[go: up one dir, main page]

WO2020108412A1 - 功率模组以及电力电子设备 - Google Patents

功率模组以及电力电子设备 Download PDF

Info

Publication number
WO2020108412A1
WO2020108412A1 PCT/CN2019/120403 CN2019120403W WO2020108412A1 WO 2020108412 A1 WO2020108412 A1 WO 2020108412A1 CN 2019120403 W CN2019120403 W CN 2019120403W WO 2020108412 A1 WO2020108412 A1 WO 2020108412A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
bus
power module
phase power
phase
Prior art date
Application number
PCT/CN2019/120403
Other languages
English (en)
French (fr)
Inventor
周党生
吕一航
黄载尧
王琰
Original Assignee
深圳市禾望电气股份有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳市禾望电气股份有限公司 filed Critical 深圳市禾望电气股份有限公司
Publication of WO2020108412A1 publication Critical patent/WO2020108412A1/zh

Links

Images

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
    • H02M1/00Details of apparatus for conversion
    • H02M1/14Arrangements for reducing ripples from DC input or output
    • 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

Definitions

  • This application relates to the field of power electronics technology, in particular to a power module and power electronic equipment.
  • the power module directly determines the performance of the entire wind power converter.
  • the power level and volume of the power module directly determine the power and volume of the entire wind power converter.
  • the power module of the existing converter connects a plurality of power modules in parallel through a common DC bus 13, each power module includes a power unit 11, a plurality of DC bus capacitors 12, and a power unit
  • the AC bus 111 connected to 11 is a module DC bus 112 connected to the power unit 11, the DC bus capacitor 12 and the common DC bus 13.
  • the problem with the power modules of existing converters is that the distance between the power modules on the DC side is long and the ripple current is large.
  • the purpose of the present application is to provide a power module and a power electronic device to solve the problem that the power module of the existing converter has a long DC side distance between power modules and a large ripple current.
  • a power module including 3N single-phase power modules and a DC bus capacitor integrated structure; the 3N single-phase power modules and the DC bus capacitor integrated structure Fixed connection
  • the single-phase power module includes a power unit, a first DC bus and an AC bus connected to the power unit; the DC terminal of the power unit is electrically connected to the first DC bus; The AC end of the power unit is electrically connected to the AC bus discharge;
  • the DC bus capacitor integrated structure includes a capacitor integrated component connected to the 3N single-phase power modules, the capacitor integrated component includes a fixed structural member, M DC bus capacitors corresponding to each single-phase power module, and a second DC Busbars, the M DC bus capacitors are integrated in the fixed structural member; the first DC busbar and the second DC busbar are electrically connected; wherein N and M are both greater than or equal to 1.
  • a power electronic device comprising the above power module.
  • the power module and the power electronic equipment of the embodiment of the present application form a power module through an integrated structure of 3N single-phase power modules and a DC bus capacitor; the single-phase power module does not contain a DC bus capacitor, which reduces the volume and weight of the power module , Reduce maintenance cost and improve maintenance efficiency; DC bus capacitor integrated structure integrated design reduces the module ripple current.
  • Figure 1 is a schematic diagram of an existing power module
  • FIG. 2 is a schematic diagram of a power module according to an embodiment of this application.
  • Figure 3 is an exploded schematic view of Figure 2;
  • FIG. 4 is a schematic diagram of a single-phase power module in a power module according to an embodiment of the present application
  • FIG. 5 is a schematic diagram of another perspective of a single-phase power module in a power module according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of integration of a DC bus capacitor in a power module according to an embodiment of the present application
  • FIG. 7 is a schematic diagram of a power module formed by integrating a single-phase power module and a DC bus capacitor according to an embodiment of the present application;
  • FIG. 8 is a schematic diagram of another power module formed by integrating a single-phase power module and a DC bus capacitor according to an embodiment of the present application.
  • the first embodiment of the present application provides a power module.
  • the power module includes 3N single-phase power modules 21 and a DC bus capacitor integrated structure 22; the 3N single-phase power The module 21 and the DC bus capacitor integrated structure 22 are fixedly connected; where N is greater than or equal to 1.
  • the number of single-phase power modules 21 is not limited herein.
  • the 3N single-phase power modules 21 and the DC bus capacitor integrated structure 22 may be fixedly connected together by screws (not shown in the drawings), or may be connected together by other methods. Not limited.
