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EP2296449B1 - PFC numérique parametrable - Google Patents

PFC numérique parametrable Download PDF

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Publication number
EP2296449B1
EP2296449B1 EP10182614.7A EP10182614A EP2296449B1 EP 2296449 B1 EP2296449 B1 EP 2296449B1 EP 10182614 A EP10182614 A EP 10182614A EP 2296449 B1 EP2296449 B1 EP 2296449B1
Authority
EP
European Patent Office
Prior art keywords
intermediate circuit
circuit voltage
controller
voltage regulator
operating device
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.)
Not-in-force
Application number
EP10182614.7A
Other languages
German (de)
English (en)
Other versions
EP2296449A1 (fr
Inventor
Günter MARENT
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.)
Tridonic GmbH and Co KG
Original Assignee
Tridonic GmbH and Co KG
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 Tridonic GmbH and Co KG filed Critical Tridonic GmbH and Co KG
Publication of EP2296449A1 publication Critical patent/EP2296449A1/fr
Application granted granted Critical
Publication of EP2296449B1 publication Critical patent/EP2296449B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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

Definitions

  • the present invention relates to control gear for lamps, in particular to an electronic ballast for at least one gas discharge lamp, in particular a fluorescent lamp.
  • the input from the prior art known electronic ballasts usually forms a connected to a power supply high-frequency filter, which is connected to a rectifier circuit.
  • the supply voltage directed by the rectifier circuit is supplied to a smoothing circuit for generating an intermediate circuit voltage (bus voltage).
  • An inverter fed with the intermediate circuit voltage finally generates a high-frequency alternating voltage, which is applied to the load circuit with the gas discharge lamp arranged therein.
  • the operation with the high-frequency AC voltage among other things, an increase in the luminous efficiency of the lamp result. By changing the operating frequency is also given the opportunity to operate the lamp in different levels of brightness (dimming).
  • the invention relates in particular to electronic ballasts with a smoothing circuit (English: Power Factor Correction, PFC), which the DC link voltage supplied to the inverter (Bus voltage).
  • PFC Power Factor Correction
  • the intermediate circuit voltage is regulated to a predetermined desired value, which is effected by a control circuit arranged within the smoothing circuit. This compares the current value of the intermediate circuit voltage as an actual value with an internally specified value and accordingly controls the energy consumption of the ballast and thus the value of the intermediate circuit voltage.
  • a control of the energy consumption is usually carried out with the aid of a controllable switching element.
  • the present invention has now set itself the task of extending the flexibility of the smoothing circuit (PFC) such that it is particularly fair in terms of requirements for a dimmable electronic ballast.
  • PFC smoothing circuit
  • an electronic ballast for at least one gas discharge lamp, in particular a fluorescent lamp.
  • the ballast is supplied with an input voltage and has a smoothing circuit controlled by an intermediate circuit voltage regulator for generating a regulated DC link voltage and an inverter stored with the DC link voltage. At least one lamp can be connected to the inverter.
  • the ballast external commands such as dimming
  • the DC link controller has properties that depend on the applied commands. Unlike the EP 1 189 490 A1 If necessary, the properties of the DC link controller are also changed within the same operating state (preheating, ignition, normal operation), in particular if an external dimming value specification changes.
  • the external commands are to be distinguished from the "internal" operating states, according to the EP 1 189 490 A1 different properties of the smoothing circuit cause.
  • a controller can be assigned to the DC link controller, to which the external commands can be supplied and which transmits to the DC link controller dependent setpoints with respect to the dynamic characteristics or other properties of the DC link regulation.
  • setpoints are, for example, values with regard to the DC link voltage, the time constants of the DC link controller and the permissible harmonics (THD).
  • a bidirectional communication can take place between the controller and the DC link controller in which the DC link controller transmits to the controller operating parameters of the smoothing circuit.
  • These operating parameters can be, for example, the type and / or the level of the be present input voltage and / or the DC link voltage.
  • the controller can be software controlled.
  • the controller can be connected to a memory in which a look-up table (LUT) is stored, which assigns corresponding setpoints for the smoothing circuit to defined external commands, for example dimming values.
  • LUT look-up table
  • the controller can also determine the setpoint values for the DC link control, depending on the external commands, via implemented functions.
  • the characteristics of the DC link regulator may also be adjustable depending on the type and / or the level of the input voltage of the electronic ballast.
  • an electronic ballast (EVG) is provided, in which the DC link controller receives set values for the operation of the smoothing circuit from a software-controlled controller.
  • EMG electronic ballast
  • the addition of the software-controlled controller thus allows a much more flexible design of the electronic ballast in comparison to the prior art, which brings advantages in particular with dimmable but also with non-dimmable ballasts.
  • the invention further relates to lights with such ballasts, to methods for operating an electronic ballast and a computer software program product to support such methods.
  • the invention also expressly relates to a microcontroller, as it can be used in such methods or ballasts.
