CN113937868B - 适用于大功率多电压多电源输出的可重构电动汽车充电桩 - Google Patents

适用于大功率多电压多电源输出的可重构电动汽车充电桩 Download PDF

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CN113937868B
CN113937868B CN202111209229.2A CN202111209229A CN113937868B CN 113937868 B CN113937868 B CN 113937868B CN 202111209229 A CN202111209229 A CN 202111209229A CN 113937868 B CN113937868 B CN 113937868B
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CN113937868A (zh
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刘赫
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Shenzhen Polytechnic
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • H02J7/04—Regulation of charging current or voltage
    • H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
    • 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
    • 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
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • 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
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac 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
    • H02M7/537—Conversion of dc power input into ac 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, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac 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, e.g. single switched pulse inverters in a bridge configuration
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • 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
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
    • 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
    • Y02T90/12—Electric charging stations
    • 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

Abstract

适用于大功率多电压多电源输出的可重构电动汽车充电桩，包括电动汽车充电系统本体、开关组合器、3脚模块化整流器、4脚模块化多电平逆变器、整流器；3脚模块化整流器的电源输入端和三相电源电性连接，3脚模块化整流器的电源输出端和4脚模块化多电平逆变器的电源输入端电性连接；4脚模块化多电平逆变器的电源输出端和整流器的电源输入端电性连接；开关组合器的多路电源输入端和整流器的多路电源输出端分别电性连接，电动汽车充电系统本体的识别单元及控制单元应用软件能控制开关组合器的多个输出端口分别并联及单独输出电源。本发明通用、灵活和可重构，减少了资金投入及运维成本，给不同车辆的充电带来了便利，利于增加多元化收入。