  • the single-phase power module 21 includes a heat exchanger 212, a power unit 213, a first DC bus 211, an AC bus 215, and a housing 216;
  • the power unit 213 is fixedly installed on one or both sides of the heat exchanger 212; the DC terminal of the power unit 213 is electrically connected to the first DC bus 211; the AC of the power unit 213 The terminal is electrically connected to the AC bus bar 215; the first DC bus bar 211 and the AC bus bar 215 form an electrical interface for external connection.
  • the heat exchanger 212, the power unit 213, the first DC bus 211, and the AC bus 215 are disposed in the internal space of the housing 216.
  • the first DC busbar 211 includes positive and negative DC busbars, and an insulating film (not shown in the drawings) disposed between the positive and negative DC busbars.
  • the heat exchanger 212 is a plate-shaped water-cooled heat exchanger.
  • the power unit 213 works by including but not limited to IGBT, IGCT, IEGT and other power devices, and does not include a DC bus capacitor.
  • the DC terminal of the power unit 213 and the first DC bus bar 211 are fastened by screws 2131; the AC terminal of the power unit 213 and the AC bus The row 215 is fastened by screws 2132.
  • the single-phase power module further includes a driving board 214 connected to the power unit 213.
  • the driving board 214 may be independently installed on the heat exchanger 212; or the driving board 214 and the power unit 213 are integrated together.
  • the DC bus capacitor integrated structure 22 includes a fixed structural member 222, M DC bus capacitors 221 corresponding to each single-phase power module 21, and a second DC bus bar 223.
  • the second DC bus 223 is electrically connected to the first DC bus 211.
  • the M DC bus capacitors 221 are fixed on the fixed structural member 222, and the fixed structural member 222 is a sheet metal structural member.
  • the positive and negative poles of the M DC bus capacitors 221 are electrically connected through a second DC bus 223, which includes a positive and negative DC bus and an insulating film disposed between the positive and negative DC bus Not shown).
  • M is greater than or equal to 1, it should be noted that the number of M can be set according to N single-phase power modules 21. For example: as shown in FIGS. 2 and 6, 18 single-phase power modules 21 are provided with 18 DC bus capacitors 221.
  • the M DC bus capacitors 221 and the second DC bus bar 223 may be fixed by screws and nuts (not shown in the drawings). It should be noted that the number of DC bus capacitors 221 is not limited herein. Through the integrated design of the DC bus capacitor 221, the ripple current of the module can be reduced.
  • the 3N single-phase power modules 21 may be disposed on both sides of the DC bus capacitor integrated structure 22, and the number of single-phase power modules on each side is equal; where N It is an integer multiple of 2.
  • the single-phase power module 21 on the upper layer of the DC bus capacitor integrated structure 22 may constitute a rectifier module, and the single-phase power module 21 on the lower layer may constitute an inverter module (or vice versa), so that from top to bottom Forming a rectifier module, a DC bus module and an inverter module, the formed power path is shorter.
  • the DC bus capacitor integrated structure 22 and the single-phase power modules 21 on both sides can be integrated into an independent unit and installed in a power electronic device as a whole; or, the DC bus capacitor integrated structure 22 and the two
  • the single-phase power module 21 on the side forms three independent units installed in power electronic equipment, such as a rectifier unit, a DC bus unit, and an inverter unit.
  • the power module in the embodiment of the present application is composed of 3N single-phase power modules and a DC bus capacitor integrated structure; the single-phase power module does not contain a DC bus capacitor, which reduces the size and weight of the power module and reduces maintenance Cost and improve maintenance efficiency; DC bus capacitor integrated structure integrated design reduces the ripple current of the module.
  • a second embodiment of the present application provides a power electronic device.
  • the power electronic device includes the power module described in the first embodiment.
  • the power module can refer to the content described in the first embodiment, and will not be repeated here.
  • the power electronic device includes but is not limited to a photovoltaic inverter and a wind power converter.
  • the power electronic equipment of the embodiment of the present application forms a power module through the integrated structure of 3N single-phase power modules and a DC bus capacitor; the single-phase power module does not contain a DC bus capacitor, which reduces the volume and weight of the power module and reduces maintenance Cost and improve maintenance efficiency; DC bus capacitor integrated structure integrated design reduces the ripple current of the module.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

