EP0886200B1 - Circuit pour générer une tension continue indépendante de la charge - Google Patents

Circuit pour générer une tension continue indépendante de la charge Download PDF

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Publication number
EP0886200B1
EP0886200B1 EP98110544A EP98110544A EP0886200B1 EP 0886200 B1 EP0886200 B1 EP 0886200B1 EP 98110544 A EP98110544 A EP 98110544A EP 98110544 A EP98110544 A EP 98110544A EP 0886200 B1 EP0886200 B1 EP 0886200B1
Authority
EP
European Patent Office
Prior art keywords
arrangement
signal
voltage
current
output
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.)
Expired - Lifetime
Application number
EP98110544A
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German (de)
English (en)
Other versions
EP0886200A2 (fr
EP0886200A3 (fr
Inventor
Martin Feldtkeller
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Infineon Technologies AG
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Infineon Technologies AG
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Publication date
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Publication of EP0886200A2 publication Critical patent/EP0886200A2/fr
Publication of EP0886200A3 publication Critical patent/EP0886200A3/fr
Application granted granted Critical
Publication of EP0886200B1 publication Critical patent/EP0886200B1/fr
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/613—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in parallel with the load as final control devices

Definitions

  • a load change occurring at the output terminals is required with constant mains voltage, a change in regulated by the current control arrangement, in particular sinusoidal Current consumption. That leaves the power consumption and thus the power consumption is initially the same when the load changes a change in the output voltage.
  • This change will registered by the voltage measuring arrangement and as a voltage signal via the feedback branch to the current control arrangement fed back, depending on the current consumption there readjust from the load change to the output voltage reached the specified value again.
  • Integration of the voltage signal in the control arrangement of the Feedback branch provided. Usually caused by one large integration time constant become load changes and thus changes in the output voltage are delayed the current control arrangement fed back, the readjustment of the Current change is therefore relatively sluggish.
  • a change in current consumption is also in the event of a change the mains voltage required, which must then be taken into account in particular is when the circuit arrangement in so-called Wide range power supplies are used, which is a constant Output voltage for input voltages between should deliver approx. 90V and 265V.
  • the mains current consumption initially changes proportionally to the voltage change while moving through the circuit arrangement absorbed and output power changes quadratically depending on the voltage change.
  • the Output voltage for example, initially when the mains voltage is reduced from, this change by the voltage measuring arrangement registered and as an integrated voltage signal via the Feedback branch fed back to the current measuring arrangement becomes.
  • the current consumption is both when the load changes and when Change in the mains voltage until the Output voltage set again to the specified value Has.
  • the current consumption is regulated in the current regulating arrangement using a control loop that has a rated Mains voltage signal is supplied, the current consumption proportional to this signal.
  • the rated mains voltage signal is generated by multiplying one at the input terminal of the current control arrangement control signal present with a direct from the line voltage dependent line voltage signal.
  • the mains voltage signal is by the factor rate four to achieve a current draw that twice the original power consumption.
  • the control signal present at the input terminal of the current control arrangement is thus quadratic dependent on the mains voltage, the smaller the mains voltage, the greater the signal is.
  • the aim of the present invention is to provide a circuit arrangement to generate a load-independent DC voltage for To make available, with a readjustment of the output voltage regardless of the load and at least approximately regardless of the mains voltage.
  • the one at the input terminal for different mains voltages applied control signals are still square depending on the respective mains voltage, a change however, these signals occur due to the same load change of the function generator depending on their absolute value.
  • the influence of the mains voltage, from which the value of the control signal depends on those required to readjust the current consumption The time period is considerably reduced.
