WO2009074143A2 - Dispositif et procédé de conversion d'une tension - Google Patents

Dispositif et procédé de conversion d'une tension Download PDF

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Publication number
WO2009074143A2
WO2009074143A2 PCT/DE2008/002045 DE2008002045W WO2009074143A2 WO 2009074143 A2 WO2009074143 A2 WO 2009074143A2 DE 2008002045 W DE2008002045 W DE 2008002045W WO 2009074143 A2 WO2009074143 A2 WO 2009074143A2
Authority
WO
WIPO (PCT)
Prior art keywords
converter
recuperation
voltage
energy
output side
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.)
Ceased
Application number
PCT/DE2008/002045
Other languages
German (de)
English (en)
Other versions
WO2009074143A3 (fr
Inventor
Martin Kutschker
Martin Saliternig
Peter Maisel
Wilhelm Berg
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.)
Finepower GmbH
Aumovio Microelectronic GmbH
Original Assignee
Conti Temic Microelectronic GmbH
Finepower 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 Conti Temic Microelectronic GmbH, Finepower GmbH filed Critical Conti Temic Microelectronic GmbH
Priority to DE112008003717T priority Critical patent/DE112008003717A5/de
Publication of WO2009074143A2 publication Critical patent/WO2009074143A2/fr
Publication of WO2009074143A3 publication Critical patent/WO2009074143A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/34—Snubber circuits

