DE102013008737A1 - 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 - Google Patents

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

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Publication number
DE102013008737A1
DE102013008737A1 DE201310008737 DE102013008737A DE102013008737A1 DE 102013008737 A1 DE102013008737 A1 DE 102013008737A1 DE 201310008737 DE201310008737 DE 201310008737 DE 102013008737 A DE102013008737 A DE 102013008737A DE 102013008737 A1 DE102013008737 A1 DE 102013008737A1
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Germany
Prior art keywords
circuit
voltage dc
dc circuit
high
voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
DE201310008737
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German (de)
Inventor
Wolf Goetze
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.)
Audi AG
Original Assignee
Audi AG
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Filing date
Publication date
Application filed by Audi AG filed Critical Audi AG
Priority to DE201310008737 priority Critical patent/DE102013008737A1/en
Publication of DE102013008737A1 publication Critical patent/DE102013008737A1/en
Application status is Ceased legal-status Critical

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/02Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/20Conversion of dc power input into dc power output without intermediate conversion into ac by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters

Abstract

The invention relates to a circuit arrangement (1) comprising a high voltage direct current circuit (2) and a low voltage direct current circuit (3) which are electrically connected to one another via at least one three - phase arrangement (8) consisting of an inverter (9) and a three - phase machine (10) the outer conductors (18, 19, 20) of the three-phase machine (10) are connected to the high-voltage direct current circuit (2) via the inverter (9) and the neutral conductor (26) of the three-phase machine (10) is connected to the low-voltage direct current circuit (3). It is provided that the high-voltage DC circuit (2) and / or the low-voltage DC circuit (3) is associated with at least one electrical load (4, 5) and the three-phase arrangement (8, 15) for voltage conversion between the high-voltage DC circuit (2) and the low-voltage DC circuit (3 ) is trained. The invention further relates to a method for operating a circuit arrangement (1).

