• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SE1050607A1
    申请号:SE1050607
    申请日:2010-06-14
    公开日:2011-12-15
    发明作者:Mats Alakuela；Saeid Haghbin
    申请人:
    IPC主号:
    专利说明:

    102of an imaginary electric vehicle fleet will likely be charged at night from normalA socket, which still gives a relatively long mileage during a night of 10hours, probably more than the battery on board can receive. With a largespeech electric vehicles, however, it is likely that many of these will need"Fast charge" even during the day, e.g. with 22 kW as from a 400 V 3 phase 32 Asocket. Because the charging time for these still becomes comparatively long (typically 30 more60 minutes) it is probably not reasonable with special charging sockets as it shouldrequired very many compared to today's gas stations. Instead, it is required thatthe vehicle can be charged from a standard electrical outlet, e.g. everything from 230 V 10 A1 phase to400 V 32 A 3 fas. These can be mounted on at a very low costvery many places, e.g. in car parks at residential areas, shopping centers,office, Industrial properties etc.
    STATE OF THE ARTIn order for a vehicle to be able to use a standard electrical outlet, it is necessary tothe device itself carries the necessary charging equipment. With capacity forcharging up to 400 V 32 A 3-phase means that a fairly heavy (> 100 kg)and expensive (> 10,000 SEK) equipment is needed on board. Because an electric vehiclefrom the beginning is expensive, mainly due to the cost of the batteries, soit is charged by the need for chargers of additional costs.
    An example of a construction that consists of a divisible motor windingis shown and described in JP10248172. Part of the motor winding can, when chargingconnected to the network. The design requires a single-phase connection and drivewith so-called ‘common mode’ current, ie the same current intowers all three phases.
    US5341075 discloses and describes a combined engine operation and batteryrecharging system. Two of the motor's three phase windings are used as inductorsfor single-phase charging of an electric vehicle battery. A prerequisite is that the battery voltageis higher than the maximum instantaneous value of the mains voltage. An essentialdisadvantage is that no galvanic insulation between mains and battery canachieved. A similar solution is described in US5099186. Two completely separateAH p4314seO0 ps svfinal.doc 10-06-14 ver. 63motor windings are used, however. Another similar solution is shown and discussed.is written in US4920475.
    In accordance with the prior art described above, galvanic insulation istion in connection with the charging of the batteries is not possible. Another disadvantageis that the power made available for charging is too low. Special chargingarmor can be used, but then both weight and cost increase.
    THE INVENTION IN SUMMARYOne way to reduce these costs is to use them in a new wayof equipment already on board. An electric vehicle has at least one so-called electricrisk drive system, including a power electronic converter and a tractortion engine. The traction motor is an electric machine / electric motor with a number of windingare. Through an advanced department and switching of the windings andother components, they may in certain circumstances be used asdare.
    The electric motor is provided with at least one three-phase winding, comprisinga plurality of windings, which are connected via a set of switches. Give-By setting the switches in different positions, the windings can be connected in seriesand connected in parallel in different ways in each phase. Thus, the electric motorproperties are fundamentally changing.
    In accordance with the invention, the traction motor is used as a transformer.part of the windings being used as primary winding, driven by electricnetwork, and partly as secondary winding, where the power electronic motor driveacts as a rectifier. A prerequisite is that the windings at normalmotor operation can absorb the voltage that is adapted to the battery, as well as that theywindings which at a connection point are connected to a three-phase network at the frequency50 Hz (in some countries 60 Hz) keeps the mains voltage at the connection point.
    During charging, the mains drives the traction machine (as a motor) throughthe mains-wound winding. At the same time, the motor drive system slows down the tractionthe machine (as a generator). Some of the power is transmitted via the rotor, but someAH p4314seO0 ps svfinal.doc 10-06-14 ver. 64is also transmitted via the magnetic coupling between what can be calledprimary and secondary winding of the divided windings.
    The solution entails two significant advantages over prior art.