Definitions

  • the invention relates to a device for converting a voltage with a first DC-DC converter with a relief network, wherein the DC-DC converter is designed as a step-up converter and as a step-down converter.
  • the invention further relates to a method for converting a voltage, which is set high or low by means of a first DC-DC converter, wherein overvoltages in the first DC-DC converter are at least reduced by means of a relieving network.
  • a DC-DC converter If a DC-DC converter is operated in a high-set operation, it may in an uncontrolled shutdown of
  • DC-DC converter arranged to a high voltage stress of the DC-DC converter
  • Relief networks are known from the prior art, by means of which the overvoltages are avoided. A distinction is made between purely passive and low-loss relief networks.
  • the purely passive relief network is generally formed of a series or parallel circuit of ohmic resistance and an electrical capacitor and optionally a diode (also called RC or RCD member short).
  • the relief network serves to compensate for voltage spikes, the voltage spikes in the capacitor causing a current flow which leads to an electrical charge of the capacitor.
  • electrical circuits also known as snubber circuits
  • snubber circuits which store at the resonance point in Abschaltmoment superfluous or harmful energy for a short time in the relief network, in particular in the capacitor and delivered again at the moment of switching.
  • This effect is usually usable only for certain operating points and especially critical in time, since it is a resonance between the power unit and the relief network. Thus caused by the resonance effects used as low as possible losses.
  • the invention is therefore based on the object of specifying an apparatus and a method for converting a voltage with a first DC-DC converter and an associated relief network, which is simple and inexpensive to implement.
  • the inventive device for converting a voltage comprises a first DC-DC converter
  • the first DC-DC converter is designed as a boost converter and as buck converter.
  • the discharge network on the output side, a recuperation converter is connected electrically downstream.
  • a stored energy in the relief network is adjusted by means of a recuperation converter, wherein the recuperation - converter is a second DC-DC converter, which is designed as a boost converter and buck converter.
  • the relief network it is advantageously possible to avoid an overvoltage at semiconductor elements arranged in the first DC-DC converter both in the boosting operation and in the step-down operation of the first DC-DC converter. It follows that voltage breakdowns of the semiconductor elements are prevented in an uncontrolled shutdown of the first DC-DC converter, in particular in a high-set operation, so that there is an increase in the life of the entire electrical circuit.
  • By adjusting the energy stored in the relief network to a predetermined voltage level by means of the recuperation converter a low-loss regeneration of the energy is achieved in various points of the device.
  • Condenser and a resistor formed.
  • a diode may be provided.
  • the capacitor, the resistor and optionally the diode may be connected in parallel.
  • This can also be a largely lossless relief network, which temporarily stores superfluous energy at the point of resonance in the switch-off moment and releases it again at the switch-on moment.
  • the elements of the relief network such as capacitor, resistor and / or diode are tuned to the power unit.
  • Relief network used in combination with the switching power supply for energy recovery in at least one operating point, in particular at the resonance point.
  • the first DC-DC converter can be operated in a normal mode or a pulse mode.
  • FIG. 1 schematically shows a first DC-DC converter with a relief network and a recuperation Converter for energy recovery in an input side of the first DC-DC converter
  • FIG. 2 schematically shows a first DC-DC converter with a relief network and a recuperation
  • FIG. 3 schematically shows a first DC-DC converter with a discharge network and a Rekuperations-
  • FIG. 4 schematically shows a first DC-DC converter with a relief network and a recuperation converter for energy recovery in an auxiliary voltage supply of the output side of the first DC-DC converter
  • Figure 5 schematically a circuit diagram of a
  • the capacitor C does not necessarily have to be set to ground potential
  • FIG. 6 schematically shows a temporal signal sequence of a pulse packet mode and a normal mode
  • FIG. 7 schematically shows a circuit diagram of a possible embodiment of a recuperation converter.
  • Figures 1 to 4 represent a first
  • DC converter 1 by means of which an electrical voltage U is increased in a boost mode H or reduced in a step-down operation T, wherein in the first DC-DC converter 1 semiconductor elements not shown are arranged.
  • a relief network 2 is provided.
  • This is in particular a conventional relief network, which is formed in particular of a series connection of an electrical capacitor C and an ohmic resistor R and optionally a diode D.
  • the voltage spikes cause a current flow in the electrical capacitor C, so that an electrical charge, and thus electrical energy, is formed in the capacitor C, which is stored.
  • a recuperation converter 3 is electrically connected downstream.
  • the recuperation converter 3 is designed as a second DC-DC converter, which can also be used as a boost converter and buck converter.
  • the energy stored in the relief network 2, in particular in the capacitor C is regulated to a predetermined voltage level, i. H. set high or low, and returned.
  • a predetermined voltage level i. H. set high or low.
  • the level of the voltage level depends on where the electrical circuit is to be returned.
  • Capacitor C stored energy to the voltage level of the voltage U LV and supplies the energy to the first DC-DC converter 1 on the input side again.
  • FIG. 2 shows an electrical circuit in which the stored energy in the capacitor C is supplied by means of the recuperation converter 3 of the output side LV of the first DC-DC converter 1, so that the recuperation converter 3 is electrically connected thereto.
  • the recuperation converter 3 provides the in the
  • Capacitor C stored energy to the voltage level of the voltage U HV and supplies the energy to the first DC-DC converter 1 on the output side again.
  • an auxiliary voltage supply 4, 5 can be arranged both at the input side LV and at the output side HV, by means of, for example, a controller (not shown in detail) DC converter 1 or arranged in this semiconductor elements are electrically supplied.
  • recuperation converter 3 in accordance with FIG. 3 so electrically to the auxiliary voltage supply 4 of the input side LV that the energy stored in the capacitor C is at the voltage level of the
  • Auxiliary power supply 4 is set and the energy is supplied to this.
  • the recuperation converter 3 according to FIG. 4 is connected upstream of the auxiliary voltage supply 5 of the output side HV in such a way that the energy stored in the capacitor C is at the voltage level of the
  • Auxiliary power supply 5 is set and the energy is supplied to this.
  • Figure 5 shows schematically in detail an embodiment of a relief network 2 of an interconnection of capacitor C and two diodes Dl and D2 and their coupling with the recuperation converter 3, which serves to regenerate the energy stored in the capacitor C.
  • the relief network 2 via the two diodes Dl and D2 on the input side to the output side HV or the input side LV of the DC-DC converter 1 at a suitable point coupled such that excess energy, in particular voltage surges delivered to the relief network 2 and stored there in the capacitor C.
  • FIG. 6 shows schematically a possible temporal signal sequence for operating the DC-DC converter 1, in particular in Hochsetz horrinsky with operating points, which can only be represented by a so-called skip or Pulsbmode. At this operating point, a great deal of cut-off energy arises, which in the capacitor C of the
  • Relief network is cached and fed back via the recuperation converter 3 in the network. In normal operation of the DC-DC converter 1, this is operated in normal mode.
  • FIG. 7 schematically shows a circuit diagram of a possible embodiment of a recuperation converter 3 with the input-side connection A to the relief network 2 and the output-side connection B to the output side of the
  • the recuperation converter 3 comprises a controllable switch Sl, via which the energy stored in the capacitor C of the discharge network 2 is set to the voltage level of the output side HV or input side LV of the DC-DC converter 1.
  • the recuperation converter 3 comprises the switch Sl, which is grounded via a resistor Rl.
  • the recuperation converter 3 in each case comprises capacitors C 1, C 2 for intermediate storage.
  • the recuperation converter 3 may comprise a galvanic element 6 for galvanic isolation.
  • the output side is a blocking diode D3 in order to avoid feedback from the DC-DC converter 1. LIST OF REFERENCE NUMBERS

