DE102010047338B4 - Motor vehicle with circuit arrangement and method for operating such a motor vehicle - Google Patents

Motor vehicle with circuit arrangement and method for operating such a motor vehicle

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Publication number
DE102010047338B4
DE102010047338B4 DE102010047338.3A DE102010047338A DE102010047338B4 DE 102010047338 B4 DE102010047338 B4 DE 102010047338B4 DE 102010047338 A DE102010047338 A DE 102010047338A DE 102010047338 B4 DE102010047338 B4 DE 102010047338B4
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Germany
Prior art keywords
voltage
voltage terminals
motor vehicle
terminals
switch
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Active
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DE102010047338.3A
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German (de)
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DE102010047338A1 (en
Inventor
Josef Winkler
Prof. Dr. Pforr Johannes
Thomas Hackner
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Audi AG
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Audi AG
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Publication of DE102010047338A1 publication Critical patent/DE102010047338A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L7/00Electrodynamic brake systems for vehicles in general
    • B60L7/10Dynamic electric regenerative braking
    • B60L7/14Dynamic electric regenerative braking for vehicles propelled by ac motors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/10Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
    • B60L50/16Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J1/00Circuit arrangements for dc mains or dc distribution networks
    • H02J1/08Three-wire systems; Systems having more than three wires
    • H02J1/082Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/345Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2210/00Converter types
    • B60L2210/10DC to DC converters
    • B60L2210/14Boost converters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2210/00Converter types
    • B60L2210/30AC to DC converters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2210/00Converter types
    • B60L2210/40DC to AC converters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2220/00Electrical machine types; Structures or applications thereof
    • B60L2220/10Electrical machine types
    • B60L2220/12Induction machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2220/00Electrical machine types; Structures or applications thereof
    • B60L2220/50Structural details of electrical machines
    • B60L2220/56Structural details of electrical machines with switched windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20Charging or discharging characterised by the power electronics converter
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/72Electric energy management in electromobility

Abstract

Motor vehicle with a circuit arrangement for coupling two first voltage terminals (A1, A2) of a first side with two second voltage terminals (A'1, A'2) of a second side, to which a higher voltage (UC) is applied, than at the first voltage terminals (A1, A2), wherein the circuit arrangement comprises a rotary field machine (M ') which is provided in a star point circuit whose star point (SP) is coupled to one (A1) of the first voltage terminals, and from which a plurality of phase outputs (P1, P2, P3) in each case via a bridge comprising two transistors each having parallel inverse diodes bridge branch of a multi-phase full bridge, which is operable as a motor or as a generator, as an inverter or as a rectifier, depending on the operating mode of the induction machine (M '), both with one (A'1) of the second voltage terminals is coupled as well as with the other (A'2) of the first and the second S with a switch (S1) for making and breaking a connection between the star point (SP) and the one (A1) of the first voltage terminals, wherein a control device of the motor vehicle is adapted to the switch (S1) in a situation of Rekuperierens of kinetic energy in an energy storage or a Boostens an internal combustion engine of the motor vehicle at high voltage (UC) between the two second voltage terminals (A'1, A'2) and if required a higher power of the induction machine (M ') than that power, which when the neutral point (SP) is firmly connected to one (A1) of the first voltage connections and at twice the voltage between the two second voltage connections (A'1, A'2) as between the two first voltage connections (A1, A2) applied voltage (UBat) can be achieved to open.