    First, charging from a conventional three-phase mains socket is allowed. Forthe second provides complete galvanic isolation between the mains and the batterycircuit. By special connection, single-phase charging can also be achieved.
    In the description below, the following is assumed to be known: the mains voltage throughUn, [Volt RMS, Phase-Phase], the mains frequency through the fn and the motor drive systemmaximum output voltage through Um, [Volt RMS, Phase-Phase] (often determined by batteryteris voltage).
    The winding of the stator can be connected in two different operating modes, eithertraction or charging. When driving, the stator winding isdivided into a number (ngph) groups of three-phase windings (mm, = 1, 2, 3, ...), eachgroup consisting of npd connected in parallel and now, series-connecteddown in each phase winding. These three-phase windings can be connected in either Y-or D-coupling to match the voltage of the motor drive system.
    When charging, one of two options can be used:I) One or more of the groups of three-phase windings, total number,separated to be connected to the mains. The remaining three-phase groupsna (n3ph-n3phß) is used by the motor drive system.ll) The windings in one or more of the groups of three-phase windingsswitched to two electrically separate three-phase windings where one ofthese are connected to the three-phase mains and the other is connectedthe motor drive system.
    The part connected to the three-phase mains consists of npcg parallelconnected and nmg series-connected winding sections. The winding can thenconnected in either the Y or Delta coupling. The number of series and parallel connectedwinding sections are selected so that the voltage across these windings at apore speed corresponding to mains frequency (usually 50 Hz, in some countries 60 Hz)AH p4314seO0 ps svfinaLdoc 10-06-14 ver. 6is quite close to nominal mains voltage. This varies in different countries. INEurope is the 400 V mains voltage.
    The part connected to the motor drive system consists of npcd parallelconnected and nm, series-connected winding sections. The coupling is selected so thatthey form a three-phase system with as high a voltage as possible, but lower thanthe highest voltage that the motor drive system can emit.
    Charging can in accordance with the invention after switching according tothe detailed description is as follows.l)u)m)V)we)The traction engine is disengaged from the vehicle's transmission throughthat the gearbox is placed in neutral and any couplings are opened.
    The motor drive system detects voltage and phase sequence in thepoint in the electricity network from which it is intended to charge.
    The motor drive system revs up the traction motor to that speed andthe phase mode corresponding to the mains frequency and the mains voltagelocation.
    The motor drive system adjusts the traction motor voltage in thephase winding to be connected to the mains so that the voltage acrossthe three-phase winding corresponds to the mains voltage.
    The motor drive system then engages the three-phase winding whichshall be connected to the mains during charging.
    The motor drive system finally loads the mains by brakingthe traction motor by controlling its currents, whereby electricpower flows from the mains via the traction motor to the battery.
    BRIEF DESCRIPTION OF THE DRAWINGSIn order to describe in an easy - to - understand way how the above andother advantages and objects of the invention are achieved, a more detailedwriting of the invention briefly described above with reference toparticular embodiments thereof, which are shown in the following figures.
    AH p4314seO0 ps svfinaLdoc 10-06-14 ver. 66It should be noted that the figures show only specific embodiments ofinvention and should not be construed as limiting its scope. With respectin addition, the invention will be described and explained in more detail and indetail with the support of accompanying figures, on whichFIG.
    FIG.
    FIG.
    FIG.
    FIG.
    FIG.
    FIG.
    FIG.
    FIG.