  • the output signal of the function generator which is fed to the current control arrangement at its input terminal for evaluating the mains voltage signal, is thus exponentially dependent on the signal supplied by the integration arrangement, which in turn depends on the voltage signal. Changes in the voltage signal when the load connected to the output terminals of the circuit arrangements changes have an exponential effect on the control signal applied to the input terminal.
  • the control signals applied to the input terminal for different line voltages are quadratic dependent on the respective line voltage, however, these signals are changed with the same load change due to the function generator with exponential transfer function proportional to its absolute value.
  • the regulation of the mains current consumption takes place in this embodiment independently of the load and the mains voltage.
  • the circuit arrangement is preferably designed so that the base a to which the input signal of the function generator is set in the exponent, the Euler number e is.
  • Such function generators with an exponential to the base e Transmission behavior is simple to realize using a diode or a transistor.
  • a first is provided for the function generator Subtract circuit downstream, which is a constant signal subtracted from the output signal of the function generator.
  • the current control arrangement preferably assigns one in parallel whose input terminals are switched circuit breakers, one Pulse width modulator, a second voltage measuring arrangement, a Current measuring arrangement, a second subtracting arrangement as well a multiplier arrangement.
  • the circuit breaker will depending on an output signal of the pulse width modulator open or closed with an entrance to the Pulse width modulator via the second subtracting arrangement Differential signal is supplied, which is the difference of a signal supplied by the current measuring arrangement and one product signal supplied by the multiplier arrangement.
  • the product signal is generated by means of the multiplier arrangement from an output signal of the second voltage measuring arrangement, that corresponds to the mains voltage signal, and that at the Input terminal of the current control arrangement applied control signal educated.
  • Such a current control arrangement causes one in the presence of a sinusoidal mains voltage essentially sinusoidal mains current consumption, the amplitude of the Mains current consumption by evaluating the mains voltage signal can be varied.
  • the invention further relates to a use of the invention Circuit arrangement in a switching power supply.
  • Fig. 1 shows a first embodiment of a circuit arrangement according to the invention.
  • a first rectifier arrangement GL1 having a bridge rectifier BG is shown with an AC voltage connection EK1, EK2 and output terminals AK1, AK2, to which a current control arrangement SRA is connected.
  • the current control arrangement has an input terminal EK3 for applying a control signal RS supplied by a feedback branch RZ.
  • the current control arrangement SRA also has output terminals AK3, AK4, to which a second rectifier arrangement GL2 is connected.
  • An output voltage U a can be tapped at output terminals AK5, AK6 of the second rectifier arrangement GL2 and is to be kept constant independently of a load R L that can be connected to the output terminals AK5, AK6.
  • a first voltage measuring arrangement MA1 is further connected to the output terminals AK5, AK6 of the second rectifier arrangement GL2 and supplies a voltage signal SS dependent on the output voltage U a to a control arrangement RA in the feedback branch RZ.
  • the current control arrangement SRA shown has a second voltage measuring arrangement which is designed as a resistor R S , which is connected to an output terminal AK1 of the first rectifier arrangement GL1, and from which a mains voltage signal NS can be tapped. Due to the bridge rectifier BG, this mains voltage signal NS depends on the magnitude of the mains voltage U N. After this mains voltage signal NS has been multiplied in a multiplier MUL by the control signal RS, a current signal SI supplied by a current measuring arrangement SMA is subtracted from the evaluated mains voltage signal BNS resulting from the evaluation of the mains voltage signal NS by the control signal RS.
  • the current measuring arrangement SMA has a current sensing resistor R F , on which a voltage drop is produced by means of a current I flowing into or out of the current control arrangement SRA, which drop is determined by means of an operational amplifier OPV and is supplied as a current signal SI to a third subtracting arrangement SUB3 ,
  • An output signal of the third subtraction arrangement SUB3 is present at an input of a pulse width modulator PWM, at whose output control signals AS are present, by means of which a power switch LS connected between the output terminals AK3, AK4 of the current control arrangement SRA is opened or closed.
