EP2168229A1 - Ensemble circuit pourvu d'un transformateur de tension et procédé correspondant - Google Patents

Ensemble circuit pourvu d'un transformateur de tension et procédé correspondant

Info

Publication number
EP2168229A1
EP2168229A1 EP07787675A EP07787675A EP2168229A1 EP 2168229 A1 EP2168229 A1 EP 2168229A1 EP 07787675 A EP07787675 A EP 07787675A EP 07787675 A EP07787675 A EP 07787675A EP 2168229 A1 EP2168229 A1 EP 2168229A1
Authority
EP
European Patent Office
Prior art keywords
circuit arrangement
coupled
connection
node
mode switch
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Withdrawn
Application number
EP07787675A
Other languages
German (de)
English (en)
Inventor
Arwed Storm
Siegfried Mayer
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.)
Osram GmbH
Original Assignee
Osram GmbH
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 Osram GmbH filed Critical Osram GmbH
Publication of EP2168229A1 publication Critical patent/EP2168229A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/305—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M3/315—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • 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
    • H02M1/06—Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors
    • 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
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • 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
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/1557—Single ended primary inductor converters [SEPIC]

Definitions

  • the present invention relates to a circuit arrangement with a voltage converter, the voltage converter comprising: an input terminal, an output terminal, a terminal for providing a reference potential, a series connection of a first choke and an electronic switch, which between the input terminal and the terminal coupled to provide the reference potential, wherein between the first throttle and the electronic switch, a first node is formed, a series circuit of a first capacitor and a second throttle, which is connected in parallel to the electronic switch, wherein between the first capacitor and the second throttle second node, a series connection of a first diode and a mode switch coupled between the first node and the output terminal, the first diode being poled to allow current to flow from the first node to the output terminal i the mode switch has a working electrode, a reference electrode and a control electrode, wherein the reference electrode of the mode switch is coupled to the output terminal and the working electrode of the mode switch to the first diode, a second diode whose anode is connected to the second Node and whose cathode is coupled
  • the Topology Boost Converter and SEPIC Single Ended Primary Inductance Converter
  • the first stage accomplishes a power factor correction and provides a DC link voltage
  • a second stage usually generates a high frequency AC voltage for feeding the discharge lamp.
  • the clock in the two clocked power supplies accomplish electronic switches that switch to a mains frequency with a high frequency.
  • WO 02/41480 the respective advantages and disadvantages of the two types of converters are discussed, which are used in the first stage for power factor correction.
  • the main advantage of the boost converter is therefore in high efficiency, while a disadvantage is the lower limit of the output voltage on the peak value of the input voltage.
  • the characteristics of the SEPIC are opposite: Advantageously, its output voltage is independent of the input voltage selectable, while its efficiency is significantly lower than the boost converter.
  • WO 02/41480 now describes a voltage converter whose topology is switchable. Depending on the position of a switch, the disclosed voltage converter operates either as a boost converter in a boost mode or as a SEPIC in a SEPIC mode.
  • the voltage converter disclosed in WO 02/41480 has the following disadvantages: To switch between the topologies, a switch with three poles is necessary. Although this can be achieved with mechanical switches, a realization with semiconductor switches is complicated because two switches are required. In addition, these two switches must be synchronized. Another disadvantage is that in Boost mode a choke, which is needed for the SEPIC, is turned off. The disabled SEPIC throttle has no function in boost mode.
  • the choke which is active in both SEPIC and Boost modes, experiences different loads in both modes with the same power output at the output of the voltage converter.
  • This throttle must be dimensioned so that the maximum storable energy of this throttle in boost mode is not exceeded. In the SEPIC mode, this throttle is then oversized. This leads to the fact that the switchable voltage converter is expensive than the non-switchable converter in whose mode it is currently working.
  • EP 1 710 898 known voltage converter which is shown in FIG.
  • a series circuit of a first throttle Ll and an electronic switch Sl wherein forms a first node Nl at the connection point.
  • the voltage converter can be fed by an energy source whose input terminal J1 generates an input voltage U e .
