WO2019053160A1 - Rechargement d'un accumulateur d'énergie électrique d'un véhicule automobile - Google Patents

Rechargement d'un accumulateur d'énergie électrique d'un véhicule automobile Download PDF

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Publication number
WO2019053160A1
WO2019053160A1 PCT/EP2018/074807 EP2018074807W WO2019053160A1 WO 2019053160 A1 WO2019053160 A1 WO 2019053160A1 EP 2018074807 W EP2018074807 W EP 2018074807W WO 2019053160 A1 WO2019053160 A1 WO 2019053160A1
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WO
WIPO (PCT)
Prior art keywords
electrical
voltage
charging station
charging
energy storage
Prior art date
Application number
PCT/EP2018/074807
Other languages
German (de)
English (en)
Inventor
Bernhard Sofaly
Thomas Paesler
Original Assignee
Conti Temic Microelectronic 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 filed Critical Conti Temic Microelectronic Gmbh
Publication of WO2019053160A1 publication Critical patent/WO2019053160A1/fr

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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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M7/219—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/24—Using the vehicle's propulsion converter for charging
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac 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
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H02M1/123—Suppression of common mode voltage or current
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • the invention relates to a method for charging an electrical energy storage device of a motor vehicle with electrical energy from a vehicle external charging station, wherein the charging station provides a single-phase electrical AC voltage with respect to a predetermined electrical reference potential, wherein the electrical energy storage by means of a clocked energy converter with the vehicle external charging station electrically is coupled, wherein the clocked energy converter, the electrical energy by means of at least two parallel-connected series circuits of two
  • the invention further relates to a charging ⁇ device for charging an electrical energy storage device of a motor vehicle with electrical energy from a vehicle external charging station, with a charging station connection for supplying a single-phase AC electrical power with respect to a predetermined electrical reference potential, an energy storage port for electrically coupling the
  • the invention also relates to a motor vehicle with an electrical system which has a DC voltage intermediate circuit and an electrical energy store connected to the DC voltage intermediate circuit, a charging connection for connecting to a vehicle-external charging station providing a single-phase electrical AC voltage and one to the charging connection and the electrical energy storage device coupled charging device for charging the electrical energy storage with electrical energy from the charging station.
  • a motor vehicle comprises an electrical vehicle electrical system in order to be able to supply electric devices which can be connected to the electrical vehicle electrical system as well as units of the electrical vehicle electrical system in a predeterminable manner.
  • the electrical system thus serves the electrical power distribution.
  • the electrical system includes a DC voltage intermediate circuit to which the electrical energy storage is connected.
  • the electrical energy storage is used to store excess energy in the electrical system, as well as to provide for a demand for electrical energy for the electrical system.
  • the electrical energy storage is often formed for this purpose by an accumulator or the like, which is able to chemically store electrical energy reversibly.
  • the electrical energy store may also include an electrical capacitor.
  • an electrically driven motor vehicle which comprises an electric drive device by means of which the motor vehicle can be driven in the intended driving operation.
  • a drive device comprises an inverter connected to the vehicle electrical system, in particular to an intermediate circuit of the electrical system, to which in turn a usually rotating electrical machine is connected, which is capable of providing the mechanical drive power.
  • a three-phase electrical machine is used, for example in the manner of a synchronous ⁇ machine, an induction machine and / or the like.
  • an electrically driven motor vehicle which may be, for example, an electric vehicle or hybrid vehicle, it is usually necessary to charge the electrical energy storage regularly so that it can provide electrical energy for the intended driving operation.
  • the motor vehicle has one with the electric
  • Energy storage electrically coupled charging device which is connected, for example, to the DC voltage intermediate circuit of the onboard ⁇ network in order to establish the electrical connection to the electrical energy storage can.
  • the charging device is connected to the charging port of the
  • the vehicle-external charging station is formed by a charging station, for example a charging station or the like.
  • the vehicle-external charging station can be either lei ⁇ tion bound or wireless, for example by means of an alternating magnetic field or the like, be coupled to the charging port of the motor vehicle to promote electrical energy from the charging station to the electrical energy storage can.
  • the charging device is usually a switched energy converter, for example in the manner of a rectifier, the gels ⁇ may be sionally also coupled to a DC / DC converter and / or the like.
  • the galvanic isolation is often formed by a transformer.
  • the vehicle-external charging station for the purpose of energy supply provides an electrical alternating voltage, which relates to a predetermined electrical reference potential is, for example, the ground potential, another suitable ground potential and / or the like. Since the electrical energy is usually taken from a public power supply network or is provided by this, the AC voltage usually has an AC voltage frequency, which corresponds to that of the public power distribution network ent ⁇ . In Europe and much of Asia, this is predominantly a frequency of about 50 Hz. In America, however, the frequency is usually 60 Hz.
  • a single-phase or three-phase a Wech ⁇ selledge is usually provided.
  • special requirements relating to electrical safety and electromagnetic compatibility to be ⁇ shall be respected.
  • a corresponding filter circuit is usually for example la- destations nurse and / or power the vehicle side, so that the diesbezüg ⁇ union prescribed requirements can be met.
  • a corresponding requirement is, for example, compliance with a maximum permissible leakage current.
  • the Ab ⁇ leitstrom is an electric current that flows in the normal operation of an electrical system in an undesirable current path. The current path is often by one
  • Protective conductor formed which is usually electrically connected to the electrical reference potential.
  • the electrical reference potential is often the ground potential.
  • the leakage current is essentially determined by the filter circuit, which serves to comply with the electromagnetic compatibility, in particular with regard to conducted radio interference.