Description

  • The invention relates to a motor vehicle having a circuit arrangement for coupling two first voltage terminals of a first side with two second voltage terminals of a second side to which a higher voltage is applied than to the first voltage terminals, wherein the circuit arrangement comprises an induction machine provided in a star point circuit is, whose star point is coupled to one of the first voltage terminals, and of which a plurality of phase outputs respectively via a bridge comprising two transistors, each with parallel inverse diodes bridge branch of a multi-phase full bridge, which depends on the operating mode of the induction machine, namely as a motor or as a generator , is operable as an inverter or as a rectifier, is both coupled to one of the second voltage terminals and coupled to the other of the first and the second voltage terminals. Moreover, the invention relates to a method for operating such a motor vehicle.
  • The invention relates to the subject of on-board networks in motor vehicles; It is particularly important that different voltage consumers require a different electrical system voltage, so that two sub-electrical systems are provided, one with a lower voltage of, for example, 12 V electrical system voltage and one with a slightly higher voltage, for example, 24 V or, for example, 42 V vehicle electrical system voltage ,
  • From the DE 198 38 296 B4 For example, there is known an electric power supply system having a generator comprising phase windings, in particular having an alternator connectable to a battery and connected to consumers through rectifier elements and a voltage converter, and the battery having one side of the generator phase windings and the rectifier elements being connected to the other Side of the phase windings of the generator in connection and designed as a boost converter voltage converter, a switch which is parallel to the rectifier and comprises a diode and a capacitor whose series circuit is parallel to the switch and the rectifier and includes as a choke, the strand inductances of the generator, wherein a second switch between the neutral point and the battery is closed, provided that the induced in the generator Polradspannung is smaller than the battery voltage and reopened when the induced in the generator Polr voltage becomes greater than the battery voltage.
  • The EP 2 062 801 A1 discloses a controller in a power system that is electrically coupled to a plurality of switching elements of a polyphase inverter. The controller turns the plurality of switching elements on and off while a multi-phase motor is activated. Thereby, a voltage of a first energy storage device is converted into a polyphase AC voltage to provide the polyphase AC voltage to the polyphase motor. Thereby, a voltage of a second energy storage device is also raised to charge the first energy storage device by means of the raised voltage across multi-phase windings of the motor. The controller turns the plurality of switching elements on and off while the multi-phase motor is inactivated to thereby increase the voltage of the second energy storage device to charge the first energy storage device by means of the boosted voltage.
  • From the DE 600 00 294 T2 For example, a multiple power source system is known which supplies electrical power to a three-phase motor with Y-connected windings, the multi-power source system comprising: a first DC power source; a power control circuit disposed between the first DC power source and the Y-connected windings of the three-phase motor and having switching elements which are turned on and off to output an electric power output from the first DC power source to the three-phase motor; and a second DC power source different from the first DC power source, wherein one terminal of the second DC power source is connected to one terminal of the DC power source having identical polarity and the other terminal of the second DC power source is connected to a neutral point of the Y-connected windings in the second DC power source three-phase motor is connected.
  • Of the DE 42 26 311 A1 It is proposed to provide in a three-phase alternator for a motor vehicle whose windings are connected in star connection, by tapping the neutral point, a further output voltage which is about half as large as the on-board voltage of the motor vehicle.
  • 1 illustrates a conventional situation in a motor vehicle: A first sub-board network 10 is via a DC-DC converter 12 with a second sub-board network 14 coupled. In the first electrical system 10 There is a starter S for an internal combustion engine of the motor vehicle, a generator G for obtaining electrical energy during operation of the internal combustion engine, a battery B 0 , which is the supply voltage of 12 V, as well as other consumers V 1 and V 2 , which are switchable. In the second subnetwork 14 There is an induction machine that is used in the recuperation of energy, so if energy is to be obtained from the rolling motor vehicle. The induction machine is labeled "M". To supply the higher voltage is an energy storage, eg. B a capacitor or a lithium battery B 1 , provided.
  • The arrangement off 1 can be characterized by the arrangement 2 be replaced, see the CH 6 9872 5 B1 as well as from the wider environment the EP 0682401 B1 and the US 70 23 171 B2 , The latter discloses an electric machine drive having a plurality of inverters for controlling the respective electric machines, which may include a three-phase main drive machine and two-phase auxiliary machines in a hybrid or electric vehicle. The drive has a common control section with only one microelectronic processor for controlling the plurality of inverters, only a gate driver circuit for controlling the conduction of the semiconductor switches in the plurality of inverters and a common DC link, a common DC link filter capacitor and a common DC link voltage sensor. The electric machines can be synchronous machines, asynchronous machines or permanent magnet-excited machines and can be operated by motor or generator.
