EP4578092A1 - Procédé de fonctionnement d'un convertisseur indirect pour charger un condensateur de liaison à courant continu - Google Patents

Procédé de fonctionnement d'un convertisseur indirect pour charger un condensateur de liaison à courant continu

Info

Publication number
EP4578092A1
EP4578092A1 EP23735322.2A EP23735322A EP4578092A1 EP 4578092 A1 EP4578092 A1 EP 4578092A1 EP 23735322 A EP23735322 A EP 23735322A EP 4578092 A1 EP4578092 A1 EP 4578092A1
Authority
EP
European Patent Office
Prior art keywords
voltage
flyback converter
target charging
intermediate circuit
charging
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.)
Pending
Application number
EP23735322.2A
Other languages
German (de)
English (en)
Inventor
Markus Klein
Daniel Zirkel
Gholamabas Esteghlal
Thomas Kiewnick
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 EP4578092A1 publication Critical patent/EP4578092A1/fr
Pending 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
    • H02M3/325—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 triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—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 triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—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 triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • 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
    • H02M3/325—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 triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—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 triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—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 triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/0003—Details of control, feedback or regulation circuits
    • H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
    • B60L15/007—Physical arrangements or structures of drive train converters specially adapted for the propulsion motors of electric vehicles
    • 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
    • H02M1/36—Means for starting or stopping 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
    • H02M3/22—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
    • H02M3/325—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 triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—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 triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33507—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 triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
    • H02M3/33515—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 triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with digital control

Definitions

  • a method for operating a flyback converter for charging an intermediate circuit capacitor is provided.
  • the flyback converter can be connected to a low-voltage network on the input side and to a high-voltage network on the output side.
  • the high-voltage network includes the intermediate circuit capacitor to be charged.
  • the flyback converter is preferably connected to the low-voltage network on the input side and to the high-voltage network on the output side.
  • connected or connectable preferably means electrically conductive or galvanically connected, coupled or connected together.
  • the target charging current is reduced before the transition from specifying the target charging current value to specifying the target charging voltage value.
  • the target charging current is reduced, for example to 10% of the predetermined target charging current. This measure advantageously avoids large voltage overshoots when the first voltage value is reached by means of the current control.
  • the duty cycle is continuously adopted during the transition from specifying the target charging current value to specifying the target charging voltage value.
  • the duty cycle that was last present in the current-controlled phase is adopted and used at the beginning of the voltage-controlled phase, in particular by initializing the voltage regulator.
  • the initialization of the voltage regulator leads to a steady transition, which preferably avoids an abrupt change in the steady-state operating state. Overcurrents and overvoltages at the first circuit breaker are thus advantageously avoided.
  • the charging current decreases continuously while the target charging voltage value is specified.
  • a current that characterizes the current through the first diode is determined and the method for operating the flyback converter is ended after the determined current falls below a first predeterminable current value, preferably during the step of providing the target charging voltage.
  • the method for operating the flyback converter is ended.
  • a termination criterion is advantageously provided which reliably prevents overcurrents and overvoltages at the first circuit breaker despite possible energy flow reversal.
  • the method includes a further step before specifying the target charging current value: activating the first power switch using a predeterminable first duty cycle for a predeterminable period of time.
  • an active clamping circuit is preferably provided on the output side of the flyback converter.
  • the active clamping circuit preferably comprises a series connection of a third capacitor and a second power switch, the series connection being connected in parallel to the secondary winding of the transformer.
  • the method includes a further step before providing the target charging current: initializing a current regulator of the flyback converter.
  • Initializing the current controller preferably includes determining the duty cycle to be specified for controlling the first power switch depending on the determined voltage and the target charging current to be set for charging the intermediate circuit capacitor.
  • a method is advantageously provided which enables rapid, non-destructive charging of the intermediate circuit capacitor.
  • a flyback converter is advantageously provided for quickly charging an intermediate circuit capacitor.
  • the invention further relates to a drive train with a described flyback converter and preferably with power electronics and/or an electric drive.
  • a drive train is used, for example, to drive an electric vehicle.
  • the method and the flyback converter enable efficient operation of the drive train.
  • FIG. 2 shows a second schematic representation of a flyback converter for charging an intermediate circuit capacitor
  • Figure 3 shows a schematically illustrated vehicle with a drive train
  • FIG. 1 shows a first schematic representation of a flyback converter 250 or a possible circuit topology for charging an intermediate circuit capacitor 210.
  • the intermediate circuit capacitor 210 is preferably connected to the high-voltage network 205 via the output connections 242_p, 242_n.
  • 1 shows a flyback converter 250, which is set up to carry out a method for operating the flyback converter 250 for charging the intermediate circuit capacitor 210 in a high-voltage network 205.
  • the flyback converter 250 also called a flyback converter, can be connected, preferably connected, to a low-voltage network 295 on the input side and to a high-voltage network 205 on the output side.
  • the high-voltage network 205 includes the intermediate circuit capacitor 210.
  • the flyback converter 250 includes 244_p, 244_n on the input side between the input connections a series connection of a first power switch 252 and a primary winding 254 of a transformer 260.
  • the flyback converter comprises a series connection between the output connections 242_p, 242_n of a secondary winding 256 of the transformer 260 and a first diode 258 connected in the reverse direction, with a first capacitor 262 between the on the output side Output connections 242_p, 242_n are connected.
  • the primary winding 254 and the secondary winding 256 of the transformer 260 are preferably wound in opposite directions to define the current direction on the primary and secondary sides.
  • a second capacitor 264 is preferably connected on the input side between the input connections 244_p, 244_n in order to smooth the voltage between the input connections, even when the flyback converter is operating in reverse.
  • the first diode 258 is preferably designed as a body diode of a third power switch 268.
  • the flyback converter can transmit electrical energy from the output side to the input side by controlling the third power switch 268.
  • the direct voltage of the high-voltage network 205 is preferably converted into an alternating voltage by means of the third power switch 268 so that the transformer 260 transmits it.
  • the flyback converter 250 includes an inductive coupling or a transformer and thus electrically isolates the high-voltage network 205 from the low-voltage network 295.
  • the low-voltage network 295 is preferably supplied with electrical energy from the high-voltage network 205.
  • the flyback converter 250 is preferably controlled backwards and in the step-down converter operating mode.
  • the low-voltage network 295 preferably includes a low-voltage energy source 222, for example a battery or accumulator, and other consumers (not shown), for example control devices.
  • a control device 255 is designed and/or set up to determine a voltage Ux, to specify a target charging current value l_L and to specify a corresponding duty cycle Tx and to specify a target charging voltage value U_L.
  • the control device 255 preferably includes a current regulator 270 or a voltage regulator for determining the corresponding duty cycle depending on the target charging current value or the target charging voltage value.
  • the control device 255 and the current regulator 270 are shown outside the flyback converter 250, whereby the control device 255 and the current regulator 270 can also be arranged inside the flyback converter 250.
  • FIG. 3 shows a schematically illustrated vehicle 400 with a drive train 300.
  • the illustration shows an example of a vehicle 400, which can be used equally on land, on water and in the air.
  • the drive train 300 includes the flyback converter 250 and preferably power electronics, a pulse inverter 272.
  • the drive train preferably further comprises an energy source 220, the intermediate circuit capacitor 210, an electrical machine 280 and/or a low-voltage energy source 222.
  • the pulse inverter 272 is preferably used to supply the electrical machine 280 with electrical energy from the energy source 220.
  • the pulse inverter 272 preferably includes the intermediate circuit capacitor 210, so that the flyback converter 250 is connected to the pulse inverter 272 during operation.

