CN103249591B - 用于对牵引用电池充电的方法 - Google Patents

用于对牵引用电池充电的方法 Download PDF

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CN103249591B
CN103249591B CN201180058309.0A CN201180058309A CN103249591B CN 103249591 B CN103249591 B CN 103249591B CN 201180058309 A CN201180058309 A CN 201180058309A CN 103249591 B CN103249591 B CN 103249591B
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electric alternating
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CN103249591A (zh
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罗伯特·雅努谢夫斯基
于尔根·克特
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods 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 the energy transfer between the charging station and the vehicle
    • B60L53/14Conductive energy transfer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20Methods 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20Methods 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
    • B60L53/24Using the vehicle's propulsion converter for charging
    • 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/40Conversion of ac power input into dc power output without possibility of reversal by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2220/00Electrical machine types; Structures or applications thereof
    • B60L2220/50Structural details of electrical machines
    • B60L2220/54Windings for different functions
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20Charging or discharging characterised by the power electronics converter
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12Conversion 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
    • H02M7/21Conversion 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
    • H02M7/217Conversion 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
    • H02M7/219Conversion 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P11/00Arrangements for controlling dynamo-electric converters
    • H02P11/06Arrangements for controlling dynamo-electric converters for controlling dynamo-electric converters having an ac output
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
    • H02P27/06Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric machine technologies in electromobility
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/70Energy storage systems for electromobility, e.g. batteries
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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    • Y02T90/12Electric charging stations
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10Technologies relating to charging of electric vehicles
    • Y02T90/14Plug-in electric vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

一种用于借助外部的交流电网、尤其是三相电网对牵引用电池(2)、尤其是机动车辆的牵引用电池充电的方法,其中,待充电的牵引用电池(2)经由逆变器(3)与电交变场机(4)耦接,其中,交流电网能与电交变场机(4)的相绕组(L1、L2、L3)接通,其中,电交变场机(4)的转速在第一步骤中与交流电网的电网频率同步;其中,在第二步骤中交流电网与电交变场机(4)的相绕组(L1、L2、L3)接通,并且与电交变场机(4)电耦接的逆变器(3)作为升压转换器来运行。