Description

  • The invention relates to a circuit arrangement with a high-voltage DC circuit and a low-voltage DC circuit, which are electrically connected to each other via at least one three-phase arrangement consisting of an inverter and a three-phase machine, wherein the outer conductors of the three-phase machine are connected via the inverter to the high voltage DC circuit and the neutral conductor of the three-phase machine the low voltage DC circuit is connected. The invention further relates to a method for operating a circuit arrangement.
  • The circuit arrangement has a plurality of DC circuits, namely the high-voltage DC circuit and the low-voltage DC circuit. These differ with regard to the (DC) voltage present in them. Thus, the voltage of the high-voltage DC circuit is higher than that of the low-voltage DC circuit. The two circuits are electrically connected to each other via the three-phase arrangement. The three-phase arrangement consists at least of the inverter and the three-phase machine. Among other things, the inverter serves to provide an alternating current or a three-phase current for operating the three-phase machine; in particular the provision of a suitable rotating field. In a known manner, the outer conductors of the three-phase machine are connected via the inverter to one of the DC circuits, in this case the high-voltage DC circuit. In addition, however, it is now provided that the neutral conductor is connected to one of the DC circuits, in this case the low-voltage DC circuit. From the state of the art this is for example the publication US 8,013,553 B2 known.
  • In particular, in the automotive field, it is often desirable to be able to provide different voltage levels, which are fed from the same power source or the same energy storage. For this purpose, for example, a voltage converter is used, which must be provided in addition to the inverter. However, this requires an increased circuit complexity and also the provision of a separate control device for the voltage converter.
  • It is therefore an object of the invention to propose a circuit arrangement which can provide different voltage levels with little circuitry and control engineering effort.
  • This is achieved according to the invention with a circuit arrangement having the features of claim 1. It is envisaged that the high-voltage DC circuit and / or the low-voltage DC circuit is associated with at least one electrical load and the three-phase arrangement for voltage conversion between the high-voltage DC circuit and the low-voltage DC circuit is formed. Thus, it is not merely intended to provide an intermediate circuit in which there is a higher voltage. Rather, the low-voltage DC circuit, the high-voltage DC circuit or even both are led out of the three-phase arrangement to connect at least one additional consumer or in each case at least one additional consumer to this. Particularly preferably, therefore, at least one electrical load is assigned to the high-voltage DC circuit and the low-voltage DC circuit. Preferably, the voltage of the high-voltage direct current circuit is therefore not merely an internal auxiliary voltage, but serves to operate or supply the at least one consumer. For example, the high voltage DC circuit operates at 48V and the low voltage DC circuit at 12V.
  • By the special wiring of the DC circuits and the three-phase arrangement with each other, wherein the outer conductors of the three-phase machine are connected via the inverter to the high voltage DC circuit and the neutral of the three-phase machine to the low voltage DC circuit, it is possible to use the three-phase arrangement or the inverter for voltage conversion between the DC circuits. In particular, it may be provided to operate in a first mode, the three-phase machine using the inverter without this also serves as a voltage converter. In this case, the voltages of the outer conductors should sum up to zero at the neutral conductor. In a second mode, however, only the voltage conversion between the DC circuits, but not the operation of the three-phase machine is provided. In this case, the inverter is controlled in such a way that no rotation field causing rotation of the three-phase machine is generated, but rather that the same voltage is applied to all external conductors at the same time.
  • In a third mode, both the operation of the three-phase machine and the voltage conversion between the DC circuits is provided. Thus, on the one hand, the inverter is operated in such a way that the rotating field directed to the operation of the three-phase machine is produced. On the other hand, however, the operation is adjusted such that the voltages applied to the outer conductor to generate the rotating field, a further voltage is superimposed so that the voltages of the outer conductor to the neutral not sum to zero, but rather that the desired voltage of the low voltage DC circuit is present , Thus, therefore, three different modes of operation can be realized via the one inverter of the three-phase arrangement and a control unit associated therewith, which are not directed solely to the operation of the three-phase machine.
  • A further embodiment of the invention provides that the inverter for each outer conductor of the three-phase machine has a high-side switch and a low-side switch, wherein the outer conductor via the high-side switch to a first pole of the high-voltage DC circuit and via the Low-side switch is connected to a second pole of the high-voltage DC circuit. The first pole of the high-voltage direct current circuit is, for example, the positive pole, while the second pole is the negative pole. The three-phase machine is multi-phase, in particular three-phase, formed, with an outer conductor is present for each phase. In the case of the three-phase configuration, there are therefore three outer conductors and insofar three high-side switches and three low-side switches.
  • A development of the invention provides that a first pole of the low-voltage DC circuit is connected to the neutral conductor. A corresponding voltage is supplied to the low-voltage DC circuit via the neutral conductor. In that regard, the first pole of the low-voltage DC circuit corresponds for example to a positive pole.