一种功率模组以及电力电子设备,所述功率模组包括3N个单相功率模块(21)、直流母线电容集成结构(22);3N个单相功率模块(21)和直流母线电容集成结构(22)固定连接;单相功率模块(21)包括功率单元(213)、第一直流母排(211)和交流母排(215);功率单元(213)的直流端与第一直流母排(211)电性连接,交流端与交流母排(215)电性连接;直流母线电容集成结构(22)包括电容集成组件,电容集成组件包括固定结构件(222)、M个直流母线电容(221)以及第二直流母排(223),M个直流母线电容(221)集成于固定结构件(222)中;第一直流母排(211)与第二直流母排(223)电性连接。通过3N个单相功率模块(21)和直流母线电容集成结构(22)构成功率模组;单相功率模块(21)内不含有直流母线电容,直流母线电容集成结构(22)集成设计,减少了模块的纹波电流。

Description

功率模组以及电力电子设备 技术领域
本申请涉及电力电子技术领域,尤其涉及一种功率模组以及电力电子设备。
背景技术
随着风力发电机组的单机容量向大功率化发展和海上风电日益成为发展趋势,风电行业对高集成的大功率变流器的需求也日益增加。功率模组作为风电变流器内部的核心器件,其性能的优劣直接决定整个风电变流器的性能,功率模组的功率等级和体积直接决定了整个风电变流器的功率和体积。
如图1所示,现有变流器的功率模组是通过共用直流母排13将多个功率模块并联连接,每一个功率模块均包括功率单元11、多个直流母线电容12、与功率单元11连接的交流母排111,与功率单元11、直流母线电容12以及共用直流母排13连接的模块直流母排112。
现有变流器的功率模组存在的问题是,功率模块之间的直流侧距离远,纹波电流大。
发明内容
有鉴于此,本申请的目的在于提供一种功率模组以及电力电子设备,以解决现有变流器的功率模组存在的功率模块之间的直流侧距离远,纹波电流大的问题。
本申请解决上述技术问题所采用的技术方案如下:
根据本申请的一个方面,提供的一种功率模组,所述功率模组包括3N个单相功率模块、直流母线电容集成结构;所述3N个单相功率模块和所述直流母线电容集成结构固定连接;
所述单相功率模块包括功率单元、与所述功率单元连接的第一直流母排和交流母排;所述功率单元的直流端与所述第一直流母排电性连接;所述功率单元的交流端与所述交流母排电性连接;
所述直流母线电容集成结构包括与所述3N个单相功率模块连接的电容集成组件,所述电容集成组件包括固定结构件、与各个单相功率模块对应的M 个直流母线电容以及第二直流母排,所述M个直流母线电容集成于所述固定结构件中;所述第一直流母排与所述第二直流母排电性连接;其中N、M均大于或等于1。
根据本申请的一个方面,提供的一种电力电子设备,所述电力电子设备包括上述的功率模组。
本申请实施例的功率模组以及电力电子设备,通过3N个单相功率模块和直流母线电容集成结构构成功率模组;单相功率模块内不含有直流母线电容,降低了功率模块的体积和重量,减少了维护的成本和提高维护效率;直流母线电容集成结构集成设计,减少了模块的纹波电流。
附图说明
图1为现有的功率模组示意图;
图2为本申请实施例的功率模组示意图;
图3为图2的分解示意图;
图4为本申请实施例的功率模组中单相功率模块示意图;
图5为本申请实施例的功率模组中单相功率模块另一视角的示意图;
图6为本申请实施例的功率模组中直流母线电容集成示意图;
图7为本申请实施例的单相功率模块和直流母线电容集成形成的功率模组示意图;
图8为本申请实施例的单相功率模块和直流母线电容集成形成的另一功率模组示意图。
本申请目的的实现、功能特点及优点将结合实施例,参照附图做进一步说明。
具体实施方式
为了使本申请所要解决的技术问题、技术方案及有益效果更加清楚、明白,以下结合附图和实施例,对本申请进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本申请,并不用于限定本申请。
第一实施例
如图2或图3所示,本申请第一实施例提供一种功率模组,所述功率模组包括3N个单相功率模块21、直流母线电容集成结构22;所述3N个单相功率模块21和所述直流母线电容集成结构22固定连接;其中N大于或等于1。
在本实施例中,单相功率模块21的数量在此不作限定。
在本实施例中,所述3N个单相功率模块21和所述直流母线电容集成结构22可以通过螺钉(附图未示出)固定连接在一起,也可以通过其他方式连接在一起,在此不作限定。