    FIG.1schematically shows a vehicle with battery and drive system, as via aswitching devices are connected to an electrical network for chargingbattery,schematically shows a drive system engaged for propulsion of a vehicleusing power from a battery,schematically shows the drive system shown in Fig. 1, but now connectedfor charging the battery,is a block diagram schematically showing an electrical appliance in oneaccording to the invention connected to a battery,shows the electrical appliance in Fig. 4 connected in a first forintended position,shows the electrical appliance in Fig. 4 connected in a second for chargingintended position,schematically shows an embodiment in accordance with the invention with astator winding Y-coupled for drive,schematically shows an embodiment in accordance with the invention with astator winding divided into two with the three-phase network and drive systemconnected Y-coupled three-phase windings, each comprisinga plurality of series and parallel connected winding sections,schematically shows an embodiment in accordance with the invention with astator winding divided into a D-coupled three-phase winding for connectionto the three-phase network and a Y-connected three-phase winding connected to the drivesystem, which three-phase windings individually comprise a plurality of seriesand parallel wound winding sections andschematically shows an embodiment in accordance with the invention with twoseparate stator windings divided into a D-coupled three-phase windingfor connection to the three-phase network and a Y-connected three-phase windingAH p4314seO0 ps svfinaLdoc 10-06-14 ver. 67connected to the drive system, which three-phase windings are individuallytakes a plurality of series and parallel connected winding sections.
    THE INVENTIONIn the embodiment shown in Fig. 1, a vehicle 10 is provided with an electricapparatus 12 in accordance with the invention. The electrical appliance 12 containscomprises a drive system 14 and an electric machine 16 for propelling vehicles.A battery 18 is provided in the vehicle for driving the electrical appliance.ready. The battery 18 can be charged by connecting to a three-phase network 20. In the iThe embodiment shown in Fig. 1 is the battery connected to the three-phase network 20 via a socalled charging post 22 constituting the connection point and the electrical onethe apparatus 12. The electrical apparatus 12 also includes a switching device.order 24 and at least one stator winding 26.
    When driving the vehicle 10, the electrical device 12 is switched onand controlled so that it corresponds to the circuit diagram shown in Fig. 2. Statorlind-26 is D-connected with two pairs of series-connected and parallel-connected windings.sections L1-L12 in three phases. The drive system 14 includes a transducer28, which converts the DC voltage available from the battery 18 into afor the electrical machine 16 adapted alternating voltage. Drive system 14is controlled by a control unit 30, which is actuated by a driver of the vehicle with acontrol 32. The electric machine is used in this position as the tractiontor.
    When charging the battery 18 in the vehicle 10 is the electrical appliance12 is connected and controlled so that it corresponds to the circuit diagram shown in Fig. 3.food. The stator winding 26 is divided by means of the switching devicein a Y-coupled first part and a D-coupled second part. Stator winding 26both parts are magnetically coupled to each other by the Y-coupledthe first part acts as the primary winding and the D-connected second partacts as a secondary winding.
    The primary winding with the winding sections L1-L6 is connected tothe three-phase network 20 and the secondary winding with the winding sections L7-L12 areAH p4314seO0 ps svfinal.doc 10-06-14 ver. 68connected to the battery via a rectifier 34 of the drive system 14. Underthe charge drives the three-phase network the electric machine through which a motor passesthe mains-connected primary winding, at the same time as that of the control unit 30as the drive system 14 brakes the traction motor as a generator. Part of thethe power is transmitted magnetically via a rotor and another part of the power is transmittedcarried via the direct magnetic coupling between the primary and secondarywinding, which is indicated by the arrow C. The winding section is suitably distributed.so that primary winding and secondary winding have the same effect.
    Fig. 4 alternatively shows an electrical apparatus 12 in accordance withthe invention connected to an electrical network 20 and a battery 18.the system 14 with its control unit 30 switches via the switching device 24the stator winding 26 in a suitable manner for driving and charging, respectively. if-the coupling device 24 preferably comprises mechanical switches,but also different types of electronic switches and semiconductor switchesCan be used.
    The electrical apparatus 12 shown in Fig. 4 is in the wiring diagram inFig. 5 connected for drive. With appropriate selection of connection pointsof the switching device 24, the stator winding 26 is Y-coupled with fourparallel-connected pairs of series-connected winding sections in each phase. Bat-the drive 18 operates via the drive system 14 and the converter 28 on their ownconventional way. The three-phase network 20 is not connected to it in this positionelectrical appliance. The stator winding can also be D-connected.
