JPH09205778A - Inverter device - Google Patents
Inverter deviceInfo
- Publication number
- JPH09205778A JPH09205778A JP8011505A JP1150596A JPH09205778A JP H09205778 A JPH09205778 A JP H09205778A JP 8011505 A JP8011505 A JP 8011505A JP 1150596 A JP1150596 A JP 1150596A JP H09205778 A JPH09205778 A JP H09205778A
- Authority
- JP
- Japan
- Prior art keywords
- electrolytic capacitor
- switching element
- metal plate
- pole
- inverter device
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Landscapes
- Inverter Devices (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明はインバータ装置に係
り、特に、配線インダクタンスを従来より減少させるの
に適したインバータ装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inverter device, and more particularly to an inverter device suitable for reducing a wiring inductance as compared with a conventional one.
【0002】[0002]
【従来の技術】従来、スイッチング素子と電解コンデン
サをブスバーで接続するインバータ装置では、ブスバー
の形状は平行平板であった。これは、ブスバー同士を平
板にすることで電流密度を低減させインダクタンスの減
少を図るものである。2. Description of the Related Art Conventionally, in an inverter device in which a switching element and an electrolytic capacitor are connected by a bus bar, the bus bar has a parallel plate shape. This is to reduce the current density and the inductance by making the bus bars flat.
【0003】[0003]
【発明が解決しようとする課題】従来技術では、大電流
を扱うインバータでは電解コンデンサ部の容積が巨大に
なるため電解コンデンサからスイッチング素子までの距
離が長くなりインダクタンスの増加につながる。現在の
要求としてインバータ装置のスナバレス化と、発生ノイ
ズの減少とがある。スナバレス化には、スイッチング素
子−電解コンデンサ間の配線インダクタンスをなくすこ
とが必要になるが、従来例では、スナバレス化に必要な
量だけ配線インダクタンスを減少させることができな
い。In the prior art, in an inverter handling a large current, the volume of the electrolytic capacitor portion becomes huge, so that the distance from the electrolytic capacitor to the switching element becomes long and the inductance increases. Present demands are to make the inverter device snubberless and to reduce the generated noise. In order to achieve snubberlessness, it is necessary to eliminate the wiring inductance between the switching element and the electrolytic capacitor, but in the conventional example, the wiring inductance cannot be reduced by the amount required for the snubberlessness.
【0004】本発明の目的は、スイッチング素子と電解
コンデンサを接続させる導体を筒状にすることによって
可能となるインダクタンスの減少による、発生ノイズの
減少,スナバレス化の実現およびそれによるインバータ
装置の小型化と部品点数の削減,スイッチング素子と電
解コンデンサの遠近によるインダクタンスのばらつき削
減などを図ることにある。It is an object of the present invention to reduce generated noise and realize snubberlessness by reducing the inductance made possible by making a conductor for connecting a switching element and an electrolytic capacitor into a cylindrical shape, and thereby miniaturizing an inverter device. And reducing the number of parts and reducing the variation in inductance due to the distance between the switching element and electrolytic capacitor.
【0005】[0005]
【課題を解決するための手段】上記目的を達成するた
め、本発明はスイッチング素子と電解コンデンサをブス
バーで接続するインバータ装置であって、一つは前記ブ
スバーの形状が筒状であることを特徴とする。または、
前記電解コンデンサは前記ブスバー内に配置することを
特徴とする。In order to achieve the above object, the present invention is an inverter device for connecting a switching element and an electrolytic capacitor with a bus bar, one of which is characterized in that the bus bar has a tubular shape. And Or
The electrolytic capacitor is arranged in the bus bar.
【0006】[0006]
【発明の実施の形態】次に、本発明によるインバータ装
置の実施例について図1から図3を参照しながら説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of an inverter device according to the present invention will be described with reference to FIGS.