  • Y-capacitors are often used in the filter circuit, which electrically couple a respective potential to be suppressed with the reference potential. This causes that when exposed to an AC voltage and a corresponding alternating current flows through the Y-capacitor, which at least partially determines the leakage current.
  • the leakage current can also be dependent on further, in particular capacitive, couplings.
  • the invention has for its object to improve the situation with respect to a leakage current when charging an electrical energy storage of a motor vehicle.
  • the invention proposes a method, a charging device and a motor vehicle according to the independent claims. Further advantageous embodiments will become apparent from the features of the dependent claims.
  • the switching elements are controlled at least as a function of an electrical reference voltage between one of at least two energy storage potentials of the electrical energy store and the electrical reference potential.
  • this has a control unit which is designed to switch the switching elements at least as a function of an electrical reference voltage between one of at least to control two energy storage potentials at the energy storage connection and the electrical reference potential.
  • the charging device is designed according to the invention.
  • the invention is based on the finding that by suitably controlling the cycled energy converter, in particular its switching elements arranged in a predetermined circuit structure, it is possible to already fundamentally reduce the generation of a leakage current.
  • the invention uses the idea that the AC voltage of the charging station is usually related to a reference potential, usually the ground potential.
  • the charging station, the Wech ⁇ selschreib usually of two electrical connections provided, wherein one of the electrical connections, a zero terminal and the second electrical connections is a phase terminal.
  • the zero terminal is electrically connected to the ground potential in the charging station itself or by a subsequent electrical infrastructure to which the charging station is connected to the ground potential as the reference potential. Since during charging, the charging station is electrically conductively connected to the charging terminal of the motor vehicle, these electric potentials are respectively in the motor vehicle before ⁇ hands.
  • Motor vehicle for example, a mass, electrically connected.
  • the electrical reference potential of the motor vehicle is formed by a motor vehicle mass, which is connected via a separately guided connection cable to the reference potential of the charging station.
  • dangerous electrical states can be reduced or avoided during the charging of the electrical energy store.
  • the invention makes use of the fact that the electrical energy store is usually connected with its energy storage connection to the DC voltage intermediate circuit and thus provides the intermediate circuit DC voltage with its at least two electrical energy storage potentials.
  • the energy storage connection therefore generally also includes the DC voltage intermediate circuit at the same time.
  • the DC intermediate circuit has for line-connected suppression of the energy storage potentials of the electrical energy storage device connected Y capacitors that electrically couple each of the at least two energy storage potentials that also correspond to the DC link potentials with the motor vehicle-side reference potential or the vehicle mass.
  • the Y capacitors have a comparatively large capacitance value.
  • a common capacity of such Y-capacitors is for example about lyF.
  • the invention is based on the further idea of reducing the fluctuation of the energy storage potentials with respect to the reference potential during charging of the electrical energy store by controlling the semiconductor switches. It can thereby be achieved that the leakage current can be correspondingly reduced on the motor vehicle side, in particular between the circuit circle side.
  • the effects of the invention can thus be achieved in particular when the electrical energy store is charged by a charging station which merely provides a single-phase AC voltage. For a three-phase AC voltage is already due to the underlying
  • Rectification principle of the leakage current motor vehicle side basically already much lower, so that the above problem with respect to the leakage does not occur here or can be already reduced by other simple cost-effective measures already in a suitable manner.
  • the inventive principle can also be used here to reduce the leakage current.
  • the effect according to the invention is particularly suitable for charging stations which provide a single-phase AC voltage.
  • the clocked power converter which is designed preferably in the manner of an inverter has at least two pa ⁇ rallel structuree series circuits each consisting of two switching elements.
  • the two series circuits are also connected to the electrical energy storage, for example, to the DC voltage intermediate circuit, if the elekt ⁇ hari technik energy storage also at Gleichwoods surge- circle is connected.
  • the electrical energy storage for the purpose of charging from the DC voltage intermediate circuit is disconnected and electrically coupled to the Ladeein ⁇ direction.
  • Each of the series circuits has a corresponding center terminal provided at a junction of the respective two switching elements of the respective series circuit.
  • Each of the two center terminals is electrically connected to one of the potentials provided by the charging station, between which is the AC voltage provided by the charging station for the purpose of charging.
  • the clocked energy converter further comprises an energy converter control which is connected to the switching elements and operates the switching elements in a clock mode in order to be able to provide the energy conversion in a desired manner.
  • an energy converter control which is connected to the switching elements and operates the switching elements in a clock mode in order to be able to provide the energy conversion in a desired manner.
  • switching patterns or clock patterns for the switching elements are provided, by means of which the desired energy conversion can be realized.
  • the switching elements of the energy converter are preferably semiconductor switching elements which may be formed, for example, by transistors such as bipolar transistors, field-effect transistors, in particular metal oxide semiconductor field effect transistor (MOSFET), isolated gate bipolar transistor (IGBT) or the like.
  • MOSFET metal oxide semiconductor field effect transistor
  • IGBT isolated gate bipolar transistor
  • the transistors are operated in a switching mode.
  • the switching operation of the semiconductor switching element means that in the on state during the switch-on between terminals of the semiconductor switching element between which the switching path is formed, a very low electrical resistance is provided so that a high current flow at very low residual voltage is possible. In the off
  • the switching path of the semiconductor switching element is high impedance, that is, it provides a high electrical resistance, so also At high, applied to the switching path electrical voltage substantially no or only a very small, especially negligible, current flow is present. This differs from a linear operation, which is usually not used in clocked energy converters.
  • the switching operation preferably provides only for the on ⁇ switching state and the off state.