Description

用于对牵引用电池充电的方法
技术领域
本发明涉及一种用于对牵引用电池充电的方法,其中,待充电的牵引用电池经由逆变器与电交变场机耦接,其中,交流电网能与电交变场机的相绕组接通。
背景技术
在现有技术中例如由文献DE 196 52 950A1或文献EP 0 849 112A1公知如下,即,牵引用电池借助机动车辆的接到外部的交流电压源或三相电流源上的车载驱动***来充电。在此,驱动***的逆变器用作向电池方的升压转换器。在异步电机用作驱动机组的情况下,该异步电机为了避免高无功功率需求而在充电过程中处于静止并能够例如借助合适的绕组抽头有利地用于降低电网电压,也就是说不损害电池。异步电机的短路的转子绕组或短路式转子借助开关来打开以便对电池充电。
现有技术中所提出的布置方案的缺点在于,必须设置开关,为了对牵引用电池充电,这些开关中断仍旧短路的转子绕组。这种功率开关引起附加的成本和重量。
发明内容
由此出发,本发明的任务是克服上面所描述的现有技术的缺点并提出一种用于对牵引用电池充电的方法,该方法使省去这种开关成为可能。
该任务以如下方式来解决,即,使电交变场机的转速在第一步骤中与交流电网的电网频率同步;在第二步骤中交流电网与电交变场机的相绕组接通,并且与电交变场机电耦接的逆变器作为升压转换器来运行。
具体地,根据本发明提出了一种用于借助外部的交流电网、尤其是三相电网对牵引用电池、尤其是机动车辆的牵引用电池充电的方法,其中,待充电的牵引用电池经由逆变器与电交变场机耦接,其中,交流电网能与电交变场机的相绕组接通,其中,电交变场机的转速在第一步骤中与交流电网的电网频率同步;其中,在第二步骤中交流电网与电交变场机的相绕组接通,并且与电交变场机电耦接的逆变器作为升压转换器来运行。在此,相绕组尤其是电交变场机的馈电相绕组。
根据依据本发明的方法的一个方面,在以同步为目的的第一步骤中,逆变器驱动电交变场机或者说为电交变场机馈电,尤其是借助牵引用电池来驱动电交变场机或者说为电交变场机馈电。
根据依据本发明的方法的另一方面,逆变器在第二步骤中向牵引用电池方作为升压转换器来工作。
根据依据本发明的方法的又一方面,电交变场机在第一步骤之前与传动系、尤其是机动车辆的传动系分离,此外,尤其是借助于分离离合器来分离。
根据本发明,还提出了一种方法,其中,电交变场机在第一步骤之后以空转的方式运行。
根据本发明,又提出了一种方法,其中,电交变场机构造为异步电机,尤其是具有呈三角形接线的相绕组的异步电机。
根据依据本发明的方法的一个方面,交流电网在同步点与相绕组接通,尤其是借助同步装置和/或接通装置。
根据依据本发明的方法的另一方面,在第二步骤中,尤其是借助相绕组上的绕组抽头,至少暂时地以相对于电网电压降低了的电压从电交变场机对逆变器进行馈电。
根据依据本发明的方法的又一方面,降低了的电压的峰值处于牵引用电池的电池电压之下。
根据本发明还提出了一种用于执行根据本发明的方法的尤其是用于机动车辆的装置。
本发明的其他特征和优点从以下参照示出本发明的重要细节的附图的图示对本发明的实施例的说明和从权利要求中得到。在本发明的变型方案中,单个的特征可以单独地或多个地以任意组合的方式来实现。
附图说明
下面参照附图更为详细地阐述了本发明示例性的实施形式。其中:
图1示例性地示出了根据本发明的一个可能的实施形式的用于执行根据本发明的方法的装置;以及
图2示例性地示出了根据本发明的另一可能的实施形式的用于执行根据本发明的方法的装置。
在下面的附图说明中,相同的元件或功能设有相同的附图标记。
具体实施方式
图1和图2分别示例性地示出了根据本发明的用于对电池或牵引用电池2充电的装置1,构造该装置用于执行根据本发明的方法。牵引用电池2在此情况下尤其为装置1的组成部分。
待充电的牵引用电池2例如形成为可重复充电的电池或蓄电池,例如借助一个或多个电池单元形成。形成牵引用电池2的电池单元例如可以并联或串联地联接在一起,其中,这些电池单元例如具有共同的输出端。替选地,代替牵引用电池2根据本发明例如可以借助装置1对其他能量存储元件充电,例如超级电容器。
牵引用电池2借助或经由装置1的逆变器3与装置1的电交变场机4尤其是感应式电机以及此外尤其与异步电机耦接或作用连接。异步电机尤其形成为短路式转子异步电机,优选带有鼠笼型转子。
逆变器3尤其是为了如下目的而设置为脉冲逆变器,即,为了驱动而适当地馈送或激励电交变场机4,例如利用PWM,并且例如将待从电交变场机4回收的能量适当地回馈至牵引用电池2中。尤其与控制装置(未示出)配合作用的逆变器3在此情况下以常规方式借助多个桥支路形成,例如借助B6电桥形成。在每个桥支路中布置有两个开关,例如MOSFET或IGBT以及各一个反并联地配属给相应开关的续流二极管。
逆变器3(通过每个桥支路的开关之间的桥中点)与电交变场机4电耦接。为此,逆变器3在交流电压侧与电交变场机4的为了电交变场机4的馈电而设置的相绕组L1、L2、L3导电地连接或能导电地连接,其中,相绕组尤其为电交变场机4的定子的相绕组L1、L2、L3。相绕组L1、L2、L3在此情况下为馈电相绕组(Speisestrangwicklungen),通过馈电相绕组设置有用以运行或驱动电交变场机4的能量馈给装置。