    In the example in Fig. 6, the electrical device 12 is connected insteadcharge. Same set of winding sections as in the embodiment according towith Fig. 5 is after switching of the coupling device 24 divided into a Y-connected primary winding and a Y-connected secondary winding. Primary windingone comprises four series-connected winding sections in each phase, as wellthe secondary winding. One or both windings can also be D-connected.
    Fig. 7 shows an example of connection of an electrical appliance in accordance withaccording to the invention with a three-phase system Y-coupled for drive. In eachphase is npd parallel-connected groups of nsd series-connected winding sections.AH p4314seO0 ps svfinal.doc 10-06-14 ver. 69connected to the drive system 14. All winding sections are included in thetorlindningen 26.
    In Fig. 8, the electrical apparatus according to the invention is coupledcharge for charging. A Y-coupled primary winding with npcg groups of nscg seriesconnected winding sections are connected to the three-phase network 20. A Y-connectedsecondary winding with npcd groups of um; series-connected winding sectionsare connected to the drive system 14. All winding sections are included in thetorlindningen 26. Which of the windings, or both windings can ininstead be D-connected.Charging from a single-phase system is also possible in accordance with the invention.ningen. In the case that the primary winding is Y-connected, the three-phase network can alsozero be connected, as indicated in Ai Fig. 8, and two of the three phases inthe primary winding be connected, as indicated at B and C, respectively, also inFig. 8. In the case that the primary winding is instead D-connected, one of the three canthe phases of the primary winding must be connected.
    In Fig. 9, the electrical apparatus according to the invention is coupledcharge for charging. A D-coupled primary winding with npcg groups of nscg seriesconnected winding sections are connected to the three-phase network 20. A Y-connectedsecondary winding with npcd groups of mm; series-connected winding sectionsare connected to the drive system 14. All winding sections are included in thetorlindningen 26.
    In the exemplary embodiment shown in Fig. 10, two three-phase systems are used. Onethe first three-phase system is D-connected and constitutes one connected to the three-phase network 20primary winding. The primary winding comprises of npcg groups of nscg series connectors.let induction sections. A separate second three-phase system is Y-connected andmakes a secondary winding connected to the drive system 14. Secondary windingone includes npcd groups of nm, series-connected winding sections.
    In the description above, certain specific embodiments have been described. The tor-however, they will be apparent to one skilled in the artthat modifications can be readily accomplished within the scope of the invention.ken. Subsequent claims should therefore not be considered limited to itAH p4314seO0 ps svfinaLdoc 10-06-14 ver. 6'IOshown in the description, but shall be construed to include suchskills obvious to the person skilled in the art in the relevant technical field.the.
    AH p4314seO0 ps svfinaLdoc 10-06-14 ver. 6
    权利要求:
    Claims (12)
    [1]
    An electrical apparatus, comprising a drive system and an electric machine for propelling a vehicle, the electric machine comprising at least one rotor and at least one stator winding and can be connected via a connection point to a three-phase network, characterized in that: that the stator winding is switchable between at least a first position, in which it is electrically controlled by the drive system when propelling the vehicle, and a second position, in which it is divided into at least two separate and magnetic direct, and indirectly via the rotor, coupled three-phase windings for converting a voltage level available in the three-phase network, a divided first and consisting of a first set of windings three-phase winding at a rotor speed corresponding to the frequency of the three-phase network has a voltage corresponding to the voltage level at the connection point, a divided and second set of electrically adapted to the drive system and winding the windings in the first set and the windings in the second set are respectively connected to the same switching device.
    [2]
    An electrical apparatus according to claim 1, comprising a converter for converting direct current to alternating current.
    [3]
    Electrical apparatus according to claim 1, comprising a rectifier for rectifying the alternating current available from the three-phase network to direct current.