请参考图4所示,在本实施例中,所述单相功率模块21包括换热器212、功率单元213、第一直流母排211、交流母排215以及外壳216;
所述功率单元213固定安装在所述换热器212的一侧或两侧;所述功率单元213的直流端与所述第一直流母排211电性连接;所述功率单元213的交流端与所述交流母排215电性连接;所述第一直流母排211及所述交流母排215形成对外连接的电气接口。所述换热器212、所述功率单元213、所述第一直流母排211以及所述交流母排215设置在所述外壳216的内部空间。其中,所述第一直流母排211包括正负直流母排、以及设置于正负直流母排之间的绝缘膜(附图未示出)。
在本实施例中,所述换热器212为板状的水冷换热器。
在本实施例中,所述功率单元213通过包括但不限于IGBT、IGCT、IEGT等功率器件进行工作,不含直流母线电容。
请参考图5所示,在本实施例中,所述功率单元213的直流端与所述第一直流母排211通过螺钉2131紧固;所述功率单元213的交流端与所述交流母排215通过螺钉2132紧固。
请再参考图4所示,所述单相功率模块还包括与所述功率单元213连接的驱动板214。
在本实施例中,所述驱动板214可独立安装在所述换热器212上;或者所述驱动板214和所述功率单元213集成在一起。
请参考图6所示,在本实施例中,所述直流母线电容集成结构22包括固定结构件222、与各个单相功率模块21对应的M个直流母线电容221以及第 二直流母排223。其中,第二直流母排223与第一直流母排211电性连接。
M个直流母线电容221固定在所述固定结构件222上,所述固定结构件222为钣金结构件。M个直流母线电容221的正负极通过第二直流母排223电性连接,第二直流母排223包括正负直流母排、以及设置于正负直流母排之间的绝缘膜(附图未示出)。其中M大于或等于1,需要说明的是M的数量可以根据N个单相功率模块21来进行设置。例如:图2和图6所示,6个单相功率模块21设置了18个直流母线电容221。
在本实施例中,M个直流母线电容221和第二直流母排223之间可以通过螺钉和螺母(附图未示出)进行固定。需要说明的是,直流母线电容221的数量在此不作限定。通过直流母线电容221的集成设计,可减少模块的纹波电流。
请参考图7所示,在一示例中,所述3N个单相功率模块21可以设置于所述直流母线电容集成结构22的两侧,且每侧的单相功率模块的数量相等;其中N为2的整数倍。
以N=4为例,12个单相功率模块21对称地设置于所述直流母线电容集成结构22的两侧,每一侧都是6个单相功率模块21并且朝着相对的方向一一对应设置。
在该示例中,所述直流母线电容集成结构22上层的单相功率模块21可以构成一个整流模块,下层的单相功率模块21可以构成一个逆变模块(反之亦可),这样从上到下形成整流模块、直流母线模块以及逆变模块,形成的功率路径较短。
在该示例中,所述直流母线电容集成结构22和两侧的单相功率模块21可以集成为一个独立的单元整体地安装在电力电子设备中;或者,所述直流母线电容集成结构22和两侧的单相功率模块21形成三个独立的单元分别安装在电力电子设备中,例如:整流单元、直流母线单元以及逆变单元。
请参考图8所示,所述3N个单相功率模块21可以设置于所述直流母线电容集成结构22的一侧。以N=2为例,6个单相功率模块21全部设置于所述直流母线电容集成结构22的一侧。
本申请实施例的功率模组,通过3N个单相功率模块和直流母线电容集成 结构构成功率模组;单相功率模块内不含有直流母线电容,降低了功率模块的体积和重量,减少了维护的成本和提高维护效率;直流母线电容集成结构集成设计,减少了模块的纹波电流。
第二实施例
本申请第二实施例提供一种电力电子设备,所述电力电子设备包括第一实施例所述的功率模组。功率模组可参考第一实施例所述内容,在此不作赘述。
在本实施例中,所述电力电子设备包括但不限于光伏逆变器、风电变流器。
本申请实施例的电力电子设备,通过3N个单相功率模块和直流母线电容集成结构构成功率模组;单相功率模块内不含有直流母线电容,降低了功率模块的体积和重量,减少了维护的成本和提高维护效率;直流母线电容集成结构集成设计,减少了模块的纹波电流。
以上参照附图说明了本申请的优选实施例,并非因此局限本申请的权利范围。本领域技术人员不脱离本申请的范围和实质内所作的任何修改、等同替换和改进,均应在本申请的权利范围之内。