  • FIG. 1 shown schematic representation of the electronic ballast according to the invention has been dispensed with the representation of the rectifier circuit, which is usually formed by a full-bridge rectifier.
  • the rectified mains voltage is supplied to the smoothing circuit, which is formed in the illustrated example by a step-up converter, which consists of an inductor L1, a diode D1, a storage capacitor C1 and a controlled by the DC link voltage regulator 1 switching elements in the form of a field effect transistor S1.
  • the intermediate circuit voltage V z provided by the smoothing circuit is supplied to a load circuit 2 containing the inverter 7 and the load circuit 8 with the gas discharge lamp LA arranged therein, which can be a fluorescent lamp.
  • the intermediate circuit voltage controller 1 which is designed as a digital controller in the example shown, will now be explained in more detail.
  • the current value of the intermediate circuit voltage V z is first detected via the input line 9.
  • the intermediate circuit voltage V z could also be detected indirectly, for example via the input voltage.
  • this analog value of the intermediate circuit voltage V z is converted by an analog-to-digital converter 2 into a digital value u (k).
  • the conversion takes place in each clock cycle of the intermediate circuit voltage regulator 1, wherein the clock is predetermined by a central clock in the form of a fixed-frequency oscillator 3.
  • the clock signals of the clock generator 3 are also supplied to a computing unit 5, which forms the core of the digital intermediate circuit voltage regulator 1, and to a control block 6 for driving the field-effect transistor S1.
  • the arithmetic unit 5 serves to calculate a control value y (k) in each clock cycle, which is transmitted to the control block 6. This converts the control value y (k) into a signal for operating the field-effect transistor S1 and thus controls its turn-on time.
  • the switching of the field effect transistor S1 takes place at a time at which as no current flows through the diode D1, since As a result, the switching losses are reduced.
  • a detection winding L2 which is inductively coupled to the inductance L1 of the boost converter. If the field effect transistor S1 blocks, then the current across the inductance L1 drops continuously until it reaches zero at a certain point in time.
  • control circuit L6 This point in time is detected by the control circuit L6 with the aid of the detection winding L2 and the field effect transistor S1 is switched through again while avoiding switching losses.
  • the control value y (k) specifies how long the field effect transistor S1 is turned on. By the duration of the power consumption of the ballast and thus the amount of the provided intermediate circuit voltage V z is determined. However, it is also possible to change its duty cycle as a function of the current control value y (k) instead of the switch-on time of the switch S1.
  • control value y (k) takes place not only on the basis of the current actual value u (k) of the intermediate circuit voltage V z , but also on the basis of the actual values and the control values in the previous clock cycles. Due to the digital properties, the control value y (k) - is calculated after a certain function, ideally after an infinite series. This infinite series consists of series members, which however in the present example are aborted after the third term in order to keep the effort for calculating the control value within an acceptable range.
  • the parameters used to weight the individual row members determine the dynamic behavior of the DC link voltage regulator 1. Accordingly, by using different parameter sets for the control block 6 in calculating the control value y (k), the DC link voltage regulator 1 adapted to different requirements.
  • the arithmetic unit 5 of the DC link regulator 1 is assigned an integrated controller 10, which communicates bidirectionally with the arithmetic unit 5 of the intermediate-time regulator 1 (see reference numeral 11).
  • the controller 10 is connected to a memory 12. Via a digital interface 13, the controller 10 can receive digital commands, such as dimming value specifications, but also, for example, send status messages or error messages to a connected digital bus, for example with the DALI standard.
  • digital commands such as dimming value specifications, but also, for example, send status messages or error messages to a connected digital bus, for example with the DALI standard.
  • the DC link controller 1, the controller 10 with the interface 13 and the memory 12 may be embodied for example as an ASIC.
  • the software-controlled controller 10 thus receives externally supplied digital commands via the interface 13. Furthermore, the arithmetic unit 5 of the DC link regulator 1 can report back status information or operating parameters to it. Typical examples of this feedback from the arithmetic unit 5 of the DC link regulator to the controller 10 are the type and / or level of the applied input voltage and the current value of the intermediate circuit voltage V z .
  • the DC link controller 1 is set via software depending on externally supplied commands, such as dimming values or feedback from DC link controllers.
  • the DC link regulator can be set to the output power of the load circuit containing the lamp.
  • the external default value is in this case, for example, a signal from a controller for the power of the output circuit.
  • This setting is particularly important for dimmable electronic ballasts, which may experience "static" load changes due to variable lamp power compared to non-dimmable electronic ballasts.
  • properties of the smoothing circuit it must be possible for properties of the smoothing circuit to be changed even in an operating phase, in particular during operation of the lamp in the ignited state.
  • T off is the switch-off duration of the switch S1 and corresponding to T on the switch-on of this switch.
  • the controller 10 may also determine these specifications via implemented functions.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
  • Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)

