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WO2010094547A1 - Procédé et dispositif de chargement d'un condensateur de circuit intermédiaire - Google Patents

Procédé et dispositif de chargement d'un condensateur de circuit intermédiaire Download PDF

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Publication number
WO2010094547A1
WO2010094547A1 PCT/EP2010/051069 EP2010051069W WO2010094547A1 WO 2010094547 A1 WO2010094547 A1 WO 2010094547A1 EP 2010051069 W EP2010051069 W EP 2010051069W WO 2010094547 A1 WO2010094547 A1 WO 2010094547A1
Authority
WO
WIPO (PCT)
Prior art keywords
voltage
inductive component
intermediate circuit
charging
link capacitor
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/EP2010/051069
Other languages
German (de)
English (en)
Inventor
Stefan Butzmann
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2010094547A1 publication Critical patent/WO2010094547A1/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
    • H02M5/00—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC
    • H02M5/42—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters
    • H02M5/44—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC
    • H02M5/453—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M5/458—Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only

Definitions

  • the invention relates to a method for charging at least one intermediate circuit capacitor, which is arranged in a intermediate circuit between a DC voltage source and a power grid.
  • a method for charging the DC link capacitor is known, for example, for the DC link capacitor of an electromechanical converter system designed as a drive system of an electric or hybrid vehicle or for the DC link capacitor of a wind turbine (WKA) electromechanical converter system.
  • Each of these electromechanical converter systems has a voltage source which is designed as an electrical memory connected as a memory arrangement, a circuit and an intermediate circuit which is electrically connected between the electrical memories and the circuit and has a parallel arrangement with the memory arrangement
  • the electric circuit has at least one electric machine designed as a generator and / or drive machine and a converter.
  • the electrical machine forms the electromechanical converter of the electromechanical converter system and is electrically connected to the intermediate circuit via the intermediate converter, in particular an inverter.
  • the electrical storage are preferably designed as rechargeable batteries (accumulators) that can be discharged and recharged several times.
  • two power switches are typically provided, which are each arranged in one of two supply lines between the memory arrangement and the intermediate circuit. These power switches are preferably designed as contactors - the so-called main contactors - which are opened (disconnected) for disconnecting the memory arrangement from the circuit.
  • the two circuit breakers are switched on again, an enormous current would temporarily flow into the uncharged or only partially charged intermediate circuit capacitor, so that first a so-called pre-charging contactor connected in the first supply line parallel to the first circuit breaker with mostly integrated protective resistor and the one arranged in the second supply line second circuit breaker are turned on. As a result, the DC link capacitor is first charged with a limited current. As soon as the voltage across the capacitor is sufficiently high, the first one becomes
  • Circuit breaker switched on Disadvantages of the method described are the relatively high costs of the arrangement of main contactors and pre-charging contactor. In addition, in memory arrangements with Li-ion batteries due to safety regulations, the voltage across the DC link capacitor must also be monitored, which requires additional, independent switching.
  • the intermediate circuit is electrically coupled to a further power network via at least one inductive component, Ches in the inductive component at least once a temporary magnetic field builds up, being charged by an induced in the subsequent degradation of this magnetic field in the inductive component voltage of the DC link capacitor.
  • the DC link capacitor is not charged by the voltage source, but on the other power grid.
  • the DC voltage source is electrically separable connected to the DC link.
  • each supply line between the DC voltage source and the intermediate circuit preferably has a power switch. Charging the DC link capacitor via the additional power supply eliminates the need for a precharge contactor.
  • the DC link capacitor is electrically parallel to the
  • the DC voltage source is connected.
  • the DC voltage source is preferably designed as a memory arrangement with at least one electrical memory.
  • the DC voltage source is in particular a DC voltage source which generates a voltage U of 120 volts or more than 120 volts (U ⁇ 120 V).
  • the DC voltage source, the circuit and the intermediate circuit with the DC link capacitor are preferably part of an electromechanical converter system.
  • the electric circuit has at least one electric machine designed as a generator and / or drive machine and a converter.
  • the electrical machine forms the electromechanical converter of the electromechanical converter system and is electrically connected to the intermediate circuit via the intermediate converter, in particular an inverter.
  • the electric machine is preferably an AC machine and the circuit is an AC circuit.
  • the electrical storage is preferably designed as a rechargeable battery (accumulator), which has several
  • the DC link capacitor has the task of intercepting short-term current peaks of the downstream inverter (inverter).
  • the inductive component and at least one diode are arranged in series in a current path connected in parallel with the intermediate circuit capacitor. It is advantageously provided that a capacitive component is connected in parallel with the current path.
  • the inductive component is in particular a transformer, which is connected in the current path with its primary winding in the further power supply network and with its secondary winding.
  • the charging of the DC link capacitor preferably takes place by means of a DC component having the inductive component, the diode and at least one switch, also called DC-DC converter or "chopper.”
  • the switch is preferably a bipolar transistor and / or a field-effect transistor , in particular a MOSFET (metal oxide semiconductor field-effect transistor), an IGBT (IGBT: insulated-gate bipolar transistor) and / or a thyristor
  • the DC-DC converter is preferably designed as a flyback converter in a DC-DC converter with an inductive transformer
  • the switch is connected on the side of the primary winding, that is to say in the further power supply, and the primary winding and the secondary winding preferably have different numbers of turns.
  • the charging with the flyback converter is as follows: If the switch is closed, a current flows through the switch and the primary winding. When the switch is opened, the energy stored in the inductance is transmitted to the secondary side and the DC link capacitor is charged via the diode.