  • the switching elements for reducing the leakage current can be controlled by means of the energy converter control, but it is also possible to be able to set the converted power in a predeterminable manner.
  • This makes it possible to operate the electrical energy storage in the most favorable operating condition for the purpose of charging.
  • an aging of the electrical energy store can be kept as low as possible and at the same time, if appropriate, a high efficiency with respect to the electrical charging can be achieved.
  • the switching elements are controlled at least as a function of the electrical reference voltage between one of at least two energy storage potentials of the electrical energy store and the electrical reference potential. Since the at least two energy storage potentials are coupled together in a predetermined manner by the electrical energy store, the reference voltage need only be taken into account with respect to one of the two energy storage potentials.
  • the electrical reference voltage is detected, for example by using a voltage sensor or the like.
  • the reference voltage also represents a measure of the electrical voltage with which the Y-capacitors, which comprises the electrical system of the motor vehicle and the electrical Energy storage are electrically coupled, are acted upon.
  • This reference voltage thus also represents a measure of which the leakage current is dependent.
  • the leakage current may also be frequency-dependent. Incidentally, this also explains why at a Be ⁇ zugsschreib, which is essentially only a DC voltage, the leakage current is correspondingly low.
  • a control in the manner of a control can be achieved, in which the electrical reference voltage detected by a suitable voltage sensor and a control unit of the control unit of the charging ⁇ device is supplied by means of the switching pattern for the switching elements adapted in a suitable manner or be provided so that the reference voltage has the smallest possible ripple, preferably is substantially constant.
  • the suitable switching patterns can be determined by means of simulation methods. With decreasing ripple of the reference voltage, the leakage current caused by the Y capacitors is reduced at the same time. With the invention, for example, depending on the reference voltage, a suitable switching pattern for respective switching elements can be selected.
  • a Y capacitor is a capacitor specially designed for the function of radio interference suppression, which must meet special technical requirements, in particular with respect to its dielectric strength, its current carrying capacity and / or the like.
  • These capacitors are electronic components which have to meet special requirements, in particular with regard to the radio interference suppression, as is the case for example with standards relating to electromagnetic compatibility, such as EN 61000, or also with regard to electrical safety.
  • Y capacitors are usually covered by standardization, for example according to IEC 60364. These are capacitors which are usually connected between the phase or the zero connection and the reference potential, for example a touchable, in particular protective earthed, part, whereby they can bridge a usually required due to electrical safety basic insulation. You must therefore meet very high, especially standardized, requirements.
  • Y capacitors are commonly used to suppress common mode noise.
  • this is a special constellation in which the reference potential, as it can be provided, for example, by the protective conductor, may be used for purposes other than protective earthing and thus protection against electric shock.
  • This differs from the X-capacitors also used for the purpose of radio interference suppression of conducted radio interference, which are commonly used to suppress push-pull interference.
  • increased protection requirements are imposed both on X capacitors and on Y capacitors.
  • the charging device is also proposed with the invention.
  • the charging device is preferably designed for arrangement on or in the motor vehicle. It is in particular designed to be connected to the DC voltage intermediate circuit of the electrical system of the motor vehicle, and in particular when the electrical energy storage is connected to this intermediate circuit and thus can be acted upon directly by the charging device with electrical charge.
  • the leakage current need not only be caused by the Y capacitors, but it can equally or additionally be effected by parasitic ka ⁇ pacitive couplings the reference potential with one or both of the energy storage potentials of the electrical energy storage or the DC link potentials of Gleichspan ⁇ voltage intermediate circuit. Parasitic capacities are often present due to design and can be avoided even with the most careful construction hardly or only insufficiently. In general, however, the leakage current is essentially determined by the Y capacitors, because in reality their electrical capacitance is usually significantly greater than the electrical capacitance of parasitic capacitances.
  • the charging device has the control unit, by means of which the switching elements can be controlled in a suitable manner.
  • the control unit comprises the energy converter ⁇ control.
  • the control unit represents a separate structural unit which is connected to the
  • the control unit is preferably an electronic circuit, which may be connected to a voltage sensor, in particular for detecting the reference voltage, or may even include this.
  • the control unit may also include a program-controlled computer unit, which may also be combined with the electronic circuit. By means of the computer program, the computer unit can provide the desired functionality.
  • the AC voltage is provided at a predetermined AC voltage frequency and only a spectral portion of the electrical reference voltage in a predetermined range of the AC voltage frequency is taken into account for controlling the switching elements.
  • the range of the AC voltage frequency includes, for example, a range that is determined by a maximum deviation from the AC voltage frequency by about 10%, preferably 5%, be ⁇ be provided.
  • the predetermined range corresponds exactly to the AC voltage frequency. This has the advantage that it is precisely the frequencies that are particularly unfavorably to be filtered that can be compensated for in the range of the AC voltage frequency.
  • the AC voltage frequency is, for example, 50 Hz or 60 Hz, depending on in which region and in which energy supply network the charging station is connected. In isolated networks, moreover, a frequency of 400 Hz may be provided, such as at
  • Ver ⁇ direction drive course is particularly suitable for control purposes for which the switching pattern for the switching elements are changed depending on the detected reference voltage.
  • the switching elements are controlled such that the electrical reference voltage is substantially constant.
  • This embodiment takes into account that only very small or negligible leakage currents are caused at a substantially constant reference voltage, in particular by the Y capacitors. This results from the functionality of capacitors.
  • Switching elements are controlled such that the electrical reference voltage corresponds to 40% to 60%, preferably 50%, an electrical energy storage voltage between the at least two energy storage potentials of the electrical energy storage. If the electrical energy store is connected directly to the DC voltage intermediate circuit, this voltage corresponds to the DC link voltage.
