WO2015067192A1 - 一种适用于igbt的电压源型换流单元的低感母排 - Google Patents

一种适用于igbt的电压源型换流单元的低感母排 Download PDF

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Publication number
WO2015067192A1
WO2015067192A1 PCT/CN2014/090458 CN2014090458W WO2015067192A1 WO 2015067192 A1 WO2015067192 A1 WO 2015067192A1 CN 2014090458 W CN2014090458 W CN 2014090458W WO 2015067192 A1 WO2015067192 A1 WO 2015067192A1
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Prior art keywords
busbar
low
igbt
voltage source
sensitivity
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Ceased
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PCT/CN2014/090458
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English (en)
French (fr)
Inventor
贺之渊
徐龙泽
屈海涛
李云鹏
栾洪洲
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State Grid Smart Grid Research Institute of SGCC
Dalian Power Supply Co State Grid Liaoning Electric Power Co Ltd
State Grid Corp of China SGCC
C Epri Electric Power Engineering Co Ltd
Original Assignee
State Grid Smart Grid Research Institute of SGCC
Dalian Power Supply Co State Grid Liaoning Electric Power Co Ltd
State Grid Corp of China SGCC
C Epri Electric Power Engineering Co Ltd
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Publication of WO2015067192A1 publication Critical patent/WO2015067192A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10W—GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10
    • H10W90/00—Package configurations
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/14—Mounting supporting structure in casing or on frame or rack
    • H05K7/1422—Printed circuit boards receptacles, e.g. stacked structures, electronic circuit modules or box like frames
    • H05K7/1427—Housings
    • H05K7/1432—Housings specially adapted for power drive units or power converters
    • H05K7/14329—Housings specially adapted for power drive units or power converters specially adapted for the configuration of power bus bars
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G5/00—Installations of bus-bars
    • H02G5/005—Laminated bus-bars
    • 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
    • H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections

Definitions

  • the utility model relates to a busbar, in particular to a low-sensitivity busbar suitable for a voltage source type converter unit of an IGBT.
  • the existing low-sensitivity busbar has a compact structure and a beautiful appearance, it can meet the requirements of a specific application environment to a certain extent, but there are some disadvantages, such as the insulation of the insulating layer after the plastic tube sheathed on the outer layer of the busbar is heated. The low sensitivity of the busbar is not good enough.
  • the insulating layer provided by the technical solution provided by the utility model is obtained by the spray coating technology, and the insulating material can be firmly adhered to the surface of the busbar, thereby achieving good insulation effect and spraying the insulating layer. It is thinner, which reduces the thickness of the busbar, makes the busbars closer, and has better low-inductance performance.
  • the low-sensitivity mother that shorts one end of the two IGBTs has a composite insulated busbar and a short-circuited busbar.
  • the existing shorting busbar is a combination of two busbars by bolts.
  • the technical solution provided by the present application designs a U-shaped busbar. This busbar is small and easier to install. This type of busbar is combined with an insulated composite busbar for better low-inductance performance.
  • the purpose of the utility model is to provide a busbar suitable for an IGBT voltage source type converter unit, which reduces the distributed inductance of the conductive loop.
  • a low-sensitivity busbar suitable for a voltage source type converter unit of an IGBT the low-sensing busbar includes a composite insulating busbar, and the low-sensing busbar includes The U-shaped shorting busbar is matched with the composite insulated busbar; the two poles of the U-shaped shorting busbar are respectively connected with the corresponding ends of one IGBT, so that two IGBTs are short-circuited.
  • the utility model provides a low-sensitivity busbar suitable for a voltage source type converter unit of an IGBT, and the composite insulated busbar comprises a right-angled bent section and a parallel section.
  • the utility model provides a low-sensitivity busbar suitable for a voltage source type converter unit of an IGBT, wherein the inner arc of the right-angle turning section has a radius of 6 mm or less.
  • Another preferred low voltage sense of a voltage source type converter unit suitable for IGBT provided by the present invention The busbar is connected to the capacitor terminal through a right angle bend provided at the other end.
  • the present invention provides a further low-sensitivity busbar suitable for the voltage source type converter unit of the IGBT, wherein the parallel section is provided with a spray-on insulating layer; the insulating layer has a thickness of 2 mm or less.
  • the present invention further provides a low-sensitivity busbar suitable for a voltage source type converter unit of an IGBT, wherein the right-angled curved portion has a radius of 6 mm.
  • Another preferred preferred embodiment of the present invention provides a low-sensitivity busbar for a voltage source type converter unit of an IGBT having a thickness of 2 mm.
  • the composite insulated busbar of the utility model is sprayed with a thinner insulating layer, so that the structure of the composite insulated busbar is firm;
  • the composite insulated busbar of the utility model is provided with an approximately right-angled bending structure, so that the composite insulated busbar and the capacitor terminal are closely adhered together, thereby further improving the low inductance of the low-sensitivity busbar circuit;
  • the U-shaped short-circuiting busbar realizes the short connection of the IGBT terminal; compared with the existing short-circuited busbar lap joint, the U-shaped short-connected busbar is convenient to install, and not only the process of bolting is eliminated, At the same time, the distributed inductance of the low-sensitivity busbar is reduced;
  • the spray-on insulation layer of the utility model has good insulation performance and aging resistance. Due to the thinness of the insulation layer, the two composite insulation busbars can be closely attached, thereby reducing the distributed inductance.
  • Figure 1 is a schematic view of the structure of the busbar of the present invention.
  • the low-sensitivity busbar of the present invention includes a composite insulated busbar and a U-shaped short-circuit busbar adapted to the composite insulated busbar; the U-shaped The two poles of the shorting busbar are respectively connected to the corresponding ends of one IGBT, so that two IGBTs are short-circuited.
  • the composite insulated busbar includes a right-angled curved section and a parallel section.
  • the inner curvature of the right-angled curved section is an arc having a radius of 6 mm or less.
  • the inner curvature in this embodiment is an arc having a radius equal to 6 mm.
  • the composite insulated anode and cathode busbars are respectively connected to the capacitor terminals through a turning section provided at one end thereof; the composite insulating anode and cathode busbars are respectively connected to the corresponding ends of the IGBT through the other end thereof; Insulating layer; using a spraying process, improving the stability of the insulating layer, and improving the insulation between the two composite insulating anode and cathode busbars; the thickness of the insulating layer is within 2 mm, and the thickness in the embodiment is 2mm.
  • the composite insulated anode and cathode busbars can withstand a high voltage of about 3 KV.
  • One end of the cathode anode of the composite insulating busbar is closely connected to the corresponding capacitor terminal through a turning section thereof.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Rectifiers (AREA)