逆变器3例如通过连接线路u、v、w尤其是分别与相应的相绕组L1、L2、L3的联接端子4a、4b、4c耦接(图1),或者例如与分别在相绕组L1、L2、L3上的绕组抽头4c、4d、4e耦接(图2)。在异步电机的情况下,逆变器3尤其与呈三角形接线的相绕组L1、L2、L3耦接,也就是与异步电机的定子绕组耦接。
在本发明的范围中,牵引用电池2、逆变器3以及电机尤其相应地为特别是机动车辆的电驱动***例如混合驱动***的一部分。
根据本发明,装置1设计为与外部的交流电网、尤其是三相电网连接,以便对牵引用电池2充电。这样的交流电网例如可以向能量供给装置5例如充电桩提供能量,其中,这样的能量供给装置5尤其是固定地为外部的交流电网尤其是三相电网准备。交流电网的能供给的电压例如可以为230V或例如400V。
为了尤其根据本发明地与固定的能量供给装置5或供能量供给装置5使用的交流电网连接,装置1例如具有开关或接通装置6,其具有用于与外部的能量供给装置6或外部的交流电网连接的电输入端6a并且开关或接通装置6在输出侧也就是在电输出端6b与电交变场机4的相绕组L1、L2、L3电耦接或能电耦接,即,导电地连接或能导电地连接。
接通装置6能够实现选择性地中断其输入端6a与输出端6b之间的电连接,也就是说将与输入端6a连接的外部的交流电网与电交变场机4接通,即,与其相绕组L1、L2、L3接通,以及将交流电网与相绕组L1、L2、L3断开。外部的交流电网在与相绕组L1、L2、L3接通时尤其与联接端子4a、4b、4c联接(图1和图2)。
接通装置6根据本发明尤其同样为驱动***的组成部分,然而也可以例如与驱动***分开地形成。开关过程通过接通装置6例如借助至少一个尤其是电激励的保护装置来执行。
在根据本发明的方法中(该方法能利用上述装置1来执行)规定如下,即,电交变场机4的转速或频率在第一步骤中与交流电网的电网频率同步,即电交变场机4处于使转子转动的运行中。为此,借助逆变器3适当地激励电交变场机4,例如利用PWM来激励。
为了同步的目的,例如借助例如接通装置6的并联装置形式的同步装置7来探知交流电网的和电交变场机4的各种参数并进行相互比较,即,至少将电交变场机4的或其转子的转速或频率与交流电网的电网频率进行比较。电交变场机4的馈电在同步期间借助牵引用电池2尤其是待充电的牵引用电池2来进行。
通过电交变场机4与交流电网的或三相电网的电网频率的同步,电交变场机4在交流电网接通或接入电交变场机4的相绕组L1、L2、L3时也就是在开始根据本发明的第二步骤时随即无转矩地即空转地借助外部的交流电网来运行,电交变场机4与例如机动车辆的传动系的分离例如借助分离离合器特别是相应地在所述同步之前进行。此外,通过电交变场机4根据本发明地以例如50Hz的电网频率同步转动,电交变场机4的无功功率需求能够保持在低的或最小的水平,尤其是在第二步骤中对牵引用电池2充电的持续时间期间。
按照根据本发明的第二步骤,交流电网与相绕组L1、L2、L3的接通优选在同步点也就是说在如下时刻进行,即,在该时刻,电交变场机4的和交流电网的相比较的参数以所期望的一致性来调节。尤其在同步点时或在进行电交变场机4的转速与电网频率的同步时,外部的交流电网与电交变场机4接通例如并联(图1),尤其是通过接通开关装置6的方式,即,开关装置6的输出端6b和输入端6a导电地连接。
在电交变场机4与外部的交流电网接通之后,逆变器3现在根据本发明作为升压转换器也就是向牵引用电池方作为升压转换器地工作。在此,变换至升压转换器工作方式由控制装置引起,该控制装置尤其与接通装置6配合作用。
根据本发明还规定如下,即,降低或可以降低外部的电网电压以避免牵引用电池2的损坏,也就是在对牵引用电池2充电时从电交变场机4为逆变器3提供相对于外部的电网电压较低的交流电压,其中,交流电网的交流电压向下地变换到牵引用电池电压之下的峰值。
为此,有利地使用电交变场机4的相绕组L1、L2、L3,它们尤其是异步电机的定子侧的相绕组。例如,逆变器3有利地与相绕组L1、L2、L3上的分接头或绕组抽头4d、4e、4f连接或电耦接,即,与各绕组L1、L1、L3的各绕组抽头4d、4e、4f连接或电耦接。在此,电交变场机4用作自耦变压器(图2)。对电网电流的有利的平滑在此可以通过漏电感来实现。
这样,在第二步骤中从电交变场机4为逆变器3馈送或供给相对于交流电网电压降低了的电压,其中,至少暂时地设置有电压降低。电压降低也可以替选地例如借助第二电流隔离的定子绕组来进行,其中,电压降低通过绕组比来实现。
在根据本发明的方法中,在逆变器3的升压转换器运行中,同步地一起转动的电交变场机4“以近似发电机的方式”有利地支持外部的交流电网。这能够实现牵引用电池2的稳定且快速的充电过程。如现有技术中那样的开关是不必要的。
附图标记
1             用于对牵引用电池充电的装置
2             牵引用电池
3             逆变器
4             电交变场机
4a、4b、4c    相绕组的联接部
4d、4e、4f    绕组抽头
5             外部的能量供给装置
6             接通装置
6a            6的输入端
6b            6的输出端
7             同步装置
u、v、w       连接线路
L1、L2、L3    相绕组