    [4]
    An electrical apparatus according to claim 1, wherein the electrical machine comprises a stator winding, which stator winding is divisible into a first three-phase winding which can be connected separately to the three-phase network and a second three-phase winding connected to the drive system. AH p4314seO0 ps svfinaLdoc 10-06-14 ver. 6 10 15 20 25 30 12
    [5]
    An electrical apparatus according to claim 1, wherein the electrical machine comprises at least two stator windings, at least one of which stator windings are divisible into a first three-phase winding connectable separately to the three-phase network and at least one second three-phase winding connected to remaining stator windings with the drive system. .
    [6]
    Electrical apparatus according to claim 4 or claim 5, wherein the winding divided for connection to the three-phase network is connected only with its zero and one of the three phase connections.
    [7]
    Electrical apparatus according to any one of the preceding claims, wherein the electrical machine is a permanently magnetized synchronous machine.
    [8]
    An electrical apparatus according to any one of the preceding claims, wherein the electrical machine is an asynchronous machine.
    [9]
    An electrical apparatus according to any one of the preceding claims, wherein the electrical machine is an electrically magnetized synchronous machine.
    [10]
    An electrical appliance according to any one of the preceding claims, wherein the electrical machine is a synchronous reluctance machine.
    [11]
    An electrical apparatus according to any one of the preceding claims, wherein the electrical machine is a switched reluctance machine.
    [12]
    Method for generating rectified charging current from an electric drive system, the drive system being connected to a stator winding included in an electric machine, characterized in that the stator winding is switched from a first position in which it is connected. as a motor for propelling a vehicle, to a second position, that the electric machine in the second position is disengaged from the vehicle, AH p4314seO0 ps svfinaLdoc 10-06-14 ver. In the second position the electrical machine in the second position is connected at a connection point to a three-phase network, the stator winding in the second position is divided into at least two separate and magnetically coupled three-phase windings for conversion of a three-phase network. voltage network available voltage level, the electrical machine is wound up to speed and phase position corresponding to the mains frequency and phase position of the three-phase network, the voltage across a divided first and three-phase windings consisting of a first set of windings, by controlling the currents through a second and a the second set of windings consisting of three-phase winding is adjusted to a voltage corresponding to the voltage level of the three-phase network at the connection point, the first set of windings forms a primary winding and is connected to the three-phase network, the current through the second set of windings is controlled. from the three-phase network through the other as one second The second set of windings and a current emanating from the secondary winding are rectified. AH p4314seO0 ps svfinaLdoc 10-06-14 ver. 6
    类似技术:
    公开号 | 公开日 | 专利标题
    SE1050607A1|2011-12-15|Electrical apparatus including drive system and electric machine with switchable stator winding
    US9931939B2|2018-04-03|Electrical apparatus and method for charging a battery
    EP1899192B1|2019-09-11|Power generation system suitable for hybrid electric vehicles
    US8736203B2|2014-05-27|Inverter/charger integrated device and method for controlling the same
    CN107107763B|2020-03-24|Power supply circuit for power supply in electrically driven vehicle, and stationary energy supply system
    CN108475937A|2018-08-31|A kind of controller of inductive load to contain one or more induction coils
    KR20140057298A|2014-05-12|Converter circuit and method for transferring electrical energy
    Sakr et al.2014|A review of on-board integrated chargers for electric vehicles
    US9331515B2|2016-05-03|System for charging an energy store, and method for operating the charging system