Description

适用于大功率多电压多电源输出的可重构电动汽车充电桩
技术领域
本发明涉及电动汽车充电桩设备技术领域，特别是一种适用于大功率多电压多电源输出的可重构电动汽车充电桩。
背景技术
电动汽车由于节能环保，应用越来越广泛，相应的电动汽车的充电站建设也越来越多。现有的电动汽车一般采用有线充电方式，电动汽车充电系统(充电站)一般包括整流逆变电路、补偿电路、充电端口及相应的控制模块等。应用时，车主把充电端口和车辆的充电插口相连，整流逆变电路将输入的交流电源转换为直流电源，再经补偿电路等处理后由充电端口输出为车辆蓄电池充电(控制模块对充电时间及充电量进行实时统计，并据此对充电者经第三方平台等进行收费)。
现有的电动汽车充电系统一般采用单向交流电源，其存在输出功率低，电源转换效率不高的缺点。还有就是，充电系统的充电端口只具有一个输出端口，一个端口只能输出一种电压及电流的直流充电电源，这样不同充电电压及蓄电池容量的电动汽车由于需要配备相适应的充电站，不但给设备方增加了资金投入、还导致了运维成本增加。最后就是，目前电动车辆的类型实际上不只是一种，还具有大量的两轮和三轮踏板车、轻型电动运载工具，以及最重要的具有社会包容性的设备残疾人专用电动轮椅车等。由于，现有的电动车辆充电站无法为上述车辆充电，不但给不同车辆的不同车主充电带来了极大不便，相应的也不利于充电站经营方增加多元化收入。综上所述，提供一种能实现通用、灵活和可重构的电池充电系统显得尤为必要。
发明内容
为了克服现有电动汽车充电系统因结构所限，由于采用单向交流电源，存在输出功率低，电源转换效率不高，只能实现为单一车辆蓄电池充电，不同充电电压及蓄电池容量的电动汽车由于需要配备相适应的充电站，不但给设备方增加了资金投入、并导致运维成本增加的缺点，以及由于无法为两轮、三轮踏板车、轻型电动运载工具、残疾人专用电动轮椅车等充电，给不同车辆的不同车主充电带来了极大不便，也不利于充电站经营方增加多元化收入的弊端，本发明提供了基于电动汽车充电系统本体，采用三相电源供电，减少了充电成本，并提高了输出功率，通过七脚背对背模块化多电平转换器为充电负载供电，工作时能防止对配电网络造成影响，并能防止变压器过载，且在相关应用单元等共同作用下，能根据充电负载的充电电压及电容量自动经开关组合器输出不同且和负载相适应的充电电源、为不同电动车辆充电，由此实现减少了运营方的资金投入及运维成本，并给不同车辆的不同车主充电带来了便利，利于充电站经营方增加多元化收入目的的适用于大功率多电压多电源输出的可重构电动汽车充电桩。
本发明解决其技术问题所采用的技术方案是：
适用于大功率多电压多电源输出的可重构电动汽车充电桩，包括电动汽车充电系统本体、开关组合器、3脚模块化整流器、4脚模块化多电平逆变器、AFE/PWM整流器；其特征在于所述3脚模块化整流器、4脚模块化多电平逆变器采用三相交流电源供电；所述3脚模块化整流器的电源输入端和三相交流电源电性连接，3脚模块化整流器的电源输出端和4脚模块化多电平逆变器的电源输入端电性连接；所述AFE/PWM整流器具有多路电源输出端，4脚模块化多电平逆变器的电源输出端和AFE/PWM整流器的电源输入端电性连接；所述开关组合器具有多路电源输入端，开关组合器的多路电源输入端和AFE/PWM整流器的多路电源输出端分别电性连接，开关组合器具有多个分别独立的电源充电端口；所述电动汽车充电系统本体具有识别单元及控制单元应用软件，识别单元及控制单元应用软件能控制开关组合器的多个输出端口分别并联及单独输出电源；所述识别单元及控制单元能控制电动汽车充电系统本体为车辆充电，还能控制电动汽车的蓄电池逆向输出电源到电动汽车充电系统本体作为能量源为供电电网提供电能。
进一步地，所述电源侧的3脚模块化整流器，负载侧的4脚模块化多电平逆变器，能消除充电中任何的电源不平衡或电能质量问题将能量传输回配电网络，对供电电源造成影响，在负载不均的情况下，4脚模块化多电平变换器的第四条腿为中性线电流提供路径，以防止自身变压器过载。
进一步地，所述电源侧的3脚模块化整流器除了将交流电转换为直流电，还可用于系统功率因数校正，并通过调制直流输出电压来控制整个无线充电系统的输出功率等级。
进一步地，所述4脚模块化多电平逆变器的三个单相绕组的中频变压器用于构成三相变压器，其中三相变压器的初级绕组采用星形连接，次级绕组独立去耦以产生多个独立输出。
进一步地，所述识别单元及控制单元还能控制关组合器的多个输出端口分别串联经充电端口输出电源。
进一步地，所述识别单元及控制单元控制关组合器的多个输出端口分别或组合输出电源时，输出的电源电压及电流能改变。
本发明有益效果是：本发明基于电动汽车充电系统本体，采用三相拓扑结构作为基础，在各模块电路共同作用下，通过三相电源给负载充电，减少了充电成本、提高了电源转换效率；本发明通过七脚背对背模块化多电平转换器为充电负载供电，工作时能防止对配电网络造成影响，并能防止变压器过载，且在相关应用单元等共同作用下，能根据充电负载的充电电压及电容量自动经开关组合器输出不同且和负载相适应的充电电源、为不同电动车辆充电，由此实现了通用、灵活和可重构，减少了运营方的资金投入及运维成本，并给不同车辆的不同车主充电带来了便利，利于充电站经营方增加多元化收入。本发明还能使车辆蓄电池输出的电源到电网，从而满足了未来智慧城市万物互联的需求。基于上述，所以本发明具有好的应用前景。
附图说明
以下结合附图和实施例将本发明做进一步说明。
图1是本发明结构示意图。
图2分别本发明拓扑结构示意图。
图3是本发明架构框图示意图。
具体实施方式