Landscapes

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

Abstract

L'invention concerne un procédé (100) de fonctionnement d'un convertisseur indirect (250) pour charger un condensateur de liaison CC (210), comprenant les étapes suivantes consistant à : déterminer (120) une tension (Ux) caractérisant la tension au niveau du condensateur de liaison CC (210), spécifier (140) une valeur cible de courant de charge (I_L) pour charger le condensateur de liaison CC (210) et spécifier un rapport cyclique (Tx) correspondant pour commander un premier commutateur de puissance (252) tant que la tension déterminée (Ux) est inférieure à une première valeur de tension (U1), spécifier (150) une valeur cible de tension de charge (U_L), tant que la tension déterminée (Ux) correspond à la première valeur de tension (U1) ou que la tension déterminée (Ux) dépasse la première valeur de tension (U1) et que la tension déterminée (Ux) est inférieure à une seconde valeur de tension (U2).
EP23735322.2A 2022-08-26 2023-06-27 Procédé de fonctionnement d'un convertisseur indirect pour charger un condensateur de liaison à courant continu Pending EP4578092A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022208842.5A DE102022208842A1 (de) 2022-08-26 2022-08-26 Verfahren zum Betrieb eines Sperrwandlers zum Laden eines Zwischenkreiskondensators
PCT/EP2023/067456 WO2024041779A1 (fr) 2022-08-26 2023-06-27 Procédé de fonctionnement d'un convertisseur indirect pour charger un condensateur de liaison à courant continu

Publications (1)

Publication Number Publication Date
EP4578092A1 true EP4578092A1 (fr) 2025-07-02

Family

ID=87036687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23735322.2A Pending EP4578092A1 (fr) 2022-08-26 2023-06-27 Procédé de fonctionnement d'un convertisseur indirect pour charger un condensateur de liaison à courant continu

Country Status (5)

Country Link
US (1) US12603579B2 (fr)
EP (1) EP4578092A1 (fr)
CN (1) CN119790586A (fr)
DE (1) DE102022208842A1 (fr)
WO (1) WO2024041779A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2662557B1 (fr) 1990-05-22 1997-07-25 Thomson Brandt Armements Convertisseur basse tension-haute tension.
JP3620118B2 (ja) * 1995-10-24 2005-02-16 松下電器産業株式会社 定電流・定電圧充電装置
JP2009011073A (ja) * 2007-06-28 2009-01-15 Panasonic Corp スイッチング電源装置
US7978558B2 (en) 2008-03-24 2011-07-12 Active-Semi, Inc. In-circuit programming of output voltage and output current characteristics of a PSR power supply
CN101867295B (zh) 2010-03-16 2014-07-16 成都芯源系统有限公司 一种电路及控制方法
DE102020206987A1 (de) 2020-06-04 2021-12-09 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren und Vorrichtung zum Laden eines Zwischenkreiskondensators in einem Hochvoltnetz
GB2619757B (en) * 2022-06-16 2024-12-25 Dyson Technology Ltd AC-to-AC converter

Also Published As

Publication number Publication date
US12603579B2 (en) 2026-04-14
CN119790586A (zh) 2025-04-08
DE102022208842A1 (de) 2024-02-29
WO2024041779A1 (fr) 2024-02-29
US20260066802A1 (en) 2026-03-05

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