FR2819121A1 - Use of energy return transformer to stabilize resonant circuit in half-bridge inverter, uses return to resonant circuit of energy recovered from freewheel components over capacitive arms of bridge - Google Patents

Use of energy return transformer to stabilize resonant circuit in half-bridge inverter, uses return to resonant circuit of energy recovered from freewheel components over capacitive arms of bridge Download PDF

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Publication number
FR2819121A1
FR2819121A1 FR0015305A FR0015305A FR2819121A1 FR 2819121 A1 FR2819121 A1 FR 2819121A1 FR 0015305 A FR0015305 A FR 0015305A FR 0015305 A FR0015305 A FR 0015305A FR 2819121 A1 FR2819121 A1 FR 2819121A1
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Prior art keywords
return
resonant circuit
energy
bridge
transformer
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FR0015305A
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French (fr)
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FR2819121B1 (en
Inventor
Robert Maslanka
Jerzy Dora
Francois Bertin Rasoanarivo
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CAPRA SOC
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CAPRA SOC
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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
    • H05B41/282—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 with semiconductor devices
    • H05B41/2825—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 with semiconductor devices by means of a bridge converter in the final stage
    • H05B41/2827—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 with semiconductor devices by means of a bridge converter in the final stage using specially adapted components in the load circuit, e.g. feed-back transformers, piezoelectric transformers; using specially adapted load circuit configurations
    • 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
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Abstract

The resonant circuit of the half-bridge inverter contains an energy return transformer (Ta) across the resonance capacitor (Cres). The energy is returned through an inductor (La) and is taken between the junction of the capacitors (C1,C2) forming half the bridge and the junction of their freewheel diodes (D1,D2)

Description

<Desc/Clms Page number 1> <Desc / Clms Page number 1>

La présente invention concerne un dispositif permettant d'augmenter l'efficacité et de réduire la pollution électromagnétique dans un circuit de résonance d'un convertisseur en demi-pont standard. Ceci grâce à la forme sinusoïdale ou quasi-sinusoïdale du courant.  The present invention relates to a device for increasing the efficiency and reducing electromagnetic pollution in a resonance circuit of a standard half-bridge converter. This is due to the sinusoidal or quasi-sinusoidal shape of the current.

Dans certaines conditions instables (court-circuit, effet de transition), certains problèmes peuvent apparaître.  Under certain unstable conditions (short circuit, transition effect), certain problems may appear.

Dans ces cas, la tension et l'amplitude du courant peuvent parfois augmenter, allant jusqu'à la destruction du convertisseur ou de la charge. In these cases, the voltage and the amplitude of the current can sometimes increase, up to the destruction of the converter or the load.

Le retour de l'énergie du circuit de résonance à l'entrée du convertisseur permet d'éviter ce genre de situations dangereuses.  The return of energy from the resonance circuit to the input of the converter avoids this kind of dangerous situation.

Sur le schéma de la figure 1, un circuit résonant série ( Cres , Lres ) est connecté à une charge. Le transformateur de retour Ta , associé à l'inductance de

Figure img00010001

retour La et aux diodes D1 et D2 , donne la limite de l'amplitude de la tension sur le condensateur résonant Cres . In the diagram in Figure 1, a series resonant circuit (Cres, Lres) is connected to a load. The return transformer Ta, associated with the inductance of
Figure img00010001

return La and at diodes D1 and D2, gives the limit of the amplitude of the voltage on the resonant capacitor Cres.

De cette façon, l'énergie dans le circuit ainsi que le courant alternatif sont limités.  In this way, the energy in the circuit as well as the alternating current are limited.

En fonction de l'état réel de la charge, une partie de l'énergie est renvoyée à l'entrée continue de la source de courant.  Depending on the actual state of the load, part of the energy is returned to the continuous input of the current source.

C'est pourquoi un tel convertisseur est idéal pour des applications spécifiques telles que les lampes à décharge ou la technologie au plasma.  This is why such a converter is ideal for specific applications such as discharge lamps or plasma technology.

Le ratio du transformateur de retour détermine le facteur de qualité effectif du circuit résonant et définit les caractéristiques de sortie du convertisseur.  The ratio of the return transformer determines the effective quality factor of the resonant circuit and defines the output characteristics of the converter.

Il peut être optimisé pour obtenir un fonctionnement comme une source de courant, pour des charges allant du courant nominal au courant de court-circuit.  It can be optimized to obtain operation as a current source, for loads ranging from nominal current to short-circuit current.

L'inductance de retour La est utilisée pour limiter les pics du courant de retour. Sa valeur doit être relativement basse pour éviter les changements de phase importants. The return inductance La is used to limit the peaks of the return current. Its value must be relatively low to avoid significant phase changes.