Claims (18)

1.一种用于借助外部的交流电网对牵引用电池(2)充电的方法,其中,待充电的牵引用电池(2)经由逆变器(3)与电交变场机(4)耦接,其中,所述交流电网能与所述电交变场机(4)的相绕组(L1、L2、L3)接通,其特征在于,所述电交变场机(4)的转速在第一步骤中与所述交流电网的电网频率同步;在第二步骤中所述交流电网与所述电交变场机(4)的相绕组(L1、L2、L3)接通,并且与所述电交变场机(4)电耦接的逆变器(3)作为升压转换器来运行。
2.根据权利要求1所述的方法,其特征在于,在以同步为目的的第一步骤中,所述逆变器(3)驱动所述电交变场机(4)或为所述电交变场机馈电。
3.根据权利要求1所述的方法,其特征在于,在以同步为目的的第一步骤中,所述逆变器(3)借助所述牵引用电池(2)来驱动所述电交变场机(4)或为所述电交变场机馈电。
4.根据权利要求1至3之一所述的方法,其特征在于,所述逆变器(3)在所述第二步骤中向所述牵引用电池(2)方作为升压转换器来工作。
5.根据权利要求1所述的方法,其特征在于,所述电交变场机(4)在所述第一步骤之前与传动系分离。
6.根据权利要求1所述的方法,其特征在于,所述电交变场机(4)在所述第一步骤之前借助于分离离合器来与传动系分离。
7.根据权利要求5或6所述的方法,所述传动系是机动车辆的传动系。
8.根据权利要求1至3、5、6之一所述的方法,其特征在于,所述电交变场机(4)在所述第一步骤之后以空转的方式运行。
9.根据权利要求1至3、5、6之一所述的方法,其特征在于,所述电交变场机(4)构造为异步电机。
10.根据权利要求1至3、5、6之一所述的方法,其特征在于,所述电交变场机(4)构造为具有呈三角形接线的相绕组(L1、L2、L3)的异步电机。
11.根据权利要求1至3、5、6之一所述的方法,其特征在于,所述交流电网在同步点与所述相绕组(L1、L2、L3)接通。
12.根据权利要求1至3、5、6之一所述的方法,其特征在于,所述交流电网在同步点借助同步装置(7)和/或接通装置(6)与所述相绕组(L1、L2、L3)接通。
13.根据权利要求1所述的方法,其特征在于,在所述第二步骤中,至少暂时地以相对于电网电压降低了的电压从所述电交变场机(4)对所述逆变器(3)进行馈电。
14.根据权利要求1所述的方法,其特征在于,在所述第二步骤中,借助相绕组(L1、L2、L3)上的绕组抽头(4d、4e、4f),至少暂时地以相对于电网电压降低了的电压从所述电交变场机(4)对所述逆变器(3)进行馈电。
15.根据权利要求13或14所述的方法,其特征在于,所述降低了的电压的峰值处于所述牵引用电池(2)的电池电压之下。
16.根据权利要求1至3、5、6、13、14之一所述的方法,其特征在于,所述牵引用电池(2)是机动车辆的牵引用电池。
17.根据权利要求1至3、5、6、13、14之一所述的方法,其特征在于,所述交流电网是三相电网。
18.一种用于执行根据权利要求1至17之一所述的方法的装置。
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