【0007】図1に本実施例のインバータ装置の斜視図
を示す。但し、図面の一部は説明のためカットしてあ
る。111は一相分のスイッチング素子、112は電解
コンデンサである。113はスイッチング素子111の
第一極(例えば正極)と電解コンデンサ112の第一極
とを接続する少なくとも一枚で構成された第一極母線金
属板であり、その形状は筒状である。114はスイッチ
ング素子111の第二極(例えば負極)と電解コンデン
サ112の第二極とを接続する少なくとも一枚で構成さ
れた第二極母線金属板であり、第一極母線金属板113
と同様、その形状は筒状である。115は第一極母線金
属板113と第二極母線金属板114との間に挟まれ第
一極と第二極とを絶縁するための絶縁板である。尚、1
36のねじは第一極母線金属板113と電解コンデンサ
112およびスイッチング素子111を接続させるもので
あり、137のねじは第二極母線金属板114と電解コ
ンデンサ112およびスイッチング素子111を接続さ
せる。又、116はスイッチング素子111用のヒート
シングである。以上、第一極母線金属板113と第二極
母線金属板114の間に絶縁板115を挟み一対の筒状
金属板114を対向させる配線構造とすることで、特開
平3−285570 号公報のものよりもインダクタンスを減少
させ、また表面積をかせぐことにより放熱効果も増大す
る。FIG. 1 is a perspective view of the inverter device of this embodiment. However, some of the drawings are cut for the sake of explanation. 111 is a switching element for one phase, and 112 is an electrolytic capacitor. Reference numeral 113 denotes a first-pole busbar metal plate formed of at least one sheet that connects the first pole (for example, positive electrode) of the switching element 111 and the first pole of the electrolytic capacitor 112, and has a tubular shape. Reference numeral 114 denotes a second-pole busbar metal plate formed by at least one sheet that connects the second pole (for example, the negative electrode) of the switching element 111 and the second pole of the electrolytic capacitor 112, and the first-pole busbar metal plate 113.
Like, the shape is tubular. Reference numeral 115 is an insulating plate that is sandwiched between the first pole busbar metal plate 113 and the second pole busbar metal plate 114 to insulate the first pole and the second pole. In addition, 1
The screw 36 connects the first pole busbar metal plate 113 to the electrolytic capacitor 112 and the switching element 111, and the screw 137 connects the second pole busbar metal plate 114 to the electrolytic capacitor 112 and the switching element 111. Reference numeral 116 is a heating element for the switching element 111. As described above, the insulating structure 115 is sandwiched between the first pole busbar metal plate 113 and the second pole busbar metal plate 114 so that the pair of cylindrical metal plates 114 face each other. By reducing the inductance and increasing the surface area, the heat dissipation effect is also increased.
【0008】図2に本実施例のインバータ装置の斜視図
を示す。但し、図面の一部は説明のためカットしてあ
る。113はスイッチング素子111の第一極(例えば
正極)と電解コンデンサ112の第一極とを接続する少
なくとも一枚で構成された第一極母線金属板であり、特
に電解コンデンサを四方に囲む。114はスイッチング
素子111の第二極(例えば負極)と電解コンデンサ1
12の第二極とを接続する少なくとも一枚で構成された
第二極母線金属板であり、第一極母線金属板113と同
様、特に電解コンデンサを四方に囲む。115は第一極
母線金属板113と第二極母線金属板114との間に挟
まれ第一極と第二極とを絶縁するための絶縁板である。
尚、136のねじは第一極母線金属板113と電解コン
デンサ112およびスイッチング素子111を接続さ
せ、137のねじは第二極母線金属板114と電解コン
デンサ112およびスイッチング素子111を接続させ
るものである。又、127はインバータ装置用ヒートシ
ンク116とブスバーとの絶縁サポートである。以上、
第一極母線金属板と第二極母線金属板の間に絶縁板を挟
み一対の金属板を対向させる配線構造とすることで、特
開平3−285570 号公報のものよりもインダクタンスを減
少させ、また表面積をかせぐことにより放熱効果も増大
する。FIG. 2 shows a perspective view of the inverter device of this embodiment. However, some of the drawings are cut for the sake of explanation. Reference numeral 113 denotes a first-pole busbar metal plate composed of at least one sheet that connects the first pole (for example, positive electrode) of the switching element 111 and the first pole of the electrolytic capacitor 112, and particularly surrounds the electrolytic capacitor on all sides. 114 is the second pole (for example, negative pole) of the switching element 111 and the electrolytic capacitor 1.
