CN107910932A - 一种大功率直流充电模块的电气拓扑结构 - Google Patents

一种大功率直流充电模块的电气拓扑结构 Download PDF

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CN107910932A
CN107910932A CN201711074598.9A CN201711074598A CN107910932A CN 107910932 A CN107910932 A CN 107910932A CN 201711074598 A CN201711074598 A CN 201711074598A CN 107910932 A CN107910932 A CN 107910932A
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emc
filtering
full
control
power
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杨飞
杨宏远
白亚平
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Pavic Amperex Technology Ltd Nanjing
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Pavic Amperex Technology Ltd Nanjing
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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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
    • H02M1/4208—Arrangements for improving power factor of AC input
    • H02M1/4233—Arrangements for improving power factor of AC input using a bridge converter comprising active switches
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
    • 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
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
    • H02J2007/10—
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rectifiers (AREA)
  • Dc-Dc Converters (AREA)

Abstract

本发明公开一种大功率直流充电模块的电气拓扑结构，包括：核心单元水冷直流模块，所述水冷直流模块由交流输入、辅助单元、功率单元、控制及保护单元、直流输出构成，所述功率单元由滤波与EMC、三相功率因数校正、DC/DC全桥变换及滤波与EMC构成，所述交流输入分别连接滤波与EMC、辅助单元，所述滤波与EMC连接三相功率因数校正，所述三相功率因数校正连接DC/DC全桥变换，所述DC/DC全桥变换连接滤波与EMC，所述滤波与EMC连接直流输出、控制与保护单元，所述控制与保护单元连接三相功率因数校正及DC/DC全桥变换，所述辅助单元连接控制与保护单元。

Description

一种大功率直流充电模块的电气拓扑结构
技术领域
本发明涉及直流充电模块的电气拓扑结构，特别涉及一种大功率直流充电模块的电气拓扑结构。
背景技术
水冷直流模块是水冷直流充电机中的核心单元，要同时满足大容量、小体积、低成本、高效率、高功率因数的设计要求。通过分析现有充电机电路拓扑的特点和充电技术发展趋势，确定采用有源功率因数校正前级和LLC谐振全桥软开关变换器的两级变换电路的技术路线。分析典型的APFC电路和逆变软开关技术，提出可提高电源效率的移相全桥变换器结构。
发明内容
针对现有技术中的上述不足，本发明提供了一种大功率直流充电模块的电气拓扑结构，其结构简单，电磁干扰小，功率器件开关电压应力小，效率高。
为了达到上述发明目的，本发明采用的技术方案为：
一种大功率直流充电模块的电气拓扑结构，包括：核心单元水冷直流模块，所述水冷直流模块由交流输入、辅助单元、功率单元、控制及保护单元、直流输出构成，所述功率单元由滤波与EMC、三相功率因数校正、DC/DC全桥变换及滤波与EMC构成，所述交流输入分别连接滤波与EMC、辅助单元，所述滤波与EMC连接三相功率因数校正，所述三相功率因数校正连接DC/DC全桥变换，所述DC/DC全桥变换连接滤波与EMC，所述滤波与EMC连接直流输出、控制与保护单元，所述控制与保护单元连接三相功率因数校正及DC/DC全桥变换，所述辅助单元连接控制与保护单元。
进一步，所述辅助单元即辅助电源。
进一步，所述控制与保护单元即控制及保护。
进一步，确定采用有源功率因数校正前级和LLC谐振全桥软开关变换器的两级变换电路的技术路线。
进一步，APFC电路实现电压调整和功率因数矫正，移相全桥实现功率控制和电能高效转换。
本发明的有益效果为：
1．电压应力小，电磁干扰小，效率可达97.8%。
2．功率器件开关电压应力小，效率高。
3．通过提高工作频率，减小感性元件尺寸。
附图说明
图1为本发明高效水冷直流模块电路拓扑结构图；
图2为本发明大容量APFC电路拓扑电路图；
图3为本发明大容量DC/DC高频软开关变换器电路拓扑电路图。
具体实施方式
下面结合附图来进一步说明本发明的具体实施方式。其中相同的零部件用相同的附图标记表示。
需要说明的是，下面描述中使用的词语“前”、“后”、“左”、“右”、“上”和“下”指的是附图中的方向，词语“内”和“外”分别指的是朝向或远离特定部件几何中心的方向。
为了使本发明的内容更容易被清楚地理解，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。
如图1-3所示，一种大功率直流充电模块的电气拓扑结构，包括：核心单元水冷直流模块，所述水冷直流模块由交流输入、辅助单元、功率单元、控制及保护单元、直流输出构成，所述功率单元由滤波与EMC、三相功率因数校正、DC/DC全桥变换及滤波与EMC构成，所述交流输入分别连接滤波与EMC、辅助单元，所述滤波与EMC连接三相功率因数校正，所述三相功率因数校正连接DC/DC全桥变换，所述DC/DC全桥变换连接滤波与EMC，所述滤波与EMC连接直流输出、控制与保护单元，所述控制与保护单元连接三相功率因数校正及DC/DC全桥变换，所述辅助单元连接控制与保护单元。
所述辅助单元即辅助电源。
所述控制与保护单元即控制及保护。
确定采用有源功率因数校正前级和LLC谐振全桥软开关变换器的两级变换电路的技术路线。
APFC电路实现电压调整和功率因数矫正，移相全桥实现功率控制和电能高效转换。
该装置使用过程中，前级三相APFC电路采用图2所示的维也纳整流电流，为三电平结构，可选用600V的大容量MOSFET，3个IGBT SEMIKRON SKiM401TMLI12E4B 模块。MOSFET管和二极管的电压应力小，电磁干扰小，效率可达97.8%，由于开关频率的提高，也可以大幅减小PFC电感的值，有利于减小感性元件的尺寸和成本。DC/DC变换器采用图3所示的交错模式全桥LLC电路，原边功率管零电压开通，副边整流管零电流关断，实现功率器件软开关；为3电平结构，可选用600V元器件，2个IGBT SEMIKRON SKiM150GB12T4G 模块和6个DIODE二极管。
功率器件开关电压应力小，效率高；通过交错并联有效减小了输出电压纹波，提高了变换器功率，变换效率高达97.6%，输出滤波电路的参数减小，有利于降低成本。
以上所述仅为本发明专利的较佳实施例而已，并不用以限制本发明专利，凡在本发明专利的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明专利的保护范围之内。