Claims (10)

  1. 一种功率模组,其特征在于,所述功率模组包括3N个单相功率模块、直流母线电容集成结构;所述3N个单相功率模块和所述直流母线电容集成结构固定连接;
    所述单相功率模块包括功率单元、与所述功率单元连接的第一直流母排和交流母排;所述功率单元的直流端与所述第一直流母排电性连接;所述功率单元的交流端与所述交流母排电性连接;
    所述直流母线电容集成结构包括与所述3N个单相功率模块连接的电容集成组件,所述电容集成组件包括固定结构件、与各个单相功率模块对应的M个直流母线电容以及第二直流母排,所述M个直流母线电容集成于所述固定结构件中;所述第一直流母排与所述第二直流母排电性连接;其中N、M均大于或等于1。
  2. 根据权利要求1所述的功率模组,其特征在于,所述单相功率模块还包括换热器;
    所述功率单元固定安装在所述换热器的一侧或两侧。
  3. 根据权利要求2所述的功率模组,其特征在于,所述单相功率模块还包括与所述功率单元连接的驱动板;
    所述驱动板安装在所述换热器上;或者,所述驱动板和所述功率单元集成在一起。
  4. 根据权利要求1-3任一所述的功率模组,其特征在于,所述功率单元包括IGBT、IGCT、IEGT中的任一种功率器件。
  5. 根据权利要求1-4任一所述的功率模组,其特征在于,所述第一直流母排电性和所述第二直流母排均包括正直流母排、负直流母排以及设置于所述正直流母排和所述负直流母排之间的绝缘膜。
  6. 根据权利要求1-5任一所述的功率模组,其特征在于,所述3N个单相功率模块设置于所述直流母线电容集成结构的两侧,且每侧的单相功率模块的数量相等;其中N为2的整数倍。
  7. 根据权利要求6所述的功率模组,其特征在于,所述直流母线电容集成结构和两侧的单相功率模块集成为一个独立的单元,以整体地安装在电力电子设备中;或者,所述直流母线电容集成结构和两侧的单相功率模块形成三个独立的单元,以分别地安装在电力电子设备中。
  8. 根据权利要求1-5任一所述的功率模组,其特征在于,所述3N个单相功率模块均设置于所述直流母线电容集成结构的一侧。
  9. 一种电力电子设备,其特征在于,所述电力电子设备包括权利要求1-8任一所述的功率模组。
  10. 根据权利要求9所述的电力电子设备,其特征在于,所述电力电子设备包括光伏逆变器或者风电变流器。
PCT/CN2019/120403 2018-11-28 2019-11-22 功率模组以及电力电子设备 WO2020108412A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201822016856.4 2018-11-28
CN201822016856.4U CN209488460U (zh) 2018-11-28 2018-11-28 功率模组以及电力电子设备