  • a filter for reducing radio interference or against overvoltage is interposed.
  • Parallel to the electronic switch Sl is a series circuit of a first capacitor Cl and a second
  • Throttle L2 switched, wherein at the connection point of the first capacitor Cl and second throttle L2, a second
  • Node N2 forms.
  • a series circuit of a first diode Dl and a mode switch S2 is connected, wherein the first diode Dl is poled so that it allows a current flow from the first node Nl to the output terminal J2.
  • an output voltage U a is generally buffered by a storage capacitor from which a load, in particular a discharge lamp, draws energy.
  • the storage capacitor is then connected to the so-called DC link voltage.
  • An inverter connected downstream of the voltage converter can generate a high-frequency alternating voltage from the intermediate circuit voltage, which serves to operate a discharge lamp.
  • the voltage converter When the mode switch S2 is closed, the voltage converter operates as a boost converter. This is advantageous if more voltage is required at J2 than is present at Jl.
  • a second diode D2 is connected with its anode to the second node N2 and with its cathode to the output terminal J2. This allows the VT to work as SEPIC when S2 is opened. This is advantageous when a lower voltage is required at J2 than at Jl.
  • the control of the mode switch S2 can be carried out by a control device 12.
  • the controller 12 causes the mode switch S2 to be open if the voltage on the input terminal Jl exceeds a given voltage limit.
  • the mode switch S2 can also be controlled as a function of the voltage required by a lamp to be operated at the output J2. If a lamp requires a high voltage compared to the voltage at the input terminal Jl, the mode switch S2 is closed and the voltage converter operates in boost mode. At comparatively low voltages, the mode switch S2 is opened and the voltage converter operates in SEPIC mode.
  • FIG. 2 of EP 1 710 898 shows an exemplary embodiment of a control device 12 of a mode switch S2.
  • the present invention is therefore based on the object, the above-mentioned circuit arrangement in such a way that it can be realized without high voltage switch.
  • the object is moreover to provide a corresponding method for operating such a circuit arrangement.
  • the present invention is based on the finding that these objects can be achieved if the level of the voltages applied to the electrodes of the mode switch is brought to the level of the output terminal, ie the high voltage level of the so-called intermediate circuit voltage, then the possibility is provided to initiate a switching operation by the low voltage level of the control signal.
  • the present invention offers the advantage of providing a circuit arrangement which makes it possible to switch a voltage converter back and forth between a boost mode and a SEPIC mode without the need for a high-voltage switch. A switching between Boost and SEPIC operation can therefore be triggered directly with the low-voltage output signal of a digital microcontroller.
  • connection for providing a Alternating signal designed to provide an alternating signal during operation of the circuit arrangement, the level of which oscillates between the reference potential and the level at the output terminal.
  • a level adjustment can be avoided.
  • any alternating signal is sufficient for the purpose of the present invention, however, as mentioned, depending on the level of the alternating signal, a level adjustment must be provided.
  • the alternating signal is a rectangular signal.
  • the circuit arrangement further comprises an inverter having at least one series circuit of a first and a second inverter switch which is coupled between the output terminal and the terminal for the reference potential, wherein between the first and the second inverter switch, a third node, in particular a bridge center, is formed, wherein the connection is coupled to the provision of the alternating signal with the third node, in particular this corresponds.
  • the potential at the bridge center which oscillates substantially rectangularly between the reference potential and the potential of the output terminal, is used to provide, together with the control signal, the sum signal for the mode switch as the drive signal.
  • circuit arrangement further comprises a rectifier which provides a DC supply voltage at its output, wherein the first node and the output terminal are coupled to the output of the rectifier.
  • the control device comprises a charge pump having an input which is coupled to the second terminal of the control device.
  • the charge pump comprises a further input which is coupled to the first terminal of the control device.
  • the charge pump has an output and is designed to provide at its output a signal which is correlated with the sum of the signals coupled to its two inputs, wherein between the output of the charge pump and the output of the control means a timer is coupled.