It is a second pole busbar metal plate composed of at least one sheet for connecting the second pole of 12 and, like the first pole busbar metal plate 113, particularly surrounds the electrolytic capacitor on all sides. Reference numeral 115 is an insulating plate that is sandwiched between the first pole busbar metal plate 113 and the second pole busbar metal plate 114 to insulate the first pole and the second pole.
The screw 136 connects the first pole busbar metal plate 113 to the electrolytic capacitor 112 and the switching element 111, and the screw 137 connects the second pole busbar metal plate 114 to the electrolytic capacitor 112 and the switching element 111. . Further, 127 is an insulating support for the heat sink 116 for the inverter device and the bus bar. that's all,
By forming an insulating plate between the first pole busbar metal plate and the second pole busbar metal plate so that a pair of metal plates are opposed to each other, the inductance is reduced and the surface area is reduced as compared with the one disclosed in JP-A-3-285570. The heat dissipation effect is also increased by earning.
【0009】図3は本実施例のインバータ装置における
金属板と電解コンデンサの接続方法である。正極側金属
板131には電解コンデンサ134との接続用に大小二
種類の孔があいている。小さい孔は電解コンデンサ13
4の正極との接続用の孔であり、又、大きい孔は電解コ
ンデンサ134の負極端子との接触を避けるためのもの
である。同様に、負極側金属板132にも電解コンデン
サ134との接続用に大小二種類の孔があいている。小
さい孔は電解コンデンサ134の負極との接続用の孔で
あり、又、大きい孔は電解コンデンサ134の正極端子
との接触を避けるためである。負極側金属板132は絶
縁板と正極側金属板の上部より取り付けるので導電性ス
ペーサ135を使用し補強させる。尚、136は正極側
ねじで、137は負極側ねじである。FIG. 3 shows a method of connecting a metal plate and an electrolytic capacitor in the inverter device of this embodiment. The positive electrode side metal plate 131 has two kinds of holes, large and small, for connection with the electrolytic capacitor 134. Small holes are electrolytic capacitors 13
4 is a hole for connection with the positive electrode, and a large hole is for avoiding contact with the negative electrode terminal of the electrolytic capacitor 134. Similarly, the negative electrode side metal plate 132 has two kinds of holes, large and small, for connection with the electrolytic capacitor 134. The small holes are for connecting the negative electrode of the electrolytic capacitor 134, and the large holes are for avoiding contact with the positive electrode terminal of the electrolytic capacitor 134. Since the negative electrode side metal plate 132 is attached from above the insulating plate and the positive electrode side metal plate, a conductive spacer 135 is used for reinforcement. Incidentally, 136 is a positive-side screw and 137 is a negative-side screw.
【0010】以上より、ブズバーはその形状を筒状とす
ることで、互いの自己インダクタンスを相殺して0に近
づけることからインダクタンスの減少を可能にし、それ
に伴いインダクタンスによる発生ノイズの減少が可能に
なり又、スナバレス化を実現させ、インバータ装置の小
型化および部品点数の削減につながる。くわえて、スイ
ッチング素子と電解コンデンサの遠近によるインダクタ
ンスのばらつきが減少される。As described above, by making the buzz bar have a tubular shape, the self-inductances of the buzz bars are canceled out so that the buzz bar is close to 0. Therefore, the inductance can be reduced and the noise generated by the inductance can be reduced accordingly. Further, it realizes snubberlessness, which leads to downsizing of the inverter device and reduction of the number of parts. In addition, the variation in inductance due to the distance between the switching element and the electrolytic capacitor is reduced.
【0011】尚、本実施例中では通常の筒材を用いた
が、放熱能力向上のために孔のあいた材料を用いても良
い。In this embodiment, a normal tubular material is used, but a material with holes may be used to improve the heat radiation ability.
【0012】[0012]
【発明の効果】本発明によれば、平行導体はその形状を
筒状にすることで、インダクタンスの減少を可能にす
る。According to the present invention, the parallel conductor has a tubular shape, which enables reduction of inductance.
【図1】本発明によるインバータ装置の斜視図。FIG. 1 is a perspective view of an inverter device according to the present invention.
【図2】本発明によるインバータ装置の斜視図。FIG. 2 is a perspective view of an inverter device according to the present invention.
【図3】図1,図2における金属板と電解コンデンサの
接続構造の説明図。FIG. 3 is an explanatory diagram of a connection structure between the metal plate and the electrolytic capacitor in FIGS. 1 and 2.