  • This embodiment has the advantage that a voltage load of the components relative to the electrical reference potential can be uniform. In addition, effects that result in, for example, differential mode noise can be reduced. It is further proposed that one of the electrical
  • AC potentials of the electrical AC voltage is electrically coupled to the electrical reference potential, wherein the center terminals of the two series circuits are coupled to the two provided by the charging station connections or electrical potentials.
  • a power-frequency component of the voltages for example at a frequency of approximately 50 Hz, which are set at the two center connections of the two series circuits with respect to the reference potential, essentially follows the power-frequency component of the two connected electrical potentials with respect to the reference potential.
  • the voltage drops across the line filter chokes can be taken into account when setting the voltages at the two center terminals of the two series circuits, which can lead to a nearly complete elimination of the mains frequency components of the leakage currents.
  • an advantageous control of the circuit breaker would be characterized in that the series circuit, the center port electrically coupled to the reference potential, about 40% to 60%, preferably about 50%, the energy storage voltage or optionally the DC link voltage, and the other series circuit performs the full stroke of the charging voltage, ie sinusoidally, for example, between 10% and 90% of the energy storage voltage with the Mains frequency oscillates.
  • the voltage drops across the line filter chokes can be superimposed on these two voltages.
  • the two series circuits of the clocked energy converter are preferably operated according to the invention so that it provides an AC voltage with a full amplitude at the AC frequency at one of the two center connections with respect to the DC link voltage available at the clocked power converter, whereas the other series circuit its central terminal provides an opposite phase partial voltage of the AC voltage at the AC frequency.
  • This can be achieved that the corresponding AC component of the reference ⁇ voltage is reduced, thereby consequently, the leakage current is reduced accordingly.
  • each of the at least two energy storage potentials of the electrical energy store is electrically coupled via a respective Y capacitor to the electrical reference potential.
  • the charging device can determine which is electrically coupled to the central terminals to the reference potential, it is further proposed that the switching elements each having an inverse diode, wherein the switching elements are turned off, and respective electrical Wegelem ⁇ relaxations are recorded and evaluated to determine which of the Central terminals is electrically coupled to the reference potential.
  • drive circuits provided for the switching elements generally comprise a switching state detection. The switching state detection is based on detecting a switching element voltage applied to the switching element. If the detected switching element voltage is smaller than a predetermined comparison value, this is output as a switched-on state. If, however, the detected switching element voltage greater than the comparison value, this will be as a power-down state ⁇ . This makes it possible to detect the respective switching state of the switching elements. Since a respective diode is connected in parallel to each switching element, thus also the
  • Switching state of the respective diode can be determined because the switching elements are themselves in the designed switching state.
  • the clocked energy converter works like a single-phase bridge rectifier.
  • the comparison value is preferably chosen at an electrical voltage of about 4V. However, it may also be chosen in a range from about 2.5 V to about 8 V, in deviation. In this case, this embodiment is based on the fact that a switching state of the switching element, in which the middle connection of the series connection is electrically coupled to the phase connection, corresponds to FIG.
  • connection situation of the charging station to the clocked energy converter can be used to be able to control the switching elements of the two series circuits in a suitable manner, as has already been explained in detail above.
  • the laser is destationsan gleich coupled to the switched energy converter galvanic ⁇ cally.
  • the invention makes it possible to dispense with galvanic isolation, as is conventional in the prior art.
  • the galvanic separation also serves, among other things, to prevent leakage currents.
  • a suitable transformer is usually provided, by means of which the electrical isolation can be achieved.
  • such a transformer is costly and also requires a large amount of space.
  • it is possible to avoid the galvanic separation and at the same time to meet the requirements, which may be at least partially justified by the standardization.
  • the motor vehicle has an electric drive device, which has a three-phase electrical machine for driving the motor vehicle and an output connected to the electric machine and the vehicle power supply inverter, which is formed, provide a three-phase AC power supply system for the electric machine foizu ⁇ , wherein the inverter is configured to provide the clocked power converter of the charging device.
  • this inverter generally also includes a switching element structure, as is required for the cycled energy converter, which is used to carry out the method according to the invention.
  • the clocked energy converter is electrically coupled via phase windings of the electric machine to the charge port. In this case, the electric machine is at least partially included in the conversion process. This makes it possible to operate the clocked energy converter as a boost converter or buck converter.
  • stator windings of the electric machine are connected to a star point in a proper driving operation, with the neutral point being resolved for the purpose of charging, so that respective winding connections released thereby can take over the function of the center connections of the cycled energy converter.
  • additional effects due to the inductances provided by the windings can be used advantageously for the method according to the invention.
  • the invention also includes developments of the method according to the invention, which have features as they have already been described in connection with the developments of the charging device according to the invention or the motor vehicle according to the invention and vice versa. For this reason, the corresponding developments are not described here again.