  • the circuit breaker LS When the circuit breaker LS is closed, the current I flows in the current control arrangement via an inductance L and the circuit breaker; the inductance L takes up energy. When the circuit breaker LS is open, the inductance L delivers energy in the form of current via a diode D to a capacitance C of the second rectifier arrangement GL2.
  • the control signals AS of the pulse width modulator PWM are such that the switch LS is closed the longer the larger a signal present at the input of the pulse width modulator PWM.
  • the current control arrangement SRA shown with a sinusoidal mains voltage U N or a sinusoidal mains voltage signal NS, causes a sinusoidal mains current IN or a sinusoidal current I.
  • the amplitude of the current I is proportional to the amplitude of the rated mains voltage signal BNS supplied by the multiplier arrangement MUL. Halving the mains voltage U N thus halves the mains current consumption or reduces the power delivered to the load R L by a factor of 4. If the mains voltage U N is halved, the original output power is maintained and the output voltage U a is maintained at a predeterminable value, a doubling of the mains current consumption compared to the original mains current consumption is required.
  • the control signal applied to the input terminal EK3 of the current control arrangement SRA must therefore be increased by a factor of 4 compared to the original value. This is as follows:
  • the function generator FG connected downstream of the integrating arrangement IN uses this output signal as the input signal x and uses it to generate an output signal y which is exponentially dependent thereon and which is fed directly to the current regulating arrangement SRA in the example shown as a regulating signal.
  • the control signal RS and thus the current I flowing in the current control arrangement SRA increases until the output voltage U a again reaches a predetermined value at which the voltage signal SS corresponds to the reference signal U 1 , so that the control signal RS is no longer increased , When the mains voltage U N increases, the control signal RS decreases accordingly.
  • the current consumption or the current I flowing in the current control arrangement SRA is readjusted if the load R L changes while the mains voltage U N remains the same. If the control signal RS initially remains constant, the power consumed or output remains constant and the output voltage U A changes. The control signal RS is then readjusted in the manner described until the output voltage U A again reaches a predetermined value.
  • control signal RS is quadratic dependent on the mains voltage U N , while the same load changes independently of the mains voltage U N initially cause the same changes in the output voltage U A.
  • the same load changes also cause the same changes in the output signal supplied by the integrating arrangement IN, while this requires changes in the control signal RS which are dependent on the input voltage U N.
  • the change in the output signal is therefore independent of its absolute value and only dependent on the change in the input signal x. This results in readjustment of the output voltage U A with exponential transmission behavior of the function generator and change in the line voltage U N or change in the load R L independently of the line voltage.
  • a desired exponential function can preferably be carried out by a polynomial function in for the input signals x and the Output signals approximate relevant functional areas become.
  • FIG. 2 shows a further embodiment of a circuit arrangement according to the invention, in which the function generator FG is followed by a third subtracting arrangement SUB3, which subtracts a constant signal U 2 from the output signal y of the function generator FG.
  • SUB3 subtracts a constant signal U 2 from the output signal y of the function generator FG.
  • the function generator FG has a transistor T, which is connected to a base electrode B with reference potential M, to an emitter electrode E to an input terminal EK and to a collector electrode C via a resistor R to an output terminal AK. Between the collector electrode C and the output terminal AK there is an operational amplifier OPV, which is connected with one input to the collector electrode C and with another input with reference potential M. In this circuit, a voltage U 2 present between the output terminal AK and the reference potential results exponentially to the base e from a voltage U 1 present between the input terminal EK and the reference potential.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Rectifiers (AREA)
  • Dc-Dc Converters (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Control Of Electrical Variables (AREA)