Claims (11)

  1. Circuit de lissage (L1, D1, C1, S1) pour générer une tension CC régulée du circuit intermédiaire (Vz) pour un circuit de charge (8) dans un dispositif opérationnel pour un moyen d'éclairage (LA), où le circuit de lissage comprend un régulateur de tension du circuit intermédiaire (1), et
    - le circuit de lissage (L1, D1, C1, S1) est fourni avec une tension d'entrée et contrôlé par le régulateur de tension du circuit intermédiaire (1), caractérisé en ce que
    - un contrôleur (10), pour lequel on peut fournir des commandes externes, est attribué au régulateur de tension du circuit intermédiaire (1), et
    - le régulateur de tension du circuit intermédiaire (1) a des propriétés de réglage qui dépendent des commandes externes présentes dans le contrôleur (10).
  2. Dispositif opérationnel pour moyen d'éclairage, en particulier un ballast électronique pour au moins une lampe à gaz de décharge, en particulier une lampe fluorescente, avec un circuit de lissage (L1, D1, C1, S1), alimenté avec une tension d'entrée et contrôlé par un régulateur de tension du circuit intermédiaire (1), selon la revendication 1 pour générer une tension CC régulée du circuit intermédiaire (Vz) ainsi qu'un inverseur de puissance (7), chargé avec la tension CC du circuit intermédiaire (Vz), avec un circuit de charge (8) connecté à la sortie de ce dernier et sur lequel au moins un moyen d'éclairage (LA) peut être utilisé.
  3. Dispositif opérationnel selon la revendication 2, où le contrôleur (10) transmet au régulateur de tension du circuit intermédiaire (1) des valeurs cibles concernant les propriétés dynamiques dépendant des commandes actuellement présentes.
  4. Dispositif opérationnel selon la revendication 3, où le contrôleur (10) transmet au régulateur de tension du circuit intermédiaire (1) des valeurs cibles concernant au moins une des tensions du circuit intermédiaire, des constantes de temps du régulateur de tension du circuit intermédiaire (1) et des ondes harmoniques admises (THD).
  5. Dispositif opérationnel selon la revendication 2, où le régulateur de tension du circuit intermédiaire (1) transmet au contrôleur (10) des paramètres opérationnels du circuit de lissage (L1, D1, C1, S1).
  6. Dispositif opérationnel selon la revendication 5, où le régulateur de tension du circuit intermédiaire (1) transmet au contrôleur des informations concernant le type de tension d'entrée présente, le niveau de la tension d'entrée présente et/ou la tension du circuit intermédiaire (Vz).
  7. Dispositif opérationnel selon l'une quelconque des revendications 2 ou 6, où le contrôleur (10) est raccordé à un dispositif de stockage (12) dans lequel un tableau comparatif est mémorisé, attribuant aux commandes externes définies des valeurs cibles pour le circuit de lissage (L1, D1, C1, S1).