111…スイッチング素子、112…電解コンデンサ、
113…負極側筒状金属板、114…正極側筒状金属
板、115…絶縁板、116…ヒートシンク、136…
正極側ねじ、137…負極側ねじ。111 ... Switching element, 112 ... Electrolytic capacitor,
Reference numeral 113 ... Negative electrode side tubular metal plate, 114 ... Positive electrode side tubular metal plate, 115 ... Insulating plate, 116 ... Heat sink, 136 ...
Positive screw, 137 ... Negative screw.
Claims (2)
バーで接続するインバータ装置において、前記ブスバー
の形状で筒状であることを特徴とするインバータ装置。1. An inverter device in which a switching element and an electrolytic capacitor are connected by a bus bar, wherein the bus bar has a tubular shape.
前記ブスバー内に配置されるインバータ装置。2. The inverter device according to claim 1, wherein the electrolytic capacitor is arranged in the bus bar.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8011505A JPH09205778A (en) | 1996-01-26 | 1996-01-26 | Inverter device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8011505A JPH09205778A (en) | 1996-01-26 | 1996-01-26 | Inverter device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09205778A true JPH09205778A (en) | 1997-08-05 |
Family
ID=11779887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8011505A Pending JPH09205778A (en) | 1996-01-26 | 1996-01-26 | Inverter device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09205778A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100485102B1 (en) * | 2002-09-17 | 2005-04-20 | 주식회사 플라스포 | Inverter stack having multi-layer bus plate |
JP2006101676A (en) * | 2004-09-30 | 2006-04-13 | Toshiba Elevator Co Ltd | Power converter |
JP2007143272A (en) * | 2005-11-17 | 2007-06-07 | Hitachi Ltd | Capacitor module, power conversion device, and on-vehicle electric machinery system |
JP2009111435A (en) * | 2009-02-19 | 2009-05-21 | Hitachi Ltd | Capacitor module, power converter, and on-vehicle electrical machinery system |
JP2011135769A (en) * | 2009-11-25 | 2011-07-07 | Daikin Industries Ltd | Power conversion apparatus |
JP2012109299A (en) * | 2010-11-15 | 2012-06-07 | Fuji Electric Co Ltd | Power conversion apparatus |
KR20190024041A (en) * | 2017-08-31 | 2019-03-08 | 현대엘리베이터주식회사 | DC-Link Busbar Plate with High Capacitance |
-
1996
- 1996-01-26 JP JP8011505A patent/JPH09205778A/en active Pending
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100485102B1 (en) * | 2002-09-17 | 2005-04-20 | 주식회사 플라스포 | Inverter stack having multi-layer bus plate |
JP2006101676A (en) * | 2004-09-30 | 2006-04-13 | Toshiba Elevator Co Ltd | Power converter |
JP4550538B2 (en) * | 2004-09-30 | 2010-09-22 | 東芝エレベータ株式会社 | Power converter |
JP2007143272A (en) * | 2005-11-17 | 2007-06-07 | Hitachi Ltd | Capacitor module, power conversion device, and on-vehicle electric machinery system |
US8243463B2 (en) | 2005-11-17 | 2012-08-14 | Hitachi, Ltd. | Capacitor module |
US8369100B2 (en) | 2005-11-17 | 2013-02-05 | Hitachi, Ltd. | Power converter |
US8411454B2 (en) | 2005-11-17 | 2013-04-02 | Hitachi, Ltd. | Power converter |
US8422244B2 (en) | 2005-11-17 | 2013-04-16 | Hitachi, Ltd. | Power converter |
JP2009111435A (en) * | 2009-02-19 | 2009-05-21 | Hitachi Ltd | Capacitor module, power converter, and on-vehicle electrical machinery system |
JP2011135769A (en) * | 2009-11-25 | 2011-07-07 | Daikin Industries Ltd | Power conversion apparatus |
JP2012109299A (en) * | 2010-11-15 | 2012-06-07 | Fuji Electric Co Ltd | Power conversion apparatus |
KR20190024041A (en) * | 2017-08-31 | 2019-03-08 | 현대엘리베이터주식회사 | DC-Link Busbar Plate with High Capacitance |
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