图1、2、3中所示，适用于大功率多电压多电源输出的可重构电动汽车充电桩，包括电动汽车充电系统本体、开关组合器、3脚模块化整流器、4脚模块化多电平逆变器、AFE/PWM整流器(将高频交流电转换为直流电，该整流器使用两腿单相结构)；所述3脚模块化整流器、4脚模块化多电平逆变器采用三相380V交流电源供电；所述3脚模块化整流器的电源输入端和380V交流电源经导线连接，3脚模块化整流器的电源输出端和4脚模块化多电平逆变器的电源输入端经导线连接；所述AFE/PWM整流器具有多路电源输出端，4脚模块化多电平逆变器的电源输出端和AFE/PWM整流器的电源输入端经导线连接；所述开关组合器具有多路电源输入端，开关组合器的多路电源输入端和AFE/PWM整流器的多路电源输出端分别经导线连接，开关组合器具有多个分别独立的电源充电端口；所述电动汽车充电系统本体具有识别单元及控制单元应用软件，识别单元及控制单元应用软件能控制开关组合器的多个输出端口分别并联或者单独输出电源；所述识别单元及控制单元能控制电动汽车充电系统本体为车辆充电，还能控制电动汽车的蓄电池逆向输出电源到电动汽车充电系统本体作为能量源为供电电网提供电能。
图1、2、3中所示，本发明采用三相低频交流电源用作充电桩(电动汽车充电系统本体)的能量供给，相比较于单相电源，三相电源更适用于大功率应用；此外，由于模块化多电平变换器的使用，本申请适用于超高电压输入，从而满足大功率需求。本申请中，电源侧的3脚模块化整流器，负载侧的4脚模块化多电平逆变器，选择此配置能消除充电中任何的电源不平衡或电能质量问题将能量传输回配电网络，对供电电源造成影响，此外在负载不均的情况下(即如果一个或多个电源输出端口未加载、没有输出电源)，4脚模块化多电平变换器的第四条腿为中性线电流提供路径，以防止自身变压器过载。电源侧的3脚模块化整流器除了将交流电转换为直流电，还可用于系统功率因数校正，并通过调制直流输出电压来控制整个无线充电系统的输出功率等级；4脚模块化多电平逆变器的三个单相绕组的中频变压器用于构成三相变压器，其中三相变压器的初级绕组采用星形连接，次级绕组独立去耦以产生多个独立输出；三相变压器除了电流隔离之外，如果需要，这些变压器还可以提供步进比。识别单元及控制单元还能控制关组合器的多个输出端口分别串联经充电端口输出电源。识别单元及控制单元控制关组合器的多个输出端口分别或组合输出电源时，输出的电源电压及电流能改变(需要说明的是，在实际应用中可使用继电器或者开关管通过控制器实现相应配置操作。)。本发明(AFE)PWM整流器模块结合其他部件经高频可实现更小的无源和滤波组件，(AFE)PWM整流器模块连接在三相变压器多个次级绕组上，形成多个独立的充电端口(单独输出电压)，标记为Vo1-三相变压器Vo6；虽然在本发明中只考虑了每个交流相两个输出端口，但是，原则上，这可以扩展到任意数量。
图1、2、3中所示，本发明提出的具有多电压多电源的可重构电动汽车充电桩(充电系统)是通过配置图2中所示的开关组合器在识别单元及控制单元控制下实现的。为简单起见，本实施例中的开关组合器在由以不同方式排列的简单直流连接器组成，以根据充电需要重新配置串联和/或并联的AFE模块。例如当S1，S2，S3，S4，S5，S6，S7，S8，S9，S10，S11，S12，S13，S14，S15全部断开时，该充电桩有6个充电输出端口，此时适用于低功率充电；当S1，S4，S7，S10，S13闭合，S2，S3，S5，S6，S3，S9，S11，S12，S14，S15断开时，该充电桩拥有3个充电输出端口，此时适用于中等功率等级充电；当S1，S4，S7，S10，S13断开，S2，S3，S5，S6，S8，S9，S11，S12，S14，S15闭合时，该充电桩拥有1个充电输出端口，此时适用于大功率超级快充；需要说明的是，根据开关组合器对的不同排列组合，本专利提出的充电桩可根据实际应用排列组合出不同的形态。
图1、2、3所示，本发明使用时，任何车辆的车主把本申请其中一个充电端口和车辆的充电插口相连后，识别单元能自动识别充电车辆的蓄电池充电电压及容量，从而控制单元能根据上述数据，能控制开关组合器的多个输出端口分别串联或并联经充电端口输出电源(比如串联及并联方式输出72V/5A电源为电动自行车充电)，充分满足相应车辆充电的电压及电流需要。经上述所有电路及单元模块作用，本发明基于电动汽车充电系统本体，采用三相拓扑结构作为基础，以三相电源给负载充电，减少了充电成本、提高了电源转换效率；能根据充电负载的充电电压及电容量自动经开关组合器输出不同且和负载相适应的充电电源、为不同电动车辆充电，由此实现了通用、灵活和可重构，减少了运营方的资金投入及运维成本，并给不同车辆的不同车主充电带来了便利，利于充电站经营方增加多元化收入。本发明还能使车辆蓄电池输出的电源到电网，从而满足了未来智慧城市万物互联的需求。
以上显示和描述了本发明的基本原理和主要特征及本发明的优点，对于本领域技术人员而言，显然本发明限于上述示范性实施例的细节，而且在不背离本发明的精神或基本特征的情况下，能够以其他的具体形式实现本发明。因此，无论从哪一点来看，均应将实施例看作是示范性的，而且是非限制性的，本发明的范围由所附权利要求而不是上述说明限定，因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。
此外，应当理解，虽然本说明书按照实施方式加以描述，但并非实施方式仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施方式。