  • In the arrangement off 2 the battery B of the low voltage side is directly coupled to one of its terminals A 1 with the neutral point SP of a star point circuit of a rotary field machine M '. In the star point circuit, there are a plurality of phase outputs P 1 , P 2 , P 3 of the multi-phase motor generator, and these are each coupled via a transistor to both terminals of an energy store, wherein the one terminal is coupled so that the passage direction of Phase output to terminal A ' 1 runs, and the other terminal A' 2 of the energy storage C is switched so that, starting from the phase outputs Pi, P 2 , P 3, the reverse direction extends to him. In other words, the arrangement is a known boost converter. Any arrangement with an inverter or active or passive rectifier can be used.
  • A disadvantage of the arrangement is that the voltage present at the energy storage voltage U C C can reach twice the voltage of the voltage U Bat roughly applied to the battery B. However, the induction machine M 'then does not work completely efficient. This is especially true when it is a high performance is required, as is the case for example when recuperating or when boosting an internal combustion engine.
  • It is therefore an object of the present invention to ensure better utilization of the induction machine M '.
  • The object is achieved by a motor vehicle having the features of patent claim 1 and in another aspect by a method having the features according to claim 5.
  • The motor vehicle according to the invention is thus characterized by a control device which is adapted to the switch in a situation of Rekuperierens of kinetic energy in an energy storage or a Boostens an internal combustion engine of the motor vehicle at high voltage between the two second voltage terminals and if required a higher power of the induction machine as that power which can be achieved with fixed connection of the neutral point to one of the first voltage terminals and with a voltage twice as high between the two second voltage terminals as the voltage applied between the two first voltage terminals.
  • The switch can be used to decouple or decouple the neutral point from the lower voltage (typically the battery or the 12 V power grid) on the side. Thus, one more degree of freedom is obtained when the switch is open, as far as the prevailing voltages are concerned. The potential at the star point can be set freely, which is also referred to as "floating". The voltage applied to an energy storage voltage can be raised up to three or four times the voltage applied to the battery voltage. Due to the fixed connection of the star point, the machine can not work at full power. The machine can only provide the power that can be achieved with double neutral point voltage, although the voltage at the energy storage has three or four times the value of the battery voltage. By opening the star point switch S1, the neutral point is floating and the machine can be operated at full power; This can be used to recuperate energy or to boost a motor.
  • In an alternative of the invention, an energy storage is connected between the two second voltage terminals, that is, a capacitor or a battery in the manner of in 2 described energy storage. Alternatively or additionally, an energy store may be connected between the one of the second voltage terminals and one of the first voltage terminals. In both cases, the voltage applied to the energy store directly determines the voltage that occurs between the two second voltage terminals on the higher voltage side. The two energy storage can also be provided simultaneously, but one of them is sufficient.
  • The motor vehicle according to the invention is designed to open the switch in a situation of recuperation of kinetic energy into an energy store or a booster of an internal combustion engine of the motor vehicle. If the switch is designed as a transistor, the control device can directly control this switch. In a mechanical switch, the controller controls an actuator such as a relay.
  • In the method according to the invention, in a motor vehicle according to the invention, the switch is opened in a situation of recuperation of kinetic energy into an energy store or of a booster of an internal combustion engine of the motor vehicle; because then again the star point can float, on the side of higher voltage prevails a particularly high voltage, and the induction machine works very efficiently.
  • Hereinafter, a preferred embodiment will be described with reference to the drawings, in which
  • 1 shows a circuit arrangement, as is common in a motor vehicle with two sub-nets,
  • 2 a circuit arrangement showing the circuit arrangement 1 is suitable to replace
  • 3 a circuit arrangement according to a first alternative, which replaces the circuit arrangement 2 occurs, and
  • 4 a circuit arrangement according to a second alternative, which replaces the circuit arrangement illustrated 2 occurs.
  • In the circuit arrangement described above 2 it is provided that the neutral point SP is coupled via a switch S 1 to a connection point A 1 of the low-voltage side. The neutral point SP can therefore be decoupled from the terminal A 1 by opening the switch S 1 . A voltage between the terminals A ' 1 and A' 2 can therefore be particularly high, because the potential at the neutral point SP can adjust freely.
  • In the alternative according to 3 is connected between the two second terminals A ' 1 and A' 2 a capacity as energy storage C (as well as in 2 ), over which the voltage U C drops, which can be particularly high. In the alternative according to 4 is an energy storage C 'connected between the two terminals A 1 and A' 1 , via which the voltage U C1 drops. The voltage U C1 and the voltage applied to the battery B U Bat together result in the voltage U C , which drops across the two second terminals A ' 1 and A' 2 . Also in the alternative as in accordance 4 the star point SP is floating.
  • Due to the fact that in the circuit arrangements according to 3 and 4 Particularly high voltages U C can be achieved on the high voltage side and the star point is floating, the induction machine M 'can work very efficiently, which is useful for example during recuperation, or when an internal combustion engine is to be boosted. In this case, a control device, not shown in the figures, only needs to open the switch S1.