  • A particularly preferred embodiment of the invention provides that a second pole of the low-voltage direct current circuit corresponds to the second pole of the high-voltage direct current circuit. This represents a first embodiment of the circuit arrangement presented here. Both voltage levels or both DC circuits are so far set to a common ground potential. The voltage applied to the outer conductors phase voltages are limited in this case, for example, to the voltage of the low-voltage DC circuit.
  • A further embodiment of the invention provides that the first pole of the low-voltage DC circuit is connected to the first pole of the high-voltage DC circuit via a capacitor. By such a circuit, a certain smoothing of the voltage in the two DC circuits is achieved.
  • A preferred embodiment of the invention provides that a further three-phase arrangement is provided and the second pole of the low-voltage DC circuit is connected to the neutral conductor of a three-phase machine of the further three-phase arrangement. This represents a second embodiment of the circuit arrangement presented here. In this case, therefore, the two DC circuits are not fixed to a common ground potential, but have different reference ground. Such an embodiment is particularly advantageous when the voltage of the high-voltage DC circuit is greater than three times the voltage of the low-current DC circuit, because in such a circuit, the phase voltages applied to the outer conductors is limited to half the difference between the two voltages. Under the condition mentioned, the phase voltages can thus be higher than in the first embodiment. In addition to the three-phase arrangement, there is now a further three-phase arrangement, which is connected in much the same way as the first three-phase arrangement. Thus, the outer conductor of the three-phase machine of the other three-phase arrangement via the inverter of the other three-phase arrangement are also connected to the high-voltage DC circuit. In contrast, the neutral conductor of the three-phase machine of the additional three-phase arrangement forms the second pole of the low-voltage direct current circuit.
  • A preferred embodiment of the invention provides that the first pole and / or the second pole of the low-voltage DC circuit are connected to the first pole and the second pole of the high-voltage DC circuit in each case via a capacitor. This is the case in particular for the second embodiment. Either the first pole, the second pole or both poles of the low-voltage DC circuit are respectively connected to the first pole and the second pole of the high-voltage DC circuit, for which purpose a capacitor is provided in each case. Particularly preferred is of course a symmetrical configuration, in which four capacitors are provided, via which the first pole of the low voltage DC circuit with both poles of the high voltage DC circuit and also the second pole of the low voltage DC circuit are electrically connected to both poles of the high voltage DC circuit. This wiring also serves to somewhat smooth the voltages present in the DC circuits.
  • A development of the invention provides that the electrical load is designed as an inductive and / or ohmic consumer. In addition to the electrical load can of course a power storage, such as a Battery and / or a capacitor may be provided. This power storage is preferably connected in parallel to the electrical load.
  • Finally, it can be provided that the low-voltage DC circuit and / or the high-voltage DC circuit is assigned an energy storage. For example, it is advantageous if each of the DC circuits has its own battery or a very high capacity capacitor (SuperCap) to avoid DC voltage fluctuations.
  • The invention further relates to a method for operating a circuit arrangement, in particular according to the preceding embodiments, wherein the circuit arrangement comprises a high-voltage DC circuit and a DC low-voltage circuit, which are electrically connected to each other via at least one three-phase arrangement consisting of an inverter and a three-phase machine, wherein the outer conductor of the Three-phase machine are connected via the inverter to the high-voltage DC circuit and the neutral of the three-phase machine is connected to the low-voltage DC circuit. It is provided that the high-voltage DC circuit and / or the low-voltage DC circuit is associated with at least one electrical load and the three-phase arrangement for voltage conversion between the high-voltage DC circuit and the low-voltage DC circuit is controlled. The advantages of such a circuit arrangement or such an approach has already been discussed. The circuit arrangement and the corresponding method can be developed further in accordance with the above explanations, so that reference is made to this extent.
  • It is particularly advantageous if the method is designed such that it enables the operation of the three-phase machine and the voltage conversion between the two DC circuits both simultaneously and separately from each other. Thus, in the first operating mode already mentioned above, it can thus be provided to operate only the three-phase machine without simultaneously controlling the inverter for voltage conversion between the two DC circuits. In the second mode, however, only the voltage conversion, but not the operation of the three-phase machine is provided. Finally, in the third operating mode, the inverter is controlled in such a way that both the three-phase machine is operated and the voltage between the two DC circuits is converted.
  • Of course, it can be provided that the current in the circuit arrangement is taken from at least one power storage. Preferably, only one of the DC circuits, so either the high-voltage DC circuit or the low-voltage DC circuit, such a power storage or a power source, in particular a generator or an alternator assigned. At the other DC circuit in this case, the at least one consumer is connected. For example, the power storage or the power source is associated with the low-voltage DC circuit, while the consumer is connected to the high-voltage DC circuit. The consumer is for example an ohmic consumer, but can also be designed differently. Additionally or alternatively, of course, the power can be generated by means of the three-phase machine, for which purpose it is operated as a generator. In this case, the at least one three-phase arrangement provides both a first voltage for the low-voltage DC circuit and a second, higher voltage for the high-voltage DC circuit. Of course, these embodiments can also be applied to the circuit arrangement described above.
