puissance de la charge. Selon un aspect de l'invention, le ballast électronique comporte un étage unique de convertisseur à réaction capable de fournir à une charge un courant électrique haute fréquence en réaction à des signaux de commande. Le ballast comporte également, d'une part des détecteurs d'intensité vérifiant l'intensité circulant dans la charge en raison du courant électrique de charge fourni, et d'autre part des détecteurs de tension vérifiant la tension de crête de la charge en raison du courant électrique de charge fourni. Le ballast comporte enfin, non seulement un atténuateur produisant un signal d'éclairage correspondant à un niveau de puissance attendu pour la charge, mais aussi un régulateur, qui est connecté à l'étage unique du convertisseur à réaction et à l'atténuateur, et qui génère les signaux de commande amenant le convertisseur à donner à la charge le niveau de puissance attendu. En l'occurrence, le régulateur traite l'intensité de charge détectée et la tension de charge en crête détectée de façon à entretenir un facteur de crête de la lampe suffisant pour le niveau de puissance attendu pour la charge.
Also published as
Latest bibliographic data on file with the International Bureau