Landscapes

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

Abstract

L'invention concerne un procédé et un dispositif de conversion d'une tension (ULV, UHV), qui comprend un premier convertisseur continu-continu (1) à circuit d'amortissement (2), le premier convertisseur continu-continu (1) étant réalisé sous la forme d'un convertisseur élévateur et abaisseur. Selon l'invention, un convertisseur à récupération (3) est monté électriquement en aval du circuit d'amortissement (2) côté sortie.
PCT/DE2008/002045 2007-12-11 2008-12-10 Dispositif et procédé de conversion d'une tension Ceased WO2009074143A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008003717T DE112008003717A5 (de) 2007-12-11 2008-12-10 Vorrichtung und Verfahren zur Wandlung einer Spannung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007059585.0 2007-12-11
DE102007059585A DE102007059585A1 (de) 2007-12-11 2007-12-11 Vorrichtung und Verfahren zur Wandlung einer Spannung

Publications (2)

Publication Number Publication Date
WO2009074143A2 true WO2009074143A2 (fr) 2009-06-18
WO2009074143A3 WO2009074143A3 (fr) 2009-09-17

Family

ID=40679821

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/002045 Ceased WO2009074143A2 (fr) 2007-12-11 2008-12-10 Dispositif et procédé de conversion d'une tension

Country Status (2)

Country Link
DE (2) DE102007059585A1 (fr)
WO (1) WO2009074143A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010027863A1 (de) * 2010-04-16 2011-12-01 Bayerische Motoren Werke Aktiengesellschaft Bordnetz für ein Kraftfahrzeug
JP6709965B2 (ja) * 2016-12-27 2020-06-17 パナソニックＩｐマネジメント株式会社 スナバ回路、及びそれを用いた電力変換システム

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3837561A1 (de) * 1988-11-04 1990-05-10 Bernhard Erdl Gleichspannungswandler nach dem prinzip des eintaktdurchflusswandlers
US5898581A (en) * 1997-08-27 1999-04-27 Lucent Technologies Inc. Active snubber for buck-based converters and method of operation thereof
US6043636A (en) * 1997-10-20 2000-03-28 Diversified Technologies, Inc. Voltage transient suppression
US5943224A (en) * 1998-04-06 1999-08-24 Lucent Technologies Inc. Post regulator with energy recovery snubber and power supply employing the same
DE19846319C1 (de) * 1998-10-08 2000-02-17 Daimler Chrysler Ag Energieversorgungsschaltung für ein Kraftfahrzeugbordnetz mit zwei Spannungsversorgungszweigen
DE10003731B4 (de) * 2000-01-28 2012-01-26 Robert Bosch Gmbh Verwendung einer elektronischen Schaltvorrichtung zum zeitweiligen Verbinden einer Batterie mit einem Verbraucher in einem Zweispannungsbordnetz
US6452815B1 (en) * 2001-02-22 2002-09-17 Lizhi Zhu Accelerated commutation for passive clamp isolated boost converters
JP3703026B2 (ja) * 2002-06-03 2005-10-05 株式会社千代田 双方向ｄｃ−ｄｃコンバータ用スナバ回路および双方向ｄｃ−ｄｃコンバータ
US7180759B2 (en) * 2004-11-03 2007-02-20 Square D Company Push-pull inverter with snubber energy recovery
US7342811B2 (en) * 2005-05-27 2008-03-11 Cherokee International Corporation Lossless clamp circuit for DC-DC converters

Also Published As

Publication number Publication date
DE112008003717A5 (de) 2010-11-11
WO2009074143A3 (fr) 2009-09-17
DE102007059585A1 (de) 2009-06-18

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