  • The invention will be explained in more detail with reference to the embodiments illustrated in the drawings, without any limitation of the invention. Showing:
  • 1 A first variant of a first embodiment of a circuit arrangement,
  • 2 a second variant of the 1 known first embodiment of the circuit arrangement,
  • 3 a second embodiment of the circuit arrangement,
  • 4 a detailed view of the circuit arrangement according to the first embodiment, and
  • 5 a detailed view of the second embodiment of the circuit arrangement.
  • The 1 shows a first variant of a first embodiment of a circuit arrangement 1 with a high voltage DC circuit 2 and a low voltage DC circuit 3 , At the high voltage DC circuit 2 In this case, there is a higher voltage than on the low-voltage DC circuit 3 , Each of the DC circuits 2 and 3 For example, has at least one consumer 4 or 5. As a consumer 4 For example, a heater or a driver assistance device, in particular a power steering system, may be provided be. The consumer 4 as well as the consumer 5 are each a capacitor 6 respectively 7 for voltage smoothing connected in parallel.
  • The two DC circuits 2 and 3 are about a three-phase configuration 8th connected with each other. The three-phase arrangement 8th consists of an inverter, not shown here 9 as well as a three-phase machine, also not shown 10 , The high voltage DC circuit 2 has a first pole 11 and a second pole 12 , Similarly, the low-voltage DC circuit 3 over a first pole 13 and a second pole 14 , In the case of the first embodiment, the second pole corresponds 12 of the high voltage DC circuit 2 the second pole 14 of the low voltage DC circuit 3 so that there is therefore the same reference ground. The first poles 11 and 13 In this respect, make positive and the second poles 12 and 14 Negative poles of the DC circuits 2 and 3 represents.
  • The 2 shows a second variant of the first embodiment. Basically, the second variant of the first variant, so reference is made to the above statements. The only difference is that the capacitor 6 not parallel to the consumer 4 is switched, but between the first pole 11 of the high voltage DC circuit 2 and the first pole 13 of the low voltage DC circuit 3 ,
  • The 3 shows a second embodiment. Again, in principle, reference is made to the above statements. The difference from the first variant of the first embodiment is that the second poles 12 and 14 are executed separately from each other and therefore electrically separate from each other. In such an embodiment, therefore, there is no common reference ground of the two DC circuits 2 and 3 in front. Of course, the capacitor 6 be arranged as shown. Alternatively, however, an arrangement analogous to the second variant of the first embodiment is possible.
  • The 4 shows a detailed view of the second variant of the first embodiment, wherein the embodiments can also be used for the first variant. While the first embodiment basically with only a three-phase arrangement 8th can be realized, is now another three-phase arrangement 15 provided, which analogous to the three-phase arrangement 8th via an inverter 16 and a three-phase machine 17 features. The three-phase machine 10 and also the three-phase machine 17 are three-phase and thus each have three outer conductors 18 . 19 and 20 respectively 21 . 22 and 23 on. Each of these outer conductors 18 to 23 are each a high-side switch 24 as well as a low-side switch 25 assigned. About the high-side switch 24 are the outer conductors 18 to 23 each at the first pole 11 of the high voltage DC circuit 2 and over the low-side switches 25 to the second pole 12 of the high voltage DC circuit 2 electrically connected.
  • A neutral conductor 26 respectively 27 the three-phase machines 10 and 17 is against the first pole 13 of the low voltage DC circuit 3 connected. As already explained above for the first embodiment, the two poles fall 12 and 14 together or are directly electrically connected. In the embodiment shown here, each of the DC circuits 2 and 3 via an energy storage 28 respectively 29 , which is a voltage corresponding to the voltage of the respective DC circuit 2 respectively 3 provides. The energy storage 28 and 29 are preferably designed as accumulators and / or capacitors with particularly high capacity (SuperCaps). By way of example, here are the consumers 4 and 5 indicated. They can be parallel to the respective energy storage 28 respectively 29 be switched. Alternatively, a series circuit with the energy storage 28 respectively 29 or an order of the consumer 4 respectively 5 instead of the energy store 28 respectively 29 possible.
  • The 5 shows a detailed view of the second embodiment. Again, reference should again be made to the entire foregoing. It is now envisaged that the neutral conductor 27 to the first pole 13 and the neutral conductor 26 to the second pole 14 of the low voltage DC circuit 3 are connected. So there is no common ground reference. It can be seen that capacitors 30 . 31 . 32 and 33 are provided. About the capacitor 30 are the second pole 14 and the first pole 11 , over the capacitor 32 the second pole 14 and the second pole 12 , over the capacitor 33 the first pole 13 and the first pole 11 as well as the capacitor 33 the first pole 13 and the second pole 12 electrically connected to each other.
  • By suitable control of the three-phase arrangements 8th and 9 , in particular the inverter 9 and 16 , now can be different modes of the circuit 1 realize. These have already been discussed in detail above.
  • LIST OF REFERENCE NUMBERS
  • 1
    circuitry
    2
    High voltage direct current circuit
    3
    Low voltage DC circuit
    4
    consumer
    5
    consumer
    6
    capacitor
    7
    capacitor
    8th
    Three-phase arrangement
    9
    inverter
    10
    Phase machine
    11
    1 Pole
    12
    2 Pol
    13
    1 Pole
    14
    2 Pol
    15
    Three-phase arrangement
    16
    inverter
    17
    Phase machine
    18
    outer conductor
    19
    outer conductor
    20
    outer conductor
    21
    outer conductor
    22
    outer conductor
    23
    outer conductor
    24
    High-side switch
    25
    Low-side switch
    26
    neutral
    27
    neutral
    28
    energy storage
    29
    energy storage
    30
    capacitor
    31
    capacitor
    32
    capacitor
    33
    capacitor
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
  • Cited patent literature
    • US8013553 B2 [0002]