Claims (5)

  1. Motor vehicle with a circuit arrangement for coupling two first voltage terminals (A 1 , A 2 ) of a first side with two second voltage terminals (A ' 1 , A' 2 ) of a second side, at which a higher voltage (U C ) is present, than at the first voltage terminals (A 1 , A 2 ), the circuit arrangement comprising a rotating field machine (M ') provided in a star point circuit whose neutral point (SP) is coupled to one (A 1 ) of the first voltage terminals, and one of A plurality of phase outputs (P 1 , P 2 , P 3 ) in each case via a bridge comprising two transistors, each with parallel inverse diodes bridge branch of a multi-phase full bridge, depending on the operating mode of the induction machine (M '), namely as a motor or as a generator, as Inverter or as a rectifier is operable, both with one (A ' 1 ) of the second voltage terminals is coupled as well as with the other (A' 2 ) de The first and second voltage terminals are coupled to a switch (S 1 ) for making and breaking a connection between the neutral point (SP) and the one (A 1 ) of the first voltage terminals, wherein a control device of the motor vehicle is configured to switch (S 1 ) in a situation of Rekuperierens kinetic energy in an energy storage or a Boostens an internal combustion engine of the motor vehicle at high voltage (U C ) between the two second voltage terminals (A ' 1 , A' 2 ) and, if required, a higher power of the induction machine (M ') as that power, which with fixed connection of the star point (SP) to the one (A 1 ) of the first Voltage connections and at a voltage twice as high between the two second voltage terminals (A ' 1 , A' 2 ) as the between the two first voltage terminals (A 1 , A 2 ) voltage applied (U Bat ) can be achieved to open.
  2. Motor vehicle according to claim 1, characterized in that the high voltage (U C ) between the two second voltage terminals (A ' 1 , A' 2 ) up to three times the value between the two first voltage terminals (A 1 , A 2 ) voltage ( U Bat ), in particular up to four times.
  3. Motor vehicle according to one of the preceding claims, characterized by an energy store (C), which is connected between the two second voltage terminals (A ' 1 , A' 2 ).
  4. Motor vehicle according to one of the preceding claims, characterized by an energy store (C ') which is connected between the one (A' 1 ) of the second voltage terminals and the one (A 1 ) of the first voltage terminals.
  5. Method for operating a motor vehicle according to one of claims 1 to 4, characterized in that the switch (S 1 ) is opened in a situation of recuperation of kinetic energy in an energy storage or a boost of an internal combustion engine of the motor vehicle.
DE102010047338.3A 2010-10-01 2010-10-01 Motor vehicle with circuit arrangement and method for operating such a motor vehicle Active DE102010047338B4 (en)

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DE102013205413A1 (en) * 2013-03-27 2014-10-02 Robert Bosch Gmbh Method for operating a power supply unit for a motor vehicle electrical system
DE102013206296A1 (en) * 2013-04-10 2014-10-16 Robert Bosch Gmbh Method for operating a power supply unit for a motor vehicle electrical system
DE102013008737A1 (en) * 2013-05-23 2014-06-18 Audi Ag Circuit device has high-voltage direct-current (DC) circuit and low-voltage DC circuit that are connected to electrical loads, and three-phase arrangement that is formed for converting voltage between DC circuits
DE102014014838A1 (en) * 2014-10-07 2016-04-07 Audi Ag Redundant energy supply system for a vehicle electrical system of a motor vehicle
FR3039934B1 (en) * 2015-08-03 2018-12-07 Psa Automobiles Sa. Method for managing the power supply of a motor vehicle

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EP0682401B1 (en) * 1994-05-11 1998-05-27 Schaffner Elektronik Ag Limiting device for the output voltage slope of a self-commutated converter
DE60000294T2 (en) * 1999-03-11 2003-03-27 Toyota Motor Co Ltd System and device with multiple power sources, motor drive device and hybrid vehicle with this system
DE69625119T2 (en) * 1995-04-24 2003-05-08 Denso Corp Power plant
WO2003067737A1 (en) * 2002-02-08 2003-08-14 Seung-Ki Sul Method of automotive battery charging
US7023171B2 (en) * 2003-11-12 2006-04-04 Ut-Battelle Llc Integrated inverter for driving multiple electric machines
EP2062801A1 (en) * 2007-11-22 2009-05-27 Denso Corporation Power supply system with multiphase motor and multiphase inverter
DE19838296B4 (en) * 1998-08-24 2009-06-04 Robert Bosch Gmbh Electrical power supply system
CH698725B1 (en) * 2006-07-27 2009-10-15 Eth Zuerich Eth Transfer Device for three-phase drive system of hybrid motor vehicle, has star-point of stator phase of polyphase machine taken to input face first end of HF-isolated circuit part

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Publication number Priority date Publication date Assignee Title
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