JPH1066342A - Power converter - Google Patents
Power converterInfo
- Publication number
- JPH1066342A JPH1066342A JP24129696A JP24129696A JPH1066342A JP H1066342 A JPH1066342 A JP H1066342A JP 24129696 A JP24129696 A JP 24129696A JP 24129696 A JP24129696 A JP 24129696A JP H1066342 A JPH1066342 A JP H1066342A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- tank
- semiconductor element
- oil passage
- radiator
- 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.)
- Granted
Links
Landscapes
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、油冷式のインバー
タ、ＤＣ−ＤＣコンバータ等の電力変換装置に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power conversion device such as an oil-cooled inverter and a DC-DC converter.
【０００２】[0002]
【従来の技術】インバータ、ＤＣ−ＤＣコンバータ等の
電力変換装置の電気的な構成として、主に変圧器本体と
半導体素子とがあり、変圧器本体は入力用変圧器本体と
出力用変圧器本体とからなる。これらは使用時に発熱を
伴うために、冷却する必要がある。また、高電圧で使用
する場合、電気的に絶縁する必要がある。図５は、従来
の電力変換装置を示す縦断面図である。同図において、
１はタンク、２はタンク１の側壁に設けた放熱器、３は
タンク１に充填された絶縁油、４ａは入力用変圧器本
体、４ｂは出力用変圧器本体、５は半導体素子、６１は
半導体素子５を着脱自在に取付けられる素子用放熱器で
ある。なお、制御装置及び電気的接続は省略している。2. Description of the Related Art As an electrical configuration of a power converter such as an inverter or a DC-DC converter, there are mainly a transformer main body and a semiconductor element, and the transformer main body is composed of an input transformer main body and an output transformer main body. Consists of Since these generate heat during use, they need to be cooled. When used at high voltage, it is necessary to electrically insulate. FIG. 5 is a longitudinal sectional view showing a conventional power converter. In the figure,
1 is a tank, 2 is a radiator provided on the side wall of the tank 1, 3 is insulating oil filled in the tank 1, 4a is an input transformer main body, 4b is an output transformer main body, 5 is a semiconductor element, 61 is a semiconductor element. An element radiator to which the semiconductor element 5 is detachably attached. The control device and the electrical connection are omitted.
【０００３】この従来例においては、入力用変圧器本体
４ａ，出力用変圧器本体４ｂ，半導体素子５及び素子用
放熱器６１を絶縁油３に侵漬させているので、入力用変
圧器本体４ａ，出力用変圧器本体４ｂ及び半導体素子５
は、絶縁油３の自然対流により冷却される。In this conventional example, the input transformer main body 4a, the output transformer main body 4b, the semiconductor element 5, and the element radiator 61 are immersed in the insulating oil 3, so that the input transformer main body 4a , Output transformer body 4b and semiconductor element 5
Is cooled by natural convection of the insulating oil 3.
【０００４】図６は、従来の電力変換装置の他の例を示
す縦断面図である。同図において、１はタンク、２は放
熱器、３は絶縁油、４ａは入力用変圧器本体、４ｂは出
力用変圧器本体、５半導体素子、６１は素子用放熱器で
ある。７はタンク１の側壁外部に取付けられ、半導体素
子５及び素子用放熱器６１をタンク１の外部で収容する
ための箱体のカバー、７ｃ，７ｄはそれぞれ箱体７の下
部及び上部に設けられた吸込口及び吐出口、８は箱体７
内の上部に設けられた冷却ファンである。なお、制御装
置及び電気的接続は省略している。FIG. 6 is a longitudinal sectional view showing another example of the conventional power converter. In the figure, 1 is a tank, 2 is a radiator, 3 is insulating oil, 4a is an input transformer main body, 4b is an output transformer main body, 5 semiconductor elements, and 61 is an element radiator. Numeral 7 is attached to the outside of the side wall of the tank 1, a box cover for accommodating the semiconductor element 5 and the element radiator 61 outside the tank 1, and 7c and 7d are provided at the lower and upper parts of the box 7, respectively. The suction port and the discharge port, and 8 are the box 7
It is a cooling fan provided in the upper part inside. The control device and the electrical connection are omitted.
【０００５】この従来例においては、入力用変圧器本体
４ａ及び出力用変圧器本体４ｂは絶縁油３の自然対流に
より冷却され、他方、半導体素子５は、冷却用ファン８
で吸引される冷却風が吸込口７ｃ、素子用放熱器６１、
吐出口７ｄを経て外部へ排出されることにより冷却され
る。In this conventional example, the input transformer body 4a and the output transformer body 4b are cooled by natural convection of the insulating oil 3, while the semiconductor element 5 is cooled by a cooling fan 8
The cooling air sucked by the suction port 7c, the element radiator 61,
It is cooled by being discharged to the outside through the discharge port 7d.