  • Embodiments of the invention are be ⁇ wrote. This shows:
  • Fig. 1 is a schematic diagram of an electrical wiring system of an electric vehicle as a force ⁇ vehicle with an electric drive device in a designated driving operation;
  • Fig. 2 is a schematic diagram view as in FIG. 1, but in which the electric vehicle for charging a
  • Fig. 3 is a schematic diagram of electrical voltages applied to AC terminals of an inverter of the drive means when charging in accordance with Fig. 2;
  • Fig. 4 in a schematic diagram representation
  • FIG. 5 is a schematic diagram of electrical see voltages as Figure 3, abut the input terminals of the inverter when connecting to a charging station, which provides a single-phase AC voltage ⁇ ;
  • Fig. 6 is a schematic diagram representation as shown in FIG. 4 of
  • FIG. 7 shows a schematic circuit diagram representation like FIG. 2, in which the vehicle electrical system for charging the energy store is connected to a charging station, which provides a single-phase AC voltage;
  • FIG. 8 shows a schematic view like FIG. 5 for the circuit according to FIG. 7;
  • FIG. 8 shows a schematic view like FIG. 5 for the circuit according to FIG. 7;
  • Fig. 9 is a schematic representation as shown in FIG. 6 for the
  • Fig. 10 is a schematic diagram of Fig. 7, wherein the switching elements of the inverter are controlled in accordance with a switching pattern of the invention, as illustrated with reference to Fig. 9;
  • FIG. 11 is a schematic equivalent circuit diagram for a simulation of the operation of the circuit of FIG. 7;
  • FIG. 12 shows a schematic diagram of the conditions during operation of the circuit according to FIG. 7;
  • Fig. 13 is a schematic equivalent circuit diagram of the
  • FIG. 14 is a view like FIG. 12 for the equivalent circuit diagram of FIG. 13;
  • FIG. FIG. 15 is a schematic equivalent circuit diagram for further improved common-mode rejection;
  • FIG. 14 is a view like FIG. 12 for the equivalent circuit diagram of FIG. 13;
  • FIG. 15 is a schematic equivalent circuit diagram for further improved common-mode rejection;
  • FIG. 14 is a view like FIG. 12 for the equivalent circuit diagram of FIG. 13;
  • FIG. 15 is a schematic equivalent circuit diagram for further improved common-mode rejection;
  • FIG. 16 shows an illustration as in FIG. 14 for the equivalent switching image representation according to FIG. 15;
  • FIG. 18 is a schematic diagram of a simulation of the circuit of FIG. 17 to determine which of the inverter terminals is connected to the neutral connection of the charging station is electrically coupled;
  • FIG. 19 is an illustration like FIG. 18, in which the recognition is further clarified.
  • Fig. 1 shows a schematic diagram representation of a DC intermediate circuit 54 of an electrical system of an electric vehicle not further illustrated as an electrically driven motor vehicle, in which an electrical An ⁇ drive device 56 is connected.
  • the electric drive device 56 comprises a three-phase electrical machine 58, which in the present case is designed as a synchronous machine and which serves to drive the electric vehicle.
  • an inverter 60 is closed at ⁇ formed to provide a three-phase alternating voltage network ⁇ for the electric machine 58th
  • the inverter 60 comprises a control unit 52, by means of the inverter 60 is controlled with respect to the alternating-voltage network in a suitable manner, so that the electrical machine 58 to provide the desired drive function during the determination ⁇ proper driving operation of the electric vehicle can.
  • the inverter has three inverter connections, which are explained in more detail below, to which non-designated stator windings of the electrical machine 58 are connected.
  • the stator windings of the electric machine 58 are connected while driving at a common star point 62.
  • the inverter 60 is further connected to the DC voltage intermediate circuit 54.
  • the high-voltage battery 10 ⁇ at the DC voltage intermediate circuit 54 is also a high ⁇ voltbatterie 10 is connected as an electrical energy storage, which provides electrical energy for the intended driving operation of the electric vehicle.
  • the high-voltage battery 10 ⁇ at the same time also provides the intermediate circuit direct voltage of the DC voltage intermediate circuit 54th
  • Y capacitors 42, 44 coupled to a reference potential, which is presently formed by a mass 40 of the electric vehicle.
  • the Y capacitors 42, 44 cooperate in this regard with a current-compensated inductor 64.
  • the electrical capacitance of each of the two Y capacitors 42, 44 is about 1 i iF.
  • the electric capacity of the Ka ⁇ Y-capacitors 42, 44 may be needed, even thereof chosen differently.
  • a respective electrical voltage of the potentials of the high-voltage battery 10 with respect to the mass 40 is shown. It can be seen from the two schematic diagrams that a reference voltage 38, which is formed between a positive electrical potential of the high-voltage battery 10 and the ground 40, corresponds to approximately half of the DC link voltage. Accordingly, an electrical voltage results between the negative electrical potential of the high-voltage battery 10 and the mass 40.
  • a reference voltage 38 which is formed between a positive electrical potential of the high-voltage battery 10 and the ground 40
  • an electrical voltage results between the negative electrical potential of the high-voltage battery 10 and the mass 40.
  • FIG. 1 In two in a right portion adjacent to the circuit diagram shown charts electrical potentials of a star ⁇ point 62 with respect to the negative potential of the high-voltage battery 10 are shown.
  • the star point 62 is formed by respective winding terminals of windings of the electric machine 58.
  • the left of the two diagrams shows an electrical voltage between the two potentials with a resolution in the range of
  • the inverter 60 has in this case three series circuits 22, 24, 26 of two semiconductor switches 28, 30, in the present case are formed by Isolated Gate Bipolar Transitors (IGBT).
  • IGBT Isolated Gate Bipolar Transitors
  • the series circuits 22, 24, 26 are paral ⁇ lel matter and subsequently closed to the DC voltage intermediate circuit 54th
  • Each of the three series circuits 22, 24, 26 has a respective center terminal 32, 34, 36, which provide the inverter terminals to which the Stän ⁇ derwicklungen the electrical machine 58 are connected.
  • the inverter 60 is thus designed in the manner of a B6 inverter bridge and provides the three-phase alternating voltage network for driving.