Claims (10)

  1. Circuit arrangement ( 1 ) with a high-voltage DC circuit ( 2 ) and a low voltage DC circuit ( 3 ), which have at least one three-phase arrangement ( 8th ), consisting of an inverter ( 9 ) as well as a three-phase machine ( 10 ), are electrically connected to each other, wherein the outer conductor ( 18 . 19 . 20 ) of the three-phase machine ( 10 ) via the inverter ( 9 ) to the high voltage DC circuit ( 2 ) and the neutral conductor ( 26 ) of the three-phase machine ( 10 ) to the low voltage DC circuit ( 3 ), characterized in that the high-voltage direct current circuit ( 2 ) and / or the low-voltage DC circuit ( 3 ) at least one electrical consumer ( 4 . 5 ) and the three-phase arrangement ( 8th ) for voltage conversion between the high voltage DC circuit ( 2 ) and the low voltage DC circuit ( 3 ) is trained.
  2. Circuit arrangement according to Claim 1, characterized in that the inverter ( 9 ) for each external conductor ( 18 . 19 . 20 ) of the three-phase machine ( 10 ) a high-side switch ( 24 ) and a low-side switch ( 25 ), wherein the outer conductor ( 18 . 19 . 20 ) via the high-side switch ( 24 ) to a first pole ( 11 ) of the high-voltage DC circuit ( 2 ) and via the low-side switch ( 25 ) to a second pole ( 12 ) of the high-voltage DC circuit ( 2 ) connected.
  3. Circuit arrangement according to one of the preceding claims, characterized in that a first pole ( 13 ) of the low voltage DC circuit ( 3 ) to the neutral conductor ( 26 ) connected.
  4. Circuit arrangement according to one of the preceding claims, characterized in that a second pole ( 14 ) of the low voltage DC circuit ( 3 ) the second pole ( 12 ) of the high-voltage DC circuit ( 3 ) corresponds.
  5. Circuit arrangement according to one of the preceding claims, characterized in that the first pole ( 13 ) of the low voltage DC circuit ( 2 ) with the first pole ( 11 ) of the high-voltage DC circuit ( 2 ) via a capacitor ( 6 . 33 ) connected is.
  6. Circuit arrangement according to one of the preceding claims, characterized in that a further three-phase arrangement ( 15 ) and the second pole ( 14 ) of the low voltage DC circuit ( 3 ) to the neutral conductor ( 27 ) of a three-phase machine ( 17 ) of the further three-phase arrangement ( 15 ) connected.
  7. Circuit arrangement according to one of the preceding claims, characterized in that the first pole ( 13 ) and / or the second pole ( 14 ) of the low voltage DC circuit ( 3 ) with the first pole ( 11 ) and the second pole ( 12 ) of the high-voltage DC circuit ( 2 ) each via a capacitor ( 31 . 32 . 33 . 34 ) connected is.
  8. Circuit arrangement according to one of the preceding claims, characterized in that the electrical consumer ( 4 . 5 ) is designed as an inductive and / or resistive load.
  9. Circuit arrangement according to one of the preceding claims, characterized in that the low-voltage direct current circuit ( 3 ) and / or the high voltage DC circuit ( 2 ) an energy store ( 28 . 29 ) assigned.
  10. Method for operating a circuit arrangement ( 1 ), in particular according to one or more of the preceding claims, wherein the circuit arrangement ( 1 ) a high voltage DC circuit ( 2 ) and a low voltage DC circuit ( 3 ), which via at least one three-phase arrangement ( 8th ), consisting of an inverter ( 9 ) as well as a three-phase machine ( 10 ), are electrically connected to each other, wherein the outer conductor ( 18 . 19 . 20 ) of the three-phase machine ( 10 ) via the inverter ( 9 ) to the high voltage DC circuit ( 2 ) and the neutral conductor ( 26 ) of the three-phase machine ( 10 ) to the low voltage DC circuit ( 3 ), characterized in that the high-voltage direct current circuit ( 2 ) and / or the low-voltage DC circuit ( 3 ) at least one electrical consumer ( 4 . 5 ) and the three-phase arrangement ( 8th ) for voltage conversion between the high voltage DC circuit ( 2 ) and the low voltage DC circuit ( 3 ) is driven.
DE201310008737 2013-05-23 2013-05-23 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 Ceased DE102013008737A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE201310008737 DE102013008737A1 (en) 2013-05-23 2013-05-23 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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201310008737 DE102013008737A1 (en) 2013-05-23 2013-05-23 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