Abstract

一种适用于IGBT的电压源型换流单元的低感母排，所述低感母排包括复合绝缘母排，以及同所述复合绝缘母排适配的U型短接母排。所述U型短接母排的两极分别与一个IGBT的对应端连接，实现两个IGBT短接。所述复合绝缘母排的两端分别与电容器端子和IGBT的对应端连接。所述U型短接母排安装更加方便，不仅少了螺栓连接的工序，也减小了母排的分布电感；与复合绝缘母排相结合更加减小了回路中的分布电感。

Description

一种适用于IGBT的电压源型换流单元的低感母排 技术领域：
本实用新型涉及一种母排，具体讲涉及一种适用于IGBT的电压源型换流单元的低感母排。
背景技术：
现有的低感母排虽然结构紧凑，外形美观，也在一定程度上能够满足特定的应用环境需求，但却存在一些不足，例如套在母排外层的塑料管受热后，绝缘层绝缘性能差，母排的低感性也不够好。
本实用新型提供的技术方案中的绝缘层是采用喷覆技术制得的，这样的绝缘材料可以牢固的附着在母排表面，既可起到良好的绝缘作用也可将喷覆绝缘层做得比较薄，从而降低母排的厚度，使母排贴的更近，具有更好的低感性能。
将两只IGBT的一端短接在一起的低感母排除了有复合绝缘母排，还有短接母排。现有的短接母排是将两只母排通过螺栓叠加在一起的。本申请提供的技术方案设计了一种U形母排。这种母排体积小，更便于安装。此种母排和绝缘复合母排配合使用，使低感性能更好。
实用新型内容：
本实用新型的目的是提供一种适用于IGBT电压源型换流单元的母排，该母排降低导电回路的分布电感。
为实现上述目的，本实用新型采用以下技术方案：一种适用于IGBT的电压源型换流单元的低感母排，所述低感母排包括复合绝缘母排，所述低感母排包括同所述复合绝缘母排适配的U型短接母排；所述U型短接母排的两极分别与一个IGBT的对应端连接，实现两个IGBT短接。
本实用新型提供的一种适用于IGBT的电压源型换流单元的低感母排，所述复合绝缘母排包括直角弯段和平行段。
本实用新型提供的一种适用于IGBT的电压源型换流单元的低感母排，所述直角转弯段的内弧度为半径6mm以下。
本实用新型提供的另一优选的一种适用于IGBT的电压源型换流单元的低感 母排，所述复合绝缘母排通过另一端其设置的直角弯段与电容器端子连接。
本实用新型提供的又一优选的一种适用于IGBT的电压源型换流单元的低感母排，所述平行段外部设有喷覆式绝缘层；所述绝缘层厚度为2mm以下。
本实用新型提供的再一优选的一种适用于IGBT的电压源型换流单元的低感母排，所述直角弯段的内弧度为半径6mm。
本实用新型提供的又一优选的一种适用于IGBT的电压源型换流单元的低感母排，所述绝缘层厚度为2mm。
和最接近的现有技术比，本实用新型提供技术方案具有以下优异效果：
1、本实用新型中的复合绝缘母排喷覆有绝缘层更薄、使得复合绝缘母排的结构牢固；
2、本实用新型中的复合绝缘母排设有的近似直角弯结构，使得复合绝缘母排与电容器端子紧密贴紧在一起，进一步改善低感母排回路的低感性；
3、本实用新型中U形短接母排，实现IGBT端子的短接；与现有的短接母排搭接相比，U形短接母排安装方便，不仅少了螺栓连接的工序，同时减小了低感母排的分布电感；
4、本实用新型复合绝缘母排和U形母排的结合使用，导致回路具有低分布电感；
5、本实用新型中的喷覆式绝缘层具有良好的绝缘性能和耐老化性能，由于绝缘层的很薄，两只复合绝缘母排可以贴得很近，从而降低分布电感。
附图说明
图1为本实用新型母排结构示意图。
具体实施方式
下面结合实施例对实用新型作进一步的详细说明。
实施例1：
如图1所示，本例的发实用新型低感母排，所述低感母排包括复合绝缘母排和同所述复合绝缘母排适配的U型短接母排；所述U型短接母排的两极分别与一个IGBT的对应端连接，实现两个IGBT短接。