Claims (1)

REVENDICATIONS l) Convertisseur demi-pont caractérisé en ce qu'il comporte un transformateur de retour Ta , monté en parallèle aux bornes d'un condensateur de résonance Cres , pour constituer une protection de l'ensemble convertisseur-charge. Il permet de renvoyer une partie de l'énergie à l'entrée continue de la source de courant en fonction de l'état réel de la charge qui est connectée en série avec le circuit résonant série formé par l'inductance de résonance Lres et le condensateur de résonance Cres .  l) Half-bridge converter characterized in that it comprises a return transformer Ta, mounted in parallel at the terminals of a resonance capacitor Cres, to constitute a protection of the converter-load assembly. It allows part of the energy to be returned to the continuous input of the current source according to the actual state of the load which is connected in series with the series resonant circuit formed by the resonance inductance Lres and the Cres resonance capacitor. 2) Convertisseur selon la revendication 1 caractérisé en ce que le transformateur de retour Ta , associé à une inductance de retour La et aux diodes de retour Dl et D2 , limite l'amplitude de la tension sur le condensateur résonant Cres .  2) Converter according to claim 1 characterized in that the return transformer Ta, associated with a return inductance La and the return diodes Dl and D2, limits the amplitude of the voltage on the resonant capacitor Cres. 3) Convertisseur selon la revendication 2 caractérisé en ce que le primaire du transformateur de retour Ta constitue avec l'inductance de retour La le circuit de retour.  3) Converter according to claim 2 characterized in that the primary of the return transformer Ta constitutes with the return inductance La the return circuit. 4) Convertisseur selon la revendication 2 ou 3 caractérisé en ce que l'inductance de retour La limite les pics du courant de retour.  4) Converter according to claim 2 or 3 characterized in that the return inductance The limit peaks of the return current. 5) Convertisseur selon la revendication 2 ou 3 ou 4, caractérisé en ce que la valeur de l'inductance de retour La est relativement basse pour éviter les changements de phase importants.  5) Converter according to claim 2 or 3 or 4, characterized in that the value of the return inductance La is relatively low to avoid significant phase changes. 6) Convertisseur selon une des revendications précédentes caractérisé en ce que le ratio du transformateur de retour Ta peut être optimisé pour obtenir un fonctionnement comme une source de courant, pour des charges allant du courant nominal au courant de court-circuit.  6) Converter according to one of the preceding claims, characterized in that the ratio of the return transformer Ta can be optimized to obtain operation as a current source, for loads ranging from nominal current to short-circuit current. 7) Utilisation du convertisseur selon l'une des revendications précédentes pour des lampes à décharge ou la technologie au plasma. 7) Use of the converter according to one of the preceding claims for discharge lamps or plasma technology.
FR0015305A 2000-12-28 2000-12-28 USE OF A RETURN TRANSFORMER FOR THE STABILIZATION OF A RESONANT CIRCUIT IN A HALF-BRIDGE CONVERTER Expired - Fee Related FR2819121B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0015305A FR2819121B1 (en) 2000-12-28 2000-12-28 USE OF A RETURN TRANSFORMER FOR THE STABILIZATION OF A RESONANT CIRCUIT IN A HALF-BRIDGE CONVERTER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0015305A FR2819121B1 (en) 2000-12-28 2000-12-28 USE OF A RETURN TRANSFORMER FOR THE STABILIZATION OF A RESONANT CIRCUIT IN A HALF-BRIDGE CONVERTER

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FR2819121A1 true FR2819121A1 (en) 2002-07-05
FR2819121B1 FR2819121B1 (en) 2003-04-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6781423B1 (en) 2003-07-04 2004-08-24 Dialog Semiconductor Gmbh High-voltage interface and driver control circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5982106A (en) * 1992-02-24 1999-11-09 Bobel; Andrzej Self-protected series resonant electronic energy converter
US5995389A (en) * 1995-11-30 1999-11-30 Toko, Inc. Power supply control device
US6150768A (en) * 1992-06-22 2000-11-21 Nilssen; Ole K. Ballast with active power factor correction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5982106A (en) * 1992-02-24 1999-11-09 Bobel; Andrzej Self-protected series resonant electronic energy converter
US6150768A (en) * 1992-06-22 2000-11-21 Nilssen; Ole K. Ballast with active power factor correction
US5995389A (en) * 1995-11-30 1999-11-30 Toko, Inc. Power supply control device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6781423B1 (en) 2003-07-04 2004-08-24 Dialog Semiconductor Gmbh High-voltage interface and driver control circuit
EP1494354A1 (en) * 2003-07-04 2005-01-05 Dialog Semiconductor GmbH High-voltage interface and driver control circuit

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