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DE102013008737A1 true DE102013008737A1 (en) 2014-06-18

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DE201310008737 Ceased DE102013008737A1 (en) 2013-05-23 2013-05-23 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

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019096440A1 (en) * 2017-11-14 2019-05-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Energy transmission in the zero system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838296A1 (en) * 1998-08-24 2000-03-02 Bosch Gmbh Robert Dual voltage power supply for an on-board vehicle mains supply, includes a current generator that is coupled to the a battery and a rectifier/convertor arrangement
DE10244229A1 (en) * 2001-09-25 2003-04-17 Toyota Motor Co Ltd Power supply system and power supply method
US20060006833A1 (en) * 2004-07-06 2006-01-12 Wlodzimierz Koczara Electrical machine rotor position identification
US20090115355A1 (en) * 2005-09-21 2009-05-07 Toyota Jidosha Kabushiki Kaisha Electric Power Control Device, Electric Powered Vehicle Including the Same, and Method for Controlling Electric Power of Electric Powered Vehicle
US20090134700A1 (en) * 2007-11-22 2009-05-28 Denso Corporation Power supply system with multiphase motor and multiphase inverter
DE102009016556A1 (en) * 2008-04-15 2009-11-05 DENSO CORPORATION, Kariya-shi Driver for a synchronous electric motor
US8013553B2 (en) 2007-10-10 2011-09-06 Denso Corporation Rotary electric system with neutral-point powering system
DE102010047338A1 (en) * 2010-10-01 2012-04-05 Audi Ag Circuit device for use in motor car for coupling voltage terminals, has induction machine provided in neutral point circuit, and switch enabling manufacturing and disrupting of connection between neutral point and voltage terminal

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19838296A1 (en) * 1998-08-24 2000-03-02 Bosch Gmbh Robert Dual voltage power supply for an on-board vehicle mains supply, includes a current generator that is coupled to the a battery and a rectifier/convertor arrangement
DE10244229A1 (en) * 2001-09-25 2003-04-17 Toyota Motor Co Ltd Power supply system and power supply method
US20060006833A1 (en) * 2004-07-06 2006-01-12 Wlodzimierz Koczara Electrical machine rotor position identification
US20090115355A1 (en) * 2005-09-21 2009-05-07 Toyota Jidosha Kabushiki Kaisha Electric Power Control Device, Electric Powered Vehicle Including the Same, and Method for Controlling Electric Power of Electric Powered Vehicle
US8013553B2 (en) 2007-10-10 2011-09-06 Denso Corporation Rotary electric system with neutral-point powering system
US20090134700A1 (en) * 2007-11-22 2009-05-28 Denso Corporation Power supply system with multiphase motor and multiphase inverter
DE102009016556A1 (en) * 2008-04-15 2009-11-05 DENSO CORPORATION, Kariya-shi Driver for a synchronous electric motor
DE102010047338A1 (en) * 2010-10-01 2012-04-05 Audi Ag Circuit device for use in motor car for coupling voltage terminals, has induction machine provided in neutral point circuit, and switch enabling manufacturing and disrupting of connection between neutral point and voltage terminal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019096440A1 (en) * 2017-11-14 2019-05-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Energy transmission in the zero system

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