    JP5727047B2|2015-06-03|System and method for charging an energy storage device
    CN104868517B|2018-07-17|Circuit, electric powertrain and the method for charging to battery
    CN103427680B|2018-03-27|Transformer tapping translation circuit and preparation method thereof
    CN103770656A|2014-05-07|Integrated driving/charging device
    CN106394277A|2017-02-15|Apparatus for controlling charging/discharging of battery
    US20120274246A1|2012-11-01|Electric drive and battery charging power electronic system
    CN110999016A|2020-04-10|Battery having an assembly including a cell group and a conversion module for supplying various voltages and performing various charging
    KR20160060970A|2016-05-31|Apparatus for charging battery of vehicle
    EP3928411A1|2021-12-29|Integrated charger and motor control system isolated by motor
    JP6305364B2|2018-04-04|Rotating electrical machine system
    JP2015513886A|2015-05-14|Electrical circuit for charging at least one electrical energy storage unit by means of an electrical network
    CN110774917B|2020-10-30|Vehicle-mounted charging and driving integrated device for electric automobile
    CA2787418A1|2014-02-21|System and method for managing a multiphase motor in an electric automotive vehicle
    同族专利:
    公开号 | 公开日
    WO2011159241A1|2011-12-22|
    SE534910C2|2012-02-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH0630505A|1992-01-31|1994-02-04|Fuji Electric Co Ltd|Electric system for electric automobile|
    JP3178146B2|1992-12-25|2001-06-18|富士電機株式会社|Electric vehicle electric system|
    DE19652950A1|1996-12-19|1998-07-02|Ask Antriebs Steuerungs Und In|Method and device for the execution of a battery-supported electric three-phase drive system with battery charging device|
    US7733039B2|2006-10-19|2010-06-08|Ut-Battelle, Llc|Electric vehicle system for charging and supplying electrical power|US9270182B2|2012-05-04|2016-02-23|Schneider Electric Industries Sas|Conversion stage, electric converter including such a conversion stage, device for converting an AC current into DC current including such a converter, terminal for recharging an electric battery including such a converter or conversion device|
    FR2990310B1|2012-05-04|2014-06-13|Schneider Electric Ind Sas|ELECTRIC CONVERTER, DEVICE FOR CONVERTING AN ALTERNATING CURRENT INTO A CONTINUOUS CURRENT COMPRISING SUCH A CONVERTER, AND TERMINAL FOR RECHARGING AN ELECTRIC BATTERY COMPRISING SUCH A CONVERTER OR CONVERSION DEVICE|
    US9931939B2|2012-06-05|2018-04-03|Volvo Lastvagnar Ab|Electrical apparatus and method for charging a battery|
    FR2998115B1|2012-11-13|2014-11-21|Schneider Electric Ind Sas|CONVERSION STAGE, ELECTRIC CONVERTER HAVING SUCH CONVERSION STAGE, DEVICE FOR CONVERTING AN ALTERNATING CURRENT INTO A CONTINUOUS CURRENT COMPRISING SUCH CONVERTER, AND TERMINAL FOR RECHARGING AN ELECTRIC BATTERY HAVING SUCH A CONVERTER OR CONVERSION DEVICE|
    EP3347963A4|2015-09-11|2019-01-16|Invertedpower Pty Ltd|A controller for an inductive load having one or more inductive windings|
    WO2018095868A1|2016-11-22|2018-05-31|Elaphe Pogonske Tehnologije D.O.O.|Integrated electric gear and charger system for battery powered electric vehicles|
    WO2018204964A1|2017-05-08|2018-11-15|Invertedpowder Pty Ltd|A vehicle charging station|
    DE102018200780A1|2017-05-16|2018-11-22|Ford Global Technologies, Llc|Plug-in hybrid vehicle with an internal combustion engine that can be charged by means of an exhaust gas turbocharger|
    DE102017221370A1|2017-11-29|2019-05-29|Ford Global Technologies, Llc|Fuel cell plug-in hybrid vehicle with charger for a battery charge from the grid|
    法律状态:
    2014-02-04| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE1050607A|SE534910C2|2010-06-14|2010-06-14|Electrical apparatus including drive system and electric machine with switchable stator winding|SE1050607A| SE534910C2|2010-06-14|2010-06-14|Electrical apparatus including drive system and electric machine with switchable stator winding|
    PCT/SE2011/050745| WO2011159241A1|2010-06-14|2011-06-15|Electrical apparatus comprising drive system and electrical machine with reconnectable stator winding|
    [返回顶部]