【０００６】[0006]
【発明が解決しようとする課題】図５に示した従来の油
冷式の電力変換装置では、半導体素子５が故障した場
合、または定期的な点検を行う場合、タンク１の上部に
ネジ止めして取付けた図示しないカバーを取り外し、半
導体素子５を油中から取り出さなければならないため
に、作業性が悪いという問題があった。In the conventional oil-cooled power converter shown in FIG. 5, when the semiconductor element 5 breaks down, or when periodic inspection is performed, a screw is screwed on the upper portion of the tank 1. Since the semiconductor element 5 must be taken out of the oil by removing the cover (not shown) attached by mounting, the workability is poor.
【０００７】そこで、従来の他の例として図６に示した
ように、変圧器本体に対して油冷式、半導体素子に対し
て強制風冷式の２つの方式を採用した電力変換装置が考
えられるが、それぞれが別々に構成され、かつ冷却機能
を有するようにしているために、冷却ファン８が必要と
なると共に、これを設置するための適当な大きさの空間
容積が必要となり、装置が大型化し、かつ高価となる問
題がある。さらに、冷却ファン８の寿命は入力用変圧器
本体４ａ及び出力用変圧器本体４ｂと比べて著しく小さ
く、通常３〜５年であるために、定期的に取り替える必
要があり、故障する前に点検しなければならないという
問題がある。特に、屋外に設置した場合、冷却ファンの
寿命がさらに短くなるという問題がある。Therefore, as another conventional example, as shown in FIG. 6, a power conversion device adopting two systems, an oil cooling system for a transformer main body and a forced air cooling system for a semiconductor device, is considered. However, since each of them is configured separately and has a cooling function, a cooling fan 8 is required, and a space volume of an appropriate size for installing the cooling fan 8 is required. There is a problem that it becomes large and expensive. Further, the life of the cooling fan 8 is significantly shorter than that of the input transformer main body 4a and the output transformer main body 4b, and is usually 3 to 5 years. There is a problem that must be done. In particular, when installed outdoors, there is a problem that the life of the cooling fan is further shortened.
【０００８】本発明の目的は、半導体素子の故障時また
は点検時の繁雑な作業をなくし、しかも冷却ファンを用
いなくても半導体素子の冷却を低下させることのない電
力変換装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a power conversion device which eliminates troublesome work at the time of failure or inspection of a semiconductor element, and which does not reduce cooling of the semiconductor element without using a cooling fan. is there.
【０００９】[0009]
【課題を解決するための手段】本発明は、入力用変圧器
本体と出力用変圧器本体と半導体素子とを具備し、半導
体素子を素子用放熱器に装着した電力変換装置に係わる
ものである。SUMMARY OF THE INVENTION The present invention relates to a power converter having an input transformer main body, an output transformer main body, and a semiconductor element, wherein the semiconductor element is mounted on a radiator for the element. .
【００１０】請求項１に記載の発明は、入力用変圧器本
体と出力用変圧器本体とが絶縁油を充填したタンクに収
容され、素子用放熱器をタンク外に配置すると共に、素
子用放熱器に油道を設け、タンクの上部及び下部と油道
とをそれぞれ接続する上部通油管及び下部通油管を配設
したものである。According to the first aspect of the present invention, the input transformer main body and the output transformer main body are accommodated in a tank filled with insulating oil, the element radiator is arranged outside the tank, and the element heat radiator is disposed. An oil passage is provided in the vessel, and an upper oil passage and a lower oil passage connecting the upper and lower portions of the tank and the oil passage are arranged.
【００１１】これにより、半導体素子が素子用放熱器に
装着されたままで、共に気中に露出した状態となり、ま
た素子用放熱器の油道をタンク内の油が流通することに
なる。As a result, the semiconductor element remains exposed to the air while being mounted on the element radiator, and the oil in the tank flows through the oil passage of the element radiator.
【００１２】[0012]
【発明の実施の形態】図１は本発明に係る電力変換装置
の一実施形態を示す縦断面図であり、素子用放熱器を１
つのタンク内の油を用いて冷却する例を示している。同
図において、１はタンク、２は放熱器、３は絶縁油、４
ａは入力用変圧器本体、４ｂは出力用変圧器本体、５は
半導体素子で、従来例を示す図５及び図６と同様であ
る。６は例えば内部に油道６ｃを形成した素子用放熱
器、１０は上部通油管、１１は下部通油管、１４はタン
ク１の側壁外部に取付けられ、半導体素子５を装着した
素子用放熱器６を収容する箱体状のカバーであり、図示
しない扉を有している。この扉は、半導体素子５の故障
時または点検時に開閉される。FIG. 1 is a longitudinal sectional view showing an embodiment of a power converter according to the present invention.