  • Fig. 2 shows in a schematic diagram representation based on Fig. 1, as the electrical system for charging the
  • High-voltage battery 10 is connected to a vehicle external charging station 12, which provides electrical energy for charging the high-voltage battery 10.
  • the charging station 12 is a stationary charging station and the electric vehicle is used for close to the charging station 12 in the area of the charging station 12 parked.
  • a not further shown wired ⁇ bound connection in this case a connection cable, the electrical system, as will be explained further below, connected to the charging station 12.
  • the charging station 12 provides a three-phase AC voltage with a nominal voltage of about 230 V per phase at an AC voltage frequency of about 50 Hz.
  • the three phases are inserted ver ⁇ respectively to each other by 120 °.
  • a galvanic connection between the charging station 12 and the electrical system of the electric vehicle is provided. Accordingly, a protective conductor connection or a reference potential 16, here ground, the loading station 12 to the ground 40 of the Elect ⁇ ro Vietnameses is electrically coupled.
  • the loading station 12 also comprises a customized for three-phase alternating voltage network trained filter is carried out by means of which a filtering of the terminals of the charging station 12, so that the prescribed limits for reactions un ⁇ be undershot.
  • Star point 62 of the electric machine 58 is opened and the corresponding terminals of the stator windings of the electric machine 58 are connected to the respective phase terminals of the La ⁇ tion 12. As a result, a charging station connection 48 of the electric vehicle is provided.
  • the stator windings of the electric machine 58 and the inverter 60 can then be used to supply electrical energy to the high-voltage battery 10.
  • the IGBTs 28, 30 of the inverter 60 are suitably controlled by the control unit 52 of the inverter 60.
  • the inverter 60 thus provides a clocked energy converter, which makes use of the inductance of the stator windings the electric machine 58 realized an energy conversion in a suitable manner.
  • the high-voltage battery 10 can be supplied with electrical energy from the charging station 12.
  • the respective reference voltage 38 is again shown in two schematic diagrams in a left-hand area in FIG. 2. It can be seen that the Be ⁇ zugsschreib 38 is substantially equal, as they correspond also in the embodiment shown in Fig.
  • FIG. 1 operating situation. Only slight fluctuations occur when charging by means of a three-phase alternating voltage. Accordingly, the conditions at the central connections 32, 34, 36 set in such a way as they are already shown for Fig. 1. This is illustrated by two superimposed diagrams in a central region in the circuit diagram of FIG. 2. In the right-hand area of FIG. 2, the three phases of the AC voltage provided by the charging station 12 are shown.
  • a charging station provided on the net filter or filter circuit 120 can be prevented that the reference potential 16 jumps neither with respect to the DC link side nor with respect to the charging station side AC voltage side.
  • the filter circuit 120 of the charging station 12 is designed adapted for these disturbances.
  • FIG. 4 shows a schematic diagram of the time profile of a PWM pattern of the series circuit 24 of the inverter 60 with a graph 66 and the associated integrated AC voltage with a graph 68.
  • FIG. 3 shows the three corresponding AC voltages at the three input terminals of the inverter 60 with three graphs 70, 72 and 74.
  • the abscissa is respectively a time axis in which the time is given in milliseconds.
  • the ordinate is a voltage axis indicating the voltage in volts.
  • FIG. 7 shows a schematic diagram of a diagram as in FIG. 2, but here the vehicle electrical system of the electric vehicle is connected to a charging station 14, which provides a single-phase AC voltage 18.
  • the clocked energy converter 20 has an energy storage connection 50, with which it is connected to the DC voltage intermediate circuit 54 and thus also to the high-voltage battery 10.
  • the clocked energy converter 20 forms a charging device 46, which is designed to be connected to the charging station 14.
  • the center terminals 32 and 34 of the series circuits 22, 24 are respectively electrically connected to a phase terminal L and a neutral terminal N of the charging station 14.
  • an alternating voltage of 230 V at 50 Hz is provided at the phase connection L in relation to the zero connection N.
  • the La ⁇ destation 14 further also has a filter circuit 120th
  • FIG. 2 In the left area - as well as in Fig. 2 - also two schematic diagrams are shown one above the other.
  • the two superposed diagrams respectively represent the reference voltage 38 with respect to the positive potential of the high-voltage battery 10 with respect to the ground 40 and the negative potential with respect to the ground 40.
  • the ground 40 is electrically coupled to the reference potential 16.
  • FIGS. 5 and 6 further clarify the functionality in single-phase charging operation in this operating mode.
  • Fig. 5 corresponds to the illustration, as has already been explained to Fig. 3.
  • Graphs 78 and 80 show the respective voltages at the input terminals of the inverter 60 which are integrated at the center terminals 32, 34 which provide the respective input terminals.
  • the illustration in FIG. 5 essentially shows the AC frequency component without further spectra, which may be supplemental, inter alia, by the PWM operation.
  • Fig. 6 shows, in a protracted representation corresponding PWM signals with graphs 82, 84, wherein the voltage profile illustrated with the graph 78, the PWM signal is too ⁇ sorted, which is illustrated with the graph 84 and the graph 80 shown Voltage curve that
  • Common mode filter of the filter circuit 120 is unable to adequately filter the relatively low AC frequency frequency of about 50 Hz, the phase terminal L and the neutral terminal N are connected directly to the inverter terminals.
  • the AC frequency related common mode component of the inverter outputs follows the AC frequency common mode component on the charging station side. Since there is no common mode component of the inverter terminals with respect to the negative potential of the high voltage battery 10, the common mode voltage on the DC link side follows
  • FIG. 10 now shows a schematic circuit diagram as in FIG. 7, wherein, however, the schematic diagrams additionally shown in FIG. 10 illustrate the leakage current resulting from the different control according to the invention as well as common-mode potentials.