  • the voltage across the secondary winding of the transformer is equivalent to the voltage across the DC link capacitor plus a diode voltage of the diode.
  • a voltage proportional to the voltage across the secondary winding now also contacts the primary winding of the transformer. This can be measured directly.
  • the voltage across the primary winding of the transformer shortly after opening (turning off) the switch is thus substantially proportional (possibly translated by the turns ratio of the transformer) to the voltage across the link capacitor.
  • the voltage at the DC link capacitor is determined by measuring the voltage across the primary winding of the transformer.
  • the measurement result is -potentialgetrennt of the potential of the DC voltage source and the power supply on the side of the other power grid of a computing device, in particular a microcontroller to provide.
  • the charging of the DC link capacitor is a gradual charging, in which the inductive component successively several times a temporary magnetic field is built, in each case by the induced in the subsequent degradation of this magnetic field in the inductive component of the DC link capacitor via the Diode is charged further. The charge thus takes place in charge levels.
  • a maximum possible power transfer between the DC voltage source and the power grid via the intermediate circuit is at least twice as high, in particular at least ten times as high as a maximum possible power transfer between the DC voltage source and the other power grid the inductive component. Since no large powers are transmitted by means of the inductive element - it merely serves to charge the intermediate circuit capacitor and / or to measure the voltage - this can be made very small and cost-efficient. The same applies to the diode, the switch and the measuring device for measuring the voltage across the primary winding.
  • the further power network is a DC network.
  • the further power supply has a second operating voltage of less than 120 volts, in particular of 12 volts.
  • the invention further relates to a device for charging at least one intermediate circuit capacitor, which is arranged in an intermediate circuit between a DC voltage source and a power grid.
  • the device comprises a DC-DC converter having a current path connected in parallel to the DC-link capacitor, in which at least one inductive component and at least one diode are connected in series and which further comprises at least one switch with which the inductive component for Voltage is electrically connected to another power supply.
  • the DC-DC converter is in particular a flyback converter.
  • the device has a capacitive component connected in parallel with the current path.
  • the inductive component is a transformer which is connected to its primary winding in the further power grid and its secondary winding in the current path.
  • the device has a measuring device, which is connected to measure the voltage at the primary winding with this.
  • the device has a computing device arranged in the further power network, which determines a voltage at the intermediate circuit capacitor from the measured voltage at the primary winding.
  • FIG. 1 shows a DC voltage source, an intermediate circuit with a DC link capacitor and a device for charging the DC link capacitor, which is electrically connected between the DC voltage source and the DC link and
  • the DC link 2 is in turn between the DC voltage source 1 and a not shown circuit electrically interposed.
  • the DC voltage source 1 is designed as a memory arrangement with at least one electrical memory.
  • the memory is preferably a rechargeable bare battery, in particular a Li-ion battery, or the memory are preferably rechargeable batteries, in particular a Li-ion batteries.
  • the DC voltage source 1 is electrically connected to the device via two supply lines 5, 6. In each of the leads 5, 6 is designed as a main contactor circuit breaker 7, 8 is arranged.
  • Charging the DC link capacitor 4 has a current path 9 in which an inductive component 10 and a diode 11 are arranged in a serial arrangement. Connected in parallel with this current path 9, the device 3 has a further current path 12, in which a capacitive component 13, in particular a further capacitor, is arranged. Both current paths 9, 12 of the device 3 are arranged electrically parallel to the DC voltage source 1 and the DC link capacitor 4.
  • the inductive component 10 is designed as a transformer 14 with primary winding 15 and secondary winding 16 and is connected to the secondary winding 16 in
  • the device 3 for charging the DC link capacitor 4 further comprises a switch 18 arranged in the further mains 17. This switch 18 and the primary winding 15 are electrically connected in series in the further power grid 17.
  • the device 3 for charging the DC link capacitor 4 furthermore has a measuring device 20, which is connected in parallel with the latter for measuring the voltage drop across the primary winding 15.
  • the measuring device 20 is connected downstream in the further power grid 17 a computing device, not shown, which determines from the measured voltage across the primary winding a voltage at the DC link capacitor.
  • the charging of the DC link capacitor 4 by means of the device 3 with the DC chopper 19 as follows: If the switch 18 is closed, so a current flows through the switch 18 and the primary winding 15. When opening the switch 18, the stored energy in the inductance is transferred to the secondary side -also the secondary winding 16- and the DC link capacitor 4 via the non-blocking in this current direction diode 11 - load.
  • the voltage across the secondary winding 16 of the transformer 14 is equivalent to the voltage across the DC link capacitor 4 plus a diode voltage of the diode 1 1.
  • a voltage across the secondary winding 16 proportional voltage is now also across the primary winding 15 of the transformer 14 at , This can be measured directly by means of the measuring device 20.
  • the voltage across the primary winding 15 of the transformer 14 shortly after opening (switching off) the switch 18 is thus substantially proportional (possibly translated by the turn ratio of primary to secondary winding of the transformer 14) to the voltage across the intermediate circuit capacitor. 4
  • FIGS. 2A to 2D show four diagrams in which the time-dependent current profiles and voltage profiles at the inductive component 10 and at the intermediate circuit capacitor 4 are plotted over time t when it is being charged.
  • the switch 18 of the DC adjuster 19 is closed and a current flows through the switch 18 and the primary winding 15 (FIG. 2A). If the switch 18 is then opened at time T2, the inductively stored energy is transferred to the secondary side of the transformer 14 and the capacitive component 13 and the intermediate circuit capacitor 4 are charged via the diode 11. This results in the voltage curve shown in FIG. 2B on the secondary winding 16 and the current waveform shown in the intermediate circuit 2 in FIG. 2C.
  • the voltage across the primary winding 15 shortly after opening (switching off) of the switch is proportional to the voltage across the latter DC link capacitor 4 (Fig. 2D) and can be measured in the further power grid 17 of the measuring device 20.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Dc-Dc Converters (AREA)