Claims (10)

  1. Circuit pour générer une tension continue indépendante de la charge et ayant les caractéristiques suivantes :
    un premier redresseur (GL1) ayant deux bornes de tension alternative (EK1, EK2) et deux bornes de sortie (AK1, AK2),
    un régulateur d'intensité (SRA) relié aux bornes de sortie (AK1, AK2) du premier redresseur (GL1) et ayant deux bornes de sortie (AK3, AK4) pour réguler le courant pris au réseau,
    un second redresseur (GL2) relié aux bornes de sortie (AK3, AK4) du régulateur de courant (SRA) et ayant des bornes de sortie (AK5, AK6) fournissant une tension de sortie (Ua),
    un dispositif de mesure de tension (MA) relié aux bornes de sortie du second redresseur pour fournir un signal de tension (SS) à sa sortie,
    une branche de réaction (RZ) avec un dispositif de régulation (RA) ayant un dispositif intégrateur (IN) pour envoyer en réaction le signal de tension (SS) à une borne d'entrée (EK) du régulateur d'intensité (SRA),
    caractérisé par
    un générateur de fonction (FG) en aval du régulateur (RA) dans la branche de réaction, ce générateur fournissant un signal de sortie (y) dépendant du signal d'entée (x) selon une fonction y = (x),
    la dérivée de la fonction f (x) dépendant du signal d'entrée (x) et la dérivée augmentant au moins par segment avec le signal d'entrée (x).
  2. Circuit selon la revendication 1,
    caractérisé en ce que
    le générateur de fonction (FG) génère le signal de sortie (y) au moins approximativement selon la relation y = f (x) =c abx ou selon la relation y = f (x) = c.xn dans lesquelles a, b, c, n sont des constantes.
  3. Circuit selon la revendication 2,
    caractérisé en ce que
    a est le nombre d'Euler e.
  4. Circuit pour générer une tension continue indépendante, selon la revendication 2,
    caractérisé en ce que n>2.
  5. Circuit selon l'une des revendications précédentes,
    caractérisé en ce que
    le générateur de fonction (FG) est suivi par un premier soustracteur (SUB1) pour soustraire un signal constant du signal de sortie (y).
  6. Circuit selon l'une des revendications précédentes,
    caractérisé en ce que
    le générateur de fonction (FG) comporte une diode ou un transistor.
  7. Circuit selon l'une des revendications précédentes,
    caractérisé en ce que
    l'intégrateur (IN) est précédé d'un second soustracteur (SUB2) dans le dispositif de régulation (RA) qui soustrait le signal de tension (SS) d'un signal de référence.
  8. Circuit selon l'une des revendications précédentes,
    caractérisé en ce que
    le régulateur d'intensité (SRA) comporte un commutateur de puissance (LS) branché en parallèle sur les bornes de sortie (AK3, AK4), un modulateur de largeur d'impulsion (PWM), un second dispositif de mesure de tension, un dispositif de mesure d'intensité (SMA), un troisième soustracteur (SUB3) ainsi qu'un multiplicateur (MUL),
    le commutateur de puissance (LS) s'ouvrant ou se fermant en fonction du signal de sortie du modulateur de largeur d'impulsion (PWM) et l'entrée du modulateur de largeur d'impulsion (PMW) reçoit par le troisième soustracteur (SUB3), un signal de différence qui résulte de la différence d'un signal fourni par le dispositif de mesure d'intensité (SMA) et d'un signal de produit fourni par le multiplicateur (MUL),
    le signal de produit étant formé par le multiplicateur (MUL) à partir du signal de sortie du second dispositif de mesure de tension et d'un signal appliqué à la borne d'entrée (EK3) du régulateur d'intensité (SRA).
  9. Circuit selon l'une des revendications précédentes,
    caractérisé en ce que
    le premier redresseur (GL1) est un redresseur monté en pont.
  10. Application d'un circuit, selon l'une des revendications précédentes, à une alimentation.
EP98110544A 1997-06-18 1998-06-09 Circuit pour générer une tension continue indépendante de la charge Expired - Lifetime EP0886200B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19725842A DE19725842C2 (de) 1997-06-18 1997-06-18 Schaltungsanordnung zur Erzeugung einer lastunabhängigen Gleichspannung
DE19725842 1997-06-18

Publications (3)

Publication Number Publication Date
EP0886200A2 EP0886200A2 (fr) 1998-12-23
EP0886200A3 EP0886200A3 (fr) 2000-03-29
EP0886200B1 true EP0886200B1 (fr) 2002-05-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP98110544A Expired - Lifetime EP0886200B1 (fr) 1997-06-18 1998-06-09 Circuit pour générer une tension continue indépendante de la charge

Country Status (4)