  • the circuit structure therefore corresponds to that which has already been explained with reference to FIG. 7, for which reason reference is additionally made to the relevant explanations.
  • the idea of the invention is to use a PWM pattern for single-phase charging of the high voltage battery 10, because it said before ⁇ problems in single-phase charging can be solved.
  • FIGS. 8 and 9 show diagrams corresponding to FIGS. 5 and 6, which likewise illustrate voltage profiles, as already explained with reference to FIGS. 5 and 6.
  • FIG. 9 shows a time-magnified resolution, wherein graphs 86 and 88 are also shown.
  • PWM signals with graphs 90, 92 are shown.
  • the PWM signal according to the graph 90 is assigned to the voltage profile according to the graph 86
  • the PWM signal according to the graph 92 is assigned to the voltage profile according to the graph 88.
  • the reference voltage 38 in contrast to FIG. 7, is essentially a DC voltage. Accordingly, the negative potential of the high ⁇ voltbatterie 10 relative to the ground 40 is a DC voltage. As a result, the Y capacitors 42, 44 are now essentially each subjected to a constant voltage, so that the leakage current is considerably reduced by these capacitors.
  • Suppress clock frequency of the inverter 60 in addition to, however, this frequency compared to the AC voltage frequency is considerably higher, for example, 10 kHz, which is why this high frequency can be filtered in a suitable manner with relatively little filter effort.
  • FIG. 11 shows a schematic equivalent circuit diagram for a simulation of a symmetrical full bridge with a common mode current or leakage current to the reference potential 16 with a frequency of approximately 50 Hz in the case of a symmetrical full bridge operation with a suitable PWM pattern.
  • 12 shows a schematic voltage or current-time diagram in which graphs 94 and 96 show AC voltages at the inverter terminals of the inverter 60, with only the spectral component in the range of 50 Hz with respect to the negative potential of the high-voltage battery 10 is shown.
  • a graph 98 shows the leakage current to the reference potential 16, which is detected by the Y capacitors 42, 44 and optionally further Y capacitors of the line filter.
  • the electrical capacitance of the Y capacitors of a respective phase of the network filter or the filter circuit 120 is generally about 22 nF.
  • FIG. 13 shows a schematic equivalent circuit diagram like Fig. 11, in which now the clocked energy converter 20 is operated according to the invention.
  • FIG. 14 shows a representation like FIG. 12, in which graphs 100 and 102 show the corresponding AC voltages at the center terminals 32, 34 of the clocked energy converter 20 for a spectral range around the AC frequency of 50 Hz.
  • a graph 104 shows the corresponding leakage current. Compared to the illustration according to FIGS. 11 and 12, it can be seen that the leakage current can be almost completely reduced by the control principle of the invention.
  • Fig. 15 shows a further schematic Optimizschaltsentdar ⁇ position based on the equivalent circuit representations of the FIGS. 11 and 13, wherein caused to further reduce the leakage current, an expected voltage drop across filter inductances of the line filter or the filter circuit 120 of the La ⁇ destation 14 in the direction of the zero terminal N is added by the leakage current or the charging current to the voltage at the corresponding inverter terminal.
  • FIG. 16 shows the corresponding effects in a diagram as in FIGS. 12 and 14.
  • graphs 106 and 108 again represent the corresponding AC voltages at the center terminals 32, 34 of the clocked energy converter 20. With a graph 110, however, again the leakage current is shown. It is also apparent here that the leakage current is considerably reduced compared to the simulation according to FIGS. 11 and 12.
  • inverter 60 is configured to include a portion of the clocked power converter 20 of the charging device 46 to provide.
  • the clocked energy converter 20 thus comprises in this case the series circuits 22, 24 of the alternating ⁇ richters 60 whose central terminals 32, 34 are connected to the corresponding terminals of the charging station 14, namely the phase connection L and the neutral terminal N.
  • the control unit 52 is used, which thus also comprises a power converter control, which is designed for the inventive process control.
  • FIG. 17 schematically shows an equivalent circuit diagram in which only inverse diodes D 1, D 2, D 3, D 4 connected in parallel are illustrated with the IGBTs 28, 30.
  • This substitute circuit diagram is intended to explain how the charging device 46 is enabled to determine which of the connections of the clocked energy converter 20, namely which of the central connections 32, 34, is electrically coupled to the phase connection L and which of the central connections 32, 34 to the neutral connection N. is. This is useful for the control of the clocked energy converter in the sense of the method according to the invention.
  • a state information of the inverter 60 or of the clocked energy converter 20 provided by the inverter 60 can be used, which by means of corresponding not shown driver units corresponding to the corresponding IGBTs 28, 30 be controlled, can be determined. From the information obtained in this way, it can be determined which of the central connections 32, 34 is electrically connected to the phase connection L and which is electrically connected to the zero connection N.
  • Fig. 18 shows a corresponding timing diagram as shown in FIGS. 12, 14, 16, with which the above-mentioned measurement method is to be ⁇ interpreting further light ver. Because the DC link side of the AC The inverter 60 and the clocked energy converter 20 via the Y capacitors 42, 44 connected to the ground 40 and consequently to the reference potential 16, the voltage across the IGBT's 28, 30, in Fig. 17 only by their respective diodes Dl, D2, D3, D4 are shown, very different for connection to the phase terminal L and the neutral terminal. This is with Fig. 18 clarifies. For this purpose, this embodiment uses a function of the corresponding driver units, which provide a status signal, depending on a switching state of the respective IGBT 28, 30th
  • the state signal is dependent on an electrical voltage measured at a switching path of the respective IGBT 28, 30. If this voltage is less than approximately 4 V, which corresponds to a predetermined reference voltage, this is signaled as a switched-on state with a suitable signal. Accordingly, a detected voltage greater than about 4 V is reported as being off with an appropriate signal.