所述复合绝缘母排包括直角弯段和平行段，所述直角弯段的内弧度为半径在6mm以内的弧，本实施例中的内弧度为半径等于6mm的弧。所述复合绝缘阴阳极母排分别通过其一端设置的转弯段与电容器端子连接；所述复合绝缘阴阳极母排分别通过其另一端与IGBT对应端连接；所述平行段外部设有喷覆式绝缘层；采用喷覆工艺，改善了绝缘层的稳固性，同时改善了两个复合绝缘阴阳极母排之间的绝缘性；所述绝缘层厚度为2mm之内，本实施例中的厚度为2mm。所述复合绝缘阴阳极母排之间可承受约3Kv的高电压。
所述复合绝缘母排的阴阳极的一端通过其转弯段与所述对应电容端子贴紧连接。
最后应该说明的是:以上实施例仅用以说明本实用新型的技术方案而非对其限制，尽管参照上述实施例对本实用新型进行了详细说明，所属领域的普通技术人员应当理解：依然可以对本实用新型的具体实施方式进行修改或者等同替换，而未脱离本实用新型精神和范围的任何修改或者等同替换，其均应涵盖在本权利要求范围当中。

Claims (7)

  1. 一种适用于IGBT的电压源型换流单元的低感母排，所述低感母排包括复合绝缘母排，其特征在于：所述低感母排包括同所述复合绝缘母排适配的U型短接母排；所述U型短接母排的两极分别与一个IGBT的对应端连接，实现两个IGBT短接。
  2. 如权利要求1所述的一种适用于IGBT的电压源型换流单元的低感母排，其特征在于：所述复合绝缘母排包括直角弯段和平行段。
  3. 如权利要求2所述的一种适用于IGBT的电压源型换流单元的低感母排，其特征在于：所述直角转弯段的弧度为半径6mm以下。
  4. 如权利要求3所述的一种适用于IGBT的电压源型换流单元的低感母排，其特征在于：所述复合绝缘母排通过另一端其设置的直角弯段与电容器端子连接。
  5. 如权利要求2所述的一种适用于IGBT的电压源型换流单元的低感母排，其特征在于：所述平行段外部设有喷覆式绝缘层；所述绝缘层厚度为2mm以下。
  6. 如权利要求3所述的一种适用于IGBT的电压源型换流单元的低感母排，其特征在于：所述直角弯段的内弧度为半径为6mm以下。
  7. 如权利要求5所述的一种适用于IGBT的电压源型换流单元的低感母排，其特征在于：所述绝缘层厚度为2mm。
PCT/CN2014/090458 2013-11-06 2014-11-06 一种适用于igbt的电压源型换流单元的低感母排 Ceased WO2015067192A1 (zh)

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CN203562212U (zh) * 2013-11-06 2014-04-23 国家电网公司 一种适用于igbt的电压源型换流单元的低感母排

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CN102170220A (zh) * 2011-03-10 2011-08-31 中国电力科学研究院 一种基于全控器件的电压源换流器的元件连接结构
JP5132175B2 (ja) * 2007-03-28 2013-01-30 三菱電機株式会社 電力変換装置
CN202856648U (zh) * 2012-08-23 2013-04-03 天津瑞能电气有限公司 一种光伏逆变模块
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CN1199274A (zh) * 1997-05-09 1998-11-18 Abb戴姆勒－奔驰运输(技术)有限公司 带有电力半导体开关母线系统的转换模块
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