  • a charge pump provides a particularly clever way to add two voltages that are not potential free. It therefore allows the avoidance of devices for shifting the voltage level, which would result in an undesirable expense.
  • the time constant of the timer ei ⁇ nem multiples of the reciprocal of the frequency of the signal with which the inverter switches are controlled. It is thus achieved that the control signal for the control switch of the mode switch, which is composed of the alternating signal and the control signal, is virtually a DC signal whose level differs from that of the control signal by the level at the reference electrode of the mode switch , Thus, only the small control signal between control and working electrode of the mode switch is present and allows the triggering of a switching operation.
  • the time constant of the timer is in particular designed to provide a pulse at the output of the control device as a drive signal for the control electrode of the mode switch, which is suitable for triggering the mode switch.
  • the mode switch is preferably a thyristor or a bipolar transistor or a MOSFET.
  • a thyristor particularly preferred is a realization by a thyristor, since this requires only a low drive voltage and a low drive current and thus a low drive power. It also offers low losses at high RF current amplitudes, blocks even at high dU / dt when the control signal is missing, and therefore serves as an inrush current limit. Moreover, it allows a particularly cost-effective implementation of a circuit arrangement according to the invention.
  • Figure 1 is a schematic representation of a known from the prior art circuit arrangement with a switchable between a boost mode and a SEPIC mode voltage converter.
  • Fig. 2 shows a schematic representation of a circuit arrangement according to the invention with a switchable voltage converter.
  • Fig. 2 shows a schematic representation of an embodiment of a circuit arrangement according to the invention with a switchable voltage converter. It has a rectifier 14, which includes the diodes D3, D4, D5 and D6, wherein at the rectifier input El, E2 a mains AC voltage U N can be applied. At the output of the rectifier 14 between an input terminal Jl of the voltage transformer and the ground potential M Communityge ⁇ set voltage U e is supported by a capacitor C2. This is followed by the series connection of a first choke Ll and an electronic switch Sl, wherein between the first choke Ll and the electronic ballast nischen switch Sl a first node Nl is formed.
  • the series connection of a capacitor Cl and a second inductor L2 is connected in parallel with the electronic switch S1, wherein a second node N2 is formed between the capacitor C1 and the second inductor L2.
  • a first diode and a mode switch S2 which is coupled between the first node Nl and the output terminal J2.
  • the diode D 1 is polarized in such a way that it allows a current flow from the first node N 1 to the output terminal J 2.
  • the mode switch S2 has a working electrode, a reference electrode and a control electrode, the reference electrode of the mode switch S2 with the off ⁇ through terminal J2 and working electrode of the mode switch S2 is coupled to the first diode Dl.
  • a second diode D2 has an anode coupled to the second node N2 and a cathode coupled to the output terminal J2.
  • the circuit arrangement according to the invention also has a control device 12 with an output A1, which is coupled to the control electrode of the mode switch S2; it also has an input E3, which is coupled to supply a control signal to a microcontroller 16.
  • the control device 12 has an input E4, which is coupled to the midpoint HB of a half-bridge inverter.
  • the latter comprises the series connection of two electronic switches S3 and S4, this series circuit being fed from the voltage U a applied to the output terminal J2.
  • This voltage U a is also supported by a capacitor C3.
  • the half-bridge center is coupled via a lamp inductor L3 with a discharge lamp, not shown.
  • the control device 12 comprises a charge pump 20, which has a diode D7, a diode D8 and a capacitor C4.
  • the input E3 is coupled via a resistor Rl and the diode D7 to a node N3, on the other hand via the capacitor C4 to the input E4 of the control device 12 is coupled.
  • the node N3 of the control device 12 is coupled to the output A1 of the control device 12 via the diode D8 and an ohmic resistor R3.
  • the potential of the output terminal J2 is supplied to the control device 12 via an input E5.
  • the resistors Rl and R3 serve to limit the current of the charging currents.
  • the charge pump 20 provided in the control device 12 enables a potential-free addition of the signal provided by a microcontroller 16 at the input E3 as well as the potential applied to the half-bridge center HB, which is provided to the control device 12 via the input E4. Due to the timing element 18, a quasi-DC signal whose level is increased by the potential of the control signal from the level at the reference electrode of the mode switch S2, which corresponds to the potential of the output terminal J2, is provided at the output A1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Inverter Devices (AREA)