Publications (1)

Publication Number Publication Date
WO2020108412A1 true WO2020108412A1 (zh) 2020-06-04

Family

ID=68117630

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/120403 WO2020108412A1 (zh) 2018-11-28 2019-11-22 功率模组以及电力电子设备

Country Status (2)

Country Link
CN (1) CN209488460U (zh)
WO (1) WO2020108412A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209488460U (zh) * 2018-11-28 2019-10-11 深圳市长昊机电有限公司 功率模组以及电力电子设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949752A1 (fr) * 1998-04-06 1999-10-13 Alstom Transport S.A. Batterie de condensateurs, dispositif électronique de puissance comportant une telle batterie et ensemble électronique de puissance comportant un tel dispositif
CN102097941A (zh) * 2010-12-30 2011-06-15 冶金自动化研究设计院 一种双pwm集成门极换向晶闸管三电平功率柜
CN102857080A (zh) * 2012-09-21 2013-01-02 深圳市英威腾电气股份有限公司 防爆变频器机芯以及防爆变频器
CN208046437U (zh) * 2018-03-29 2018-11-02 深圳市长昊机电有限公司 一种变流器的功率单元及变流器
CN209488460U (zh) * 2018-11-28 2019-10-11 深圳市长昊机电有限公司 功率模组以及电力电子设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0949752A1 (fr) * 1998-04-06 1999-10-13 Alstom Transport S.A. Batterie de condensateurs, dispositif électronique de puissance comportant une telle batterie et ensemble électronique de puissance comportant un tel dispositif
CN102097941A (zh) * 2010-12-30 2011-06-15 冶金自动化研究设计院 一种双pwm集成门极换向晶闸管三电平功率柜
CN102857080A (zh) * 2012-09-21 2013-01-02 深圳市英威腾电气股份有限公司 防爆变频器机芯以及防爆变频器
CN208046437U (zh) * 2018-03-29 2018-11-02 深圳市长昊机电有限公司 一种变流器的功率单元及变流器
CN209488460U (zh) * 2018-11-28 2019-10-11 深圳市长昊机电有限公司 功率模组以及电力电子设备

Also Published As

Publication number Publication date
CN209488460U (zh) 2019-10-11

Similar Documents

Publication Publication Date Title
CN103401434B (zh) 一种大功率变流器功率单元
CN102025261B (zh) 风冷变流器功率模块系统
CN103986340A (zh) 电源变换器
CN201450442U (zh) 单桥臂水冷变流器装置
CN202663281U (zh) 一种大功率变流器功率模块结构
CN217721781U (zh) 变频器机构和电梯
CN211127600U (zh) 分体功率模块
CN202197209U (zh) 变频器层叠母排结构
WO2020108412A1 (zh) 功率模组以及电力电子设备
CN207638593U (zh) 一种四相开关磁阻电机专用书本型驱动器
CN204257409U (zh) 变频器的电容组件和变频器
CN101316077A (zh) 电力变换装置
CN202523941U (zh) 一种用于储能系统的叠层母排
CN209472561U (zh) 叠层铜排及三相大功率逆变器
CN211656040U (zh) 功率模组以及电力电子设备
CN201230431Y (zh) 水冷功率模块
JP5985606B2 (ja) コンデンサ担持バスバ及びそれを備える電力機器
CN111541381A (zh) 一种逆变器的四并联功率模块组
CN114496955A (zh) 电力变换装置
CN210867485U (zh) 单相功率模块、变流器及风力发电机组
CN207819393U (zh) 一种叠层低感绝缘输电母线结构
CN222803221U (zh) 一种变流器功率模块结构及变流器
CN209488437U (zh) 不含直流母线电容的单相功率模块以及电力电子设备
CN213547346U (zh) 分体式的储能变流器单元结构
CN216599377U (zh) 风电变流器及其功率模块

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19888389

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19888389

Country of ref document: EP

Kind code of ref document: A1