  8. Dispositif opérationnel selon l'une quelconque des revendications précédentes, où les propriétés du régulateur de tension du circuit intermédiaire (1) peuvent être ajustées en fonction de la tension d'entrée.
  9. Dispositif opérationnel selon l'une quelconque des revendications précédentes, où les commandes externes sont des renseignements concernant la puissance de sortie du circuit de charge (8).
  10. Procédé pour faire fonctionner un dispositif opérationnel pour moyen d'éclairage (LA), en particulier un ballast électronique à intensité variable pour au moins une lampe à gaz de décharge, en particulier une lampe fluorescente, avec un circuit de lissage (L1, D1, C1, S1), fourni avec une tension d'entrée et contrôlé par un régulateur de tension du circuit intermédiaire (1), pour générer une tension CC régulée du circuit intermédiaire (Vz) ainsi qu'un inverseur de puissance (7), chargé avec la tension CC du circuit intermédiaire (Vz) qui alimente la lampe, caractérisé en ce que
    - les commandes externes sont envoyées vers un contrôleur (10) attribué au régulateur de tension du circuit intermédiaire (1), et en ce que
    - le régulateur de tension du circuit intermédiaire (1) a des propriétés de réglage qui dépendent des commandes externes présentes dans le contrôleur (10).
  11. Procédé selon la revendication 10, où
    - le régulateur de tension du circuit intermédiaire (1) est configuré comme un circuit logique, et
    - un contrôleur contrôlé par un logiciel (10) envoie au régulateur de tension du circuit intermédiaire (1) des valeurs cibles pour le fonctionnement du circuit du lissage (L1, D1, C1, S1).
EP10182614.7A 2005-04-22 2006-03-27 PFC numérique parametrable Not-in-force EP2296449B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200510018775 DE102005018775A1 (de) 2005-04-22 2005-04-22 Parametrisierbarer digitaler PFC
EP06723768.5A EP1872627B1 (fr) 2005-04-22 2006-03-27 Pfc numerique parametrable

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP06723768.5A Division EP1872627B1 (fr) 2005-04-22 2006-03-27 Pfc numerique parametrable
EP06723768.5 Division 2006-03-27

Publications (2)

Publication Number Publication Date
EP2296449A1 EP2296449A1 (fr) 2011-03-16
EP2296449B1 true EP2296449B1 (fr) 2016-03-16

Family

ID=37027709

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10182614.7A Not-in-force EP2296449B1 (fr) 2005-04-22 2006-03-27 PFC numérique parametrable
EP06723768.5A Not-in-force EP1872627B1 (fr) 2005-04-22 2006-03-27 Pfc numerique parametrable

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06723768.5A Not-in-force EP1872627B1 (fr) 2005-04-22 2006-03-27 Pfc numerique parametrable

Country Status (5)

Country Link
EP (2) EP2296449B1 (fr)
CN (1) CN101164383B (fr)
AU (1) AU2006239627B2 (fr)
DE (1) DE102005018775A1 (fr)
WO (1) WO2006114175A2 (fr)

Families Citing this family (16)