Claims (5)

1.一种大功率直流充电模块的电气拓扑结构，其特征在于，包括：核心单元水冷直流模块，所述水冷直流模块由交流输入、辅助单元、功率单元、控制及保护单元、直流输出构成，所述功率单元由滤波与EMC、三相功率因数校正、DC/DC全桥变换及滤波与EMC构成，所述交流输入分别连接滤波与EMC、辅助单元，所述滤波与EMC连接三相功率因数校正，所述三相功率因数校正连接DC/DC全桥变换，所述DC/DC全桥变换连接滤波与EMC，所述滤波与EMC连接直流输出、控制与保护单元，所述控制与保护单元连接三相功率因数校正及DC/DC全桥变换，所述辅助单元连接控制与保护单元。
2.根据权利要求1所述的一种大功率直流充电模块的电气拓扑结构，其特征在于：所述辅助单元即辅助电源。
3.根据权利要求1所述的一种大功率直流充电模块的电气拓扑结构，其特征在于：所述控制与保护单元即控制及保护。
4.根据权利要求1所述的一种大功率直流充电模块的电气拓扑结构，其特征在于：确定采用有源功率因数校正前级和LLC谐振全桥软开关变换器的两级变换电路的技术路线。
5.根据权利要求1所述的一种大功率直流充电模块的电气拓扑结构，其特征在于：APFC电路实现电压调整和功率因数矫正，移相全桥实现功率控制和电能高效转换。
CN201711074598.9A 2017-11-06 2017-11-06 一种大功率直流充电模块的电气拓扑结构 Pending CN107910932A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111376759A (zh) * 2018-12-29 2020-07-07 比亚迪股份有限公司 车载充电机及车辆
CN112117753A (zh) * 2020-09-25 2020-12-22 江苏方天电力技术有限公司 一种基于直流母线的模块化数据中心系统

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111376759A (zh) * 2018-12-29 2020-07-07 比亚迪股份有限公司 车载充电机及车辆
CN112117753A (zh) * 2020-09-25 2020-12-22 江苏方天电力技术有限公司 一种基于直流母线的模块化数据中心系统

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Application publication date: 20180413