Country Link
US (1) US6069470A (fr)
EP (1) EP0886200B1 (fr)
JP (1) JP3538320B2 (fr)
DE (2) DE19725842C2 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100333973B1 (ko) * 1999-06-14 2002-04-24 김덕중 역률보상 제어기
CN2402549Y (zh) * 1999-12-02 2000-10-25 杜顺兴 双回路汽车安全带自动警示装置
JP4692704B2 (ja) * 2001-06-11 2011-06-01 株式会社富士通ゼネラル 力率改善電源回路
DE10162274A1 (de) * 2001-12-19 2003-07-10 Philips Intellectual Property Verfahren zur Stromversorgung von Stromverbrauchern mit niedriger Versorgungsspannung
DE10225406B4 (de) 2002-06-07 2005-07-14 Infineon Technologies Ag Verfahren zur Ansteuerung eines Schalters in einem Schaltwandler und Ansteuerschaltung zur Ansteuerung eines Schalters
JP2004080553A (ja) 2002-08-21 2004-03-11 Nec Corp データ出力回路及びデータ出力方法
KR100544186B1 (ko) * 2003-06-12 2006-01-23 삼성전자주식회사 전원 공급 장치
DE10355670B4 (de) 2003-11-28 2005-12-08 Infineon Technologies Ag Verfahren zur Ansteuerung eines Schalters in einer Leistungsfaktorkorrekturschaltung und Ansteuerschaltung
DE102004036522A1 (de) 2004-07-28 2006-03-23 Infineon Technologies Ag Ansteuerschaltung für einen Schalter in einem Schaltwandler zur Verbesserung der Sprungantwort
DE102004038353B4 (de) * 2004-08-06 2009-01-15 Infineon Technologies Austria Ag Ansteuerschaltung für einen Schalter in einem Schaltwandler und Schaltungsanordnung mit einem Schaltwandler und einer Last
DE102004053144B4 (de) * 2004-11-03 2011-05-19 Infineon Technologies Ag Hochsetzsteller mit verbessertem dynamischem Verhalten
US7362599B2 (en) * 2004-12-13 2008-04-22 Thomas & Betts International, Inc. Switching power supply with capacitor input for a wide range of AC input voltages
US7888917B2 (en) * 2008-04-23 2011-02-15 Honeywell International Inc. Systems and methods for producing a substantially constant output voltage in a power source boost system
JP4924659B2 (ja) * 2009-05-27 2012-04-25 サンケン電気株式会社 Ｄｃ−ｄｃコンバータ
CN103516191B (zh) * 2012-06-29 2015-11-04 珠海格力电器股份有限公司 功率因数校正方法、电路以及开关电源
US8917076B2 (en) * 2012-08-10 2014-12-23 Monolithic Power Systems, Inc. Off-line regulator with pass device and associated method
EP3761494A1 (fr) 2019-07-02 2021-01-06 Infineon Technologies Austria AG Procédé de commande d'un commutateur électronique dans un circuit convertisseur de puissance et circuit convertisseur de puissance

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993026078A1 (fr) * 1992-06-10 1993-12-23 Digital Equipment Corporation Bloc d'alimentation a courant continu commute et a facteur de puissance eleve
US5359276A (en) * 1993-05-12 1994-10-25 Unitrode Corporation Automatic gain selection for high power factor
US5371667A (en) * 1993-06-14 1994-12-06 Fuji Electrochemical Co., Ltd. Electric power supply
US5619405A (en) * 1995-12-21 1997-04-08 Reltec Corporation Variable bandwith control for power factor correction

Also Published As

Publication number Publication date
EP0886200A2 (fr) 1998-12-23
JPH1155939A (ja) 1999-02-26
US6069470A (en) 2000-05-30
DE19725842C2 (de) 1999-04-22
DE59803965D1 (de) 2002-06-06
DE19725842A1 (de) 1999-01-07
EP0886200A3 (fr) 2000-03-29
JP3538320B2 (ja) 2004-06-14

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