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Publication number Priority date Publication date Assignee Title
US7288902B1 (en) 2007-03-12 2007-10-30 Cirrus Logic, Inc. Color variations in a dimmable lighting device with stable color temperature light sources
US7667408B2 (en) 2007-03-12 2010-02-23 Cirrus Logic, Inc. Lighting system with lighting dimmer output mapping
DE102008057333A1 (de) 2008-11-14 2010-05-20 Tridonicatco Gmbh & Co. Kg Adaptiver PFC für Leuchtmittel-Lastkreis, insbesondere Lastkreis mit LED
US9155174B2 (en) 2009-09-30 2015-10-06 Cirrus Logic, Inc. Phase control dimming compatible lighting systems
FR2961967B1 (fr) * 2010-06-24 2012-07-20 Continental Automotive France Procede de gestion de la tension d'alimentation d'un calculateur electronique de vehicule automobile
US8536799B1 (en) 2010-07-30 2013-09-17 Cirrus Logic, Inc. Dimmer detection
US8729811B2 (en) 2010-07-30 2014-05-20 Cirrus Logic, Inc. Dimming multiple lighting devices by alternating energy transfer from a magnetic storage element
US9307601B2 (en) 2010-08-17 2016-04-05 Koninklijke Philips N.V. Input voltage sensing for a switching power converter and a triac-based dimmer
CN103314639B (zh) 2010-08-24 2016-10-12 皇家飞利浦有限公司 防止调光器提前重置的装置和方法
DE102012206349A1 (de) 2011-12-23 2013-06-27 Tridonic Gmbh & Co Kg Verfahren und Schaltungsanordnung zum Betrieb von Leuchtmitteln mit Lastsprung
WO2013126836A1 (fr) 2012-02-22 2013-08-29 Cirrus Logic, Inc. Compensation de courant de charge mixte pour éclairage del
DE102012017397A1 (de) * 2012-04-13 2013-10-17 Tridonic Gmbh & Co. Kg Verfahren zum Regeln einer Leistungsfaktorkorrekturschaltung, Leistungsfaktorkorrekturschaltung und Betriebsgerät für ein Leuchtmittel
US9184661B2 (en) 2012-08-27 2015-11-10 Cirrus Logic, Inc. Power conversion with controlled capacitance charging including attach state control
DE102012216047A1 (de) * 2012-09-11 2014-03-13 Tridonic Gmbh & Co. Kg Einstellung einer Leistungsfaktorkorrektur für Lastkreis mit Leuchtmitteln
WO2014152933A1 (fr) 2013-03-14 2014-09-25 Cirrus Logic, Inc. Dissipation de puissance de système électronique commandé par le biais d'un circuit de dissipation de puissance auxiliaire
AT15366U1 (de) * 2016-04-07 2017-07-15 Tridonic Gmbh & Co Kg Verfahren und Schaltungsanordnung zum Betrieb von Leuchtmitteln

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Publication number Priority date Publication date Assignee Title
DE4039161C2 (de) * 1990-12-07 2001-05-31 Zumtobel Ag Dornbirn System zur Steuerung der Helligkeit und des Betriebsverhaltens von Leuchtstofflampen
DE19708791C5 (de) * 1997-03-04 2004-12-30 Tridonicatco Gmbh & Co. Kg Steuerschaltung und elektronisches Vorschaltgerät mit einer derartigen Steuerschaltung
DE19708783C1 (de) * 1997-03-04 1998-10-08 Tridonic Bauelemente Verfahren und Vorrichtung zum Regeln des Betriebsverhaltens von Gasentladungslampen
EP1771048A3 (fr) * 2000-09-15 2007-04-11 TridonicAtco GmbH & Co. KG Ballast électronique avec une unité de commande numérique
DE10120497B4 (de) 2000-09-15 2015-10-15 Tridonic Gmbh & Co Kg Elektronisches Vorschaltgerät
EP1189489B1 (fr) * 2000-09-15 2006-05-31 TridonicAtco GmbH & Co. KG Circuit de commande avec une entrée de configuration

Also Published As

Publication number Publication date
WO2006114175A2 (fr) 2006-11-02
AU2006239627A1 (en) 2006-11-02
WO2006114175A3 (fr) 2007-01-11
EP2296449A1 (fr) 2011-03-16
AU2006239627B2 (en) 2010-02-04
CN101164383A (zh) 2008-04-16
CN101164383B (zh) 2012-07-04
DE102005018775A1 (de) 2006-10-26
EP1872627A2 (fr) 2008-01-02
EP1872627B1 (fr) 2013-05-22

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