Abstract

L'invention concerne un procédé de chargement d'au moins un condensateur de circuit intermédiaire (4) disposé dans un circuit intermédiaire (2) monté de façon intermédiaire entre une source de tension continue (1) et un réseau électrique. Selon l'invention, le circuit intermédiaire (2) est connecté électriquement au moyen d'au moins un composant inductif (10) à un autre réseau électrique (17) établissant au moins une fois un champ magnétique temporaire dans le composant inductif (10), le condensateur de circuit intermédiaire (4) étant chargé par une tension induite lors de l'évanouissement consécutif de ce champ magnétique dans le composant inductif (10). L'invention concerne également un dispositif correspondant (3) de chargement d'au moins un condensateur de circuit intermédiaire (4).
PCT/EP2010/051069 2009-02-18 2010-01-29 Procédé et dispositif de chargement d'un condensateur de circuit intermédiaire Ceased WO2010094547A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009000960.4 2009-02-18
DE200910000960 DE102009000960A1 (de) 2009-02-18 2009-02-18 Verfahren und Vorrichtung zum Aufladen eines Zwischenkreis-Kondensators

Publications (1)

Publication Number Publication Date
WO2010094547A1 true WO2010094547A1 (fr) 2010-08-26

Family

ID=42041559

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/051069 Ceased WO2010094547A1 (fr) 2009-02-18 2010-01-29 Procédé et dispositif de chargement d'un condensateur de circuit intermédiaire

Country Status (2)

Country Link
DE (1) DE102009000960A1 (fr)
WO (1) WO2010094547A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022128819A1 (de) 2022-10-31 2024-05-02 Rolls-Royce Solutions GmbH Wandlerschaltung, Gleichspannungswandler, Stromversorgungseinrichtung sowie Verfahren zum Vorladen eines Zwischenkreises

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010061763B4 (de) 2010-11-23 2024-09-12 Robert Bosch Gmbh Batterie
DE102013223538A1 (de) * 2013-11-19 2014-10-23 Siemens Aktiengesellschaft Schaltungsanordnung und Verfahren zum Erzeugen einer Zwischenkreisspannung für einen Wechselrichter
DE102017004010A1 (de) 2017-04-25 2017-10-19 Daimler Ag Entprellschaltung zur Verhinderung von Schützklebern bei (Traktions)- Batterien

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049361A1 (fr) * 1980-10-06 1982-04-14 International Business Machines Corporation Alimentation en puissance utilisant un convertisseur à oscillateur bloqué
US6219493B1 (en) * 1998-08-19 2001-04-17 Konica Corporation Electronic flash device of a separate excitation oscillating type
WO2007148531A1 (fr) * 2006-06-23 2007-12-27 Toyota Jidosha Kabushiki Kaisha Appareil d'alimentation électrique pour véhicule et véhicule l'incorporant

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049361A1 (fr) * 1980-10-06 1982-04-14 International Business Machines Corporation Alimentation en puissance utilisant un convertisseur à oscillateur bloqué
US6219493B1 (en) * 1998-08-19 2001-04-17 Konica Corporation Electronic flash device of a separate excitation oscillating type
WO2007148531A1 (fr) * 2006-06-23 2007-12-27 Toyota Jidosha Kabushiki Kaisha Appareil d'alimentation électrique pour véhicule et véhicule l'incorporant
EP2034583A1 (fr) * 2006-06-23 2009-03-11 Toyota Jidosha Kabushiki Kaisha Appareil d'alimentation électrique pour véhicule et véhicule l'incorporant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022128819A1 (de) 2022-10-31 2024-05-02 Rolls-Royce Solutions GmbH Wandlerschaltung, Gleichspannungswandler, Stromversorgungseinrichtung sowie Verfahren zum Vorladen eines Zwischenkreises

Also Published As

Publication number Publication date
DE102009000960A1 (de) 2010-08-19

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