  • this embodiment makes use of the fact that the respective switched-off state of the respective IGBT 28, 30, which is electrically coupled to the phase connection L, jumps back and forth, whereas a corresponding state of the IGBTs 28, 30, the are electrically coupled to the neutral terminal N, constantly indicate the turned off state.
  • the rectified DC voltage is coupled to the reference potential 16. Without the Y-capacitors 42, 44 of the DC intermediate circuit 54, the rectified voltage would rise only to the maximum peak voltage of the supplied AC voltage. Because the Y-capacitors 42, 44 act on the DC link side like bootstrap capacitors when the AC side is not symmetrical with respect to the
  • the DC voltage increases to about twice the peak voltage of the AC voltage when the Phase terminal L or the neutral terminal N are coupled to the dustspo ⁇ potential 16.
  • Fig. 18 illustrates this.
  • a graph 114 in FIG. 18 shows the corresponding voltage of the IGBTs 28, 30 which are coupled to the phase connection L.
  • the graph 112 shows the situation for the IGBTs 28, 30 connected to the neutral terminal N.
  • a graph 116 represents the reference potential 16. From FIG. 18 it can be seen that it can be easily determined that the diodes D 1 and D 3 are coupled to the phase connection L. Accordingly, their IGBTs 28, 30 are electrically coupled to the phase terminal L. This can be used 30 to control the IGBT's 28, in order to realize the invention Ver ⁇ direction drive.
  • FIG. 19 shows, in a schematic representation like FIG. 18, detection areas 118 that can be used to be able to determine the assignment of the connections provided by the charging station 14 to the reference potential 16.
  • the exemplary examples show how the inventive process it ⁇ leakage particularly when charging an electrical energy accumulator of a motor vehicle ⁇ with a single-phase AC voltage of a laser can be destation reduced.
  • the embodiments are merely illustrative of the invention and are not intended to limit this.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un procédé servant à recharger un accumulateur d'énergie (10) électrique d'un véhicule automobile en énergie électrique provenant d'une station de recharge (14) externe au véhicule, dans lequel la station de recharge (14) fournit une tension alternative (18) électrique monophasée par rapport à un potentiel de référence (16) électrique prédéfini. L'accumulateur d'énergie (10) électrique est couplé de manière électrique à la station de recharge (14) externe au véhicule au moyen d'un convertisseur d'énergie (20) cadencé. Le convertisseur d'énergie cadencé convertit l'énergie électrique au moyen d'au moins deux circuits en série (22, 24) branchés en parallèle composés respectivement de deux éléments de commutation (28, 30), des bornes centrales (32, 34) des circuits en série (22, 24) étant à cet effet respectivement couplées électriquement à la station de recharge (14). L'invention prévoit que les éléments de commutation (28, 30) sont commandés au moins en fonction d'une tension de référence (38) électrique entre un des au moins deux potentiels d'accumulateur d'énergie de l'accumulateur d'énergie (10) électrique et le potentiel de référence (16) électrique.
PCT/EP2018/074807 2017-09-18 2018-09-13 Rechargement d'un accumulateur d'énergie électrique d'un véhicule automobile WO2019053160A1 (fr)

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DE102017216468.9A DE102017216468A1 (de) 2017-09-18 2017-09-18 Aufladen eines elektrischen Energiespeichers eines Kraftfahrzeugs

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DE102018114589B4 (de) * 2018-06-18 2022-07-07 Infineon Technologies Austria Ag Leistungswandlerschaltung und leistungswandlungsverfahren
DE102022203204A1 (de) 2022-03-31 2023-10-05 Vitesco Technologies GmbH Interne Ableitstromkompensation durch einen Stromrichter einer Fahrzeugladeschaltung
DE102022211478A1 (de) 2022-10-28 2024-05-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Schaltung und Verfahren zum Betreiben derselben

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JP2002218656A (ja) * 2001-01-23 2002-08-02 Sharp Corp 系統連系インバータ装置
EP2709255A1 (fr) * 2011-05-13 2014-03-19 Toyota Jidosha Kabushiki Kaisha Système de source de courant de véhicule
US20140306563A1 (en) * 2011-11-28 2014-10-16 Hitachi Automotive Systems, Ltd. Mechanical-Electrical Integrated Electric Drive System
EP2874303A1 (fr) * 2013-11-15 2015-05-20 Mitsubishi Electric R & D Centre Europe B.V. Onduleur DC-AC
US9696743B1 (en) * 2014-08-27 2017-07-04 Motiv Power Systems, Inc. Generating leakage canceling current in electric vehicle charging systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002218656A (ja) * 2001-01-23 2002-08-02 Sharp Corp 系統連系インバータ装置
EP2709255A1 (fr) * 2011-05-13 2014-03-19 Toyota Jidosha Kabushiki Kaisha Système de source de courant de véhicule
US20140306563A1 (en) * 2011-11-28 2014-10-16 Hitachi Automotive Systems, Ltd. Mechanical-Electrical Integrated Electric Drive System
EP2874303A1 (fr) * 2013-11-15 2015-05-20 Mitsubishi Electric R & D Centre Europe B.V. Onduleur DC-AC
US9696743B1 (en) * 2014-08-27 2017-07-04 Motiv Power Systems, Inc. Generating leakage canceling current in electric vehicle charging systems

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