Abstract

L'invention concerne un ensemble circuit pourvu d'un transformateur de tension, comprenant : une borne d'entrée (J1), une borne de sortie (J2), un raccordement au potentiel de référence, un circuit série d'une première bobine d'inductance (L1) et d'un commutateur électronique (S1), entre la borne d'entrée (J1) et le raccordement au potentiel de référence, avec un premier nœud (N1) entre la première bobine d'inductance (L1) et le commutateur (S1); un circuit série d'un premier condensateur (C1) et d'une deuxième bobine d'inductance (L2), disposé parallèlement au commutateur électronique (S1) avec un deuxième nœud (N2) entre le premier condensateur (C1) et la deuxième bobine d'inductance (L2); un circuit série d'une première diode (D1) et d'un commutateur de modes (S2), entre le premier nœud (N1) et la borne de sortie (J2); une deuxième diode (D2), et un dispositif de commande (12) avec une sortie (A1), couplé à l'électrode de commande du commutateur de modes (S2). Un demi-pont (S3, S4) disposé en aval se trouve au niveau de la sortie de commande (J2, M). Un signal de rétroaction est déclenché au point central (HB) du demi-pont, ce signal étant acheminé (E4) vers le dispositif de commande (12). Ce signal de rétroaction et un autre signal de commande (E3) commandent le commutateur de modes (S2).
EP07787675A 2007-07-18 2007-07-18 Ensemble circuit pourvu d'un transformateur de tension et procédé correspondant Withdrawn EP2168229A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/057412 WO2009010098A1 (fr) 2007-07-18 2007-07-18 Ensemble circuit pourvu d'un transformateur de tension et procédé correspondant

Publications (1)

Publication Number Publication Date
EP2168229A1 true EP2168229A1 (fr) 2010-03-31

Family

ID=39316334

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07787675A Withdrawn EP2168229A1 (fr) 2007-07-18 2007-07-18 Ensemble circuit pourvu d'un transformateur de tension et procédé correspondant

Country Status (5)

Country Link
US (1) US8379422B2 (fr)
EP (1) EP2168229A1 (fr)
KR (1) KR101391202B1 (fr)
CN (1) CN101755379B (fr)
WO (1) WO2009010098A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101877534B (zh) * 2010-06-28 2012-05-23 浙江工业大学 双极型晶体管型自激式Sepic变换器
WO2014035337A1 (fr) * 2012-09-03 2014-03-06 Dytech Energy Pte. Ltd. Appareil et procédé permettant d'améliorer la production de puissance
TWI462451B (zh) * 2012-12-05 2014-11-21 Hep Tech Co Ltd AC / DC conversion device and its function correction method
CN104734302B (zh) * 2015-04-09 2017-03-15 北京京东方能源科技有限公司 电源供电电路及供电方法
CN112688535B (zh) * 2020-12-30 2022-07-05 上海联影医疗科技股份有限公司 上电控制系统
DE102021208417A1 (de) 2021-08-03 2023-02-09 Osram Gmbh VERFAHREN ZUM BETREIBEN EINES GETAKTETEN ISOLIERENDEN LEISTUNGSWANDLERS MIT EINEM AUSGANGSLEISTUNGSBEREICH ZUM BETREIBEN EINER ANSCHLIEßBAREN LAST

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US6181079B1 (en) 1999-12-20 2001-01-30 Philips Electronics North America Corporation High power electronic ballast with an integrated magnetic component
US6373725B1 (en) 2000-11-20 2002-04-16 Philips Electronics North America Corporation Reconfigurable converter for multiple-level input-line voltages
US6465991B1 (en) * 2001-07-30 2002-10-15 Koninklijke Philips Electronics N.V. Switchable power converter with coupled inductor boost and coupled inductor SEPIC for multiple level input line power factor correction
JP2003180072A (ja) * 2001-08-07 2003-06-27 Seiko Instruments Inc 昇降圧スイッチングレギュレータ制御回路及び昇降圧スイッチングレギュレータ
JP4294459B2 (ja) * 2003-12-12 2009-07-15 富士通株式会社 光増幅器
DE102004001618A1 (de) * 2004-01-09 2005-08-11 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanordnung zum Betrieb von Lichtquellen
DE102005016047A1 (de) * 2005-04-07 2006-10-12 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Umschaltbarer Spannungswandler

Non-Patent Citations (2)

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Title
None *
See also references of WO2009010098A1 *

Also Published As

Publication number Publication date
WO2009010098A1 (fr) 2009-01-22
CN101755379A (zh) 2010-06-23
US20100202173A1 (en) 2010-08-12
KR20100037149A (ko) 2010-04-08
KR101391202B1 (ko) 2014-05-02
CN101755379B (zh) 2013-11-20
US8379422B2 (en) 2013-02-19

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