Claims (1)

1.适用于大功率多电压多电源输出的可重构电动汽车充电桩，包括电动汽车充电系统本体、开关组合器、3脚模块化整流器、4脚模块化多电平逆变器、AFE/PWM整流器；其特征在于所述3脚模块化整流器、4脚模块化多电平逆变器采用三相交流电源供电；所述3脚模块化整流器的电源输入端和三相交流电源电性连接，3脚模块化整流器的电源输出端和4脚模块化多电平逆变器的电源输入端电性连接；所述AFE/PWM整流器具有多路电源输出端，4脚模块化多电平逆变器的电源输出端和AFE/PWM整流器的电源输入端电性连接；所述开关组合器具有多路电源输入端，开关组合器的多路电源输入端和AFE/PWM整流器的多路电源输出端分别电性连接，开关组合器具有多个分别独立的电源充电端口；所述电动汽车充电系统本体具有识别单元及控制单元应用软件，识别单元及控制单元应用软件能控制开关组合器的多个输出端口分别并联及单独输出电源；所述识别单元及控制单元能控制电动汽车充电系统本体为车辆充电，还能控制电动汽车的蓄电池逆向输出电源到电动汽车充电系统本体作为能量源为供电电网提供电能；电源侧的3脚模块化整流器，负载侧的4脚模块化多电平逆变器，能消除充电中任何的电源不平衡或电能质量问题将能量传输回配电网络，对供电电源造成影响，在负载不均的情况下，4脚模块化多电平变换器的第四条腿为中性线电流提供路径，以防止自身变压器过载；电源侧的3脚模块化整流器除了将交流电转换为直流电，还可用于系统功率因数校正，并通过调制直流输出电压来控制整个无线充电系统的输出功率等级；4脚模块化多电平逆变器的三个单相绕组的中频变压器用于构成三相变压器，其中三相变压器的初级绕组采用星形连接，次级绕组独立去耦以产生多个独立输出；识别单元及控制单元还能控制开关组合器的多个输出端口分别串联经充电端口输出电源；识别单元及控制单元控制开关组合器的多个输出端口分别或组合输出电源时，输出的电源电压及电流能改变。
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