An example of cooling using oil in one tank is shown. In the figure, 1 is a tank, 2 is a radiator, 3 is insulating oil, 4
a is an input transformer main body, 4b is an output transformer main body, and 5 is a semiconductor element, which is the same as FIGS. 5 and 6 showing a conventional example. 6 is an element radiator having an oil passage 6c formed therein, 10 is an upper oil passage, 11 is a lower oil passage, and 14 is an element radiator 6 mounted outside the side wall of the tank 1 and having the semiconductor element 5 mounted thereon. And a door (not shown). This door is opened and closed when the semiconductor element 5 fails or is inspected.
【００１３】本実施形態は、カバー１４内のタンク１の
側壁の上部及び下部にそれぞれ穴１c1，１c2を設けて、
この穴にそれぞれ上部通油管１０及び下部通油管１１を
溶接等により取付ける。上部通油管１０及び下部通油管
１１の他端には、図示しないフランジ取付けられてお
り、上部通油管１０及び下部通油管１１は、それぞれ素
子用放熱器６の油道出口６c1及び油道入口６c2にフラン
ジ結合され、タンク１と素子用放熱器６とが連結され
る。In the present embodiment, holes 1c1 and 1c2 are provided in the upper and lower portions of the side wall of the tank 1 in the cover 14, respectively.
An upper oil pipe 10 and a lower oil pipe 11 are attached to the holes by welding or the like. A flange (not shown) is attached to the other end of the upper oil passage pipe 10 and the lower oil passage pipe 11, and the upper oil passage pipe 10 and the lower oil passage pipe 11 are respectively connected to an oil passage outlet 6c1 and an oil passage inlet 6c2 of the element radiator 6. And the tank 1 and the element radiator 6 are connected.
【００１４】図２は本発明に適用する素子用放熱器の概
略構成図である。素子用放熱器６はアルミまたは銅等か
らなり、半導体素子５を搭載して吸熱する吸熱部６ｅが
形成され、また放熱部となる油道６ｃが例えば上下方向
に貫通するように形成されており、油道６ｃは油道出口
６c1及び油道入口６c2を有している。FIG. 2 is a schematic structural view of an element radiator applied to the present invention. The element radiator 6 is made of aluminum, copper, or the like, is formed with a heat absorbing portion 6e on which the semiconductor element 5 is mounted and absorbs heat, and is formed so that an oil path 6c serving as a heat radiating portion penetrates, for example, in the vertical direction. The oil passage 6c has an oil passage outlet 6c1 and an oil passage inlet 6c2.
【００１５】本実施形態においては、半導体素子５が素
子用放熱器６に装着されたままで、共に気中に露出した
状態となるので、半導体素子５の故障時または点検時の
繁雑な作業が不要となり、半導体素子５を着脱する作業
のみとなる。また、半導体素子５で発生した熱は、素子
用放熱器６を介して油道６内の油に伝わり、暖められた
油は油道出口６c1を出て上部通油管１０内を上昇し、タ
ンク１の上部に設けた穴１c1を通してタンク１に流れ込
む。半導体素子５で暖められた油は、入力用変圧器本体
４ａ及び出力用変圧器本体４ｂで発生した熱により暖め
られた油と共に放熱器２で冷却されながら放熱器２内を
下方へ移動し、タンク１の下部からタンク１内に流れ込
む。冷却された油の一部は、タンク１の下部に設けた穴
１c2を出て、下部通油管１１内を上昇し、油道入口６c2
から油道６に流れ込む。このように油が自然対流するの
で、半導体素子５は従来と同様に冷却される。In this embodiment, since the semiconductor element 5 remains exposed to the air with the semiconductor element 5 mounted on the element radiator 6, troublesome work at the time of failure or inspection of the semiconductor element 5 is unnecessary. Thus, only the operation of attaching and detaching the semiconductor element 5 is performed. Further, the heat generated in the semiconductor element 5 is transmitted to the oil in the oil passage 6 via the radiator 6 for the element, and the warmed oil exits from the oil passage outlet 6c1 and rises in the upper oil passage pipe 10 to be in the tank. It flows into the tank 1 through a hole 1c1 provided in the upper part of the tank 1. The oil warmed by the semiconductor element 5 moves downward in the radiator 2 while being cooled by the radiator 2 together with the oil warmed by the heat generated in the input transformer main body 4a and the output transformer main body 4b, It flows into the tank 1 from the lower part of the tank 1. Part of the cooled oil exits through a hole 1c2 provided in the lower part of the tank 1 and rises in the lower oil passage pipe 11, and the oil passage inlet 6c2
Flows into the oil passage 6 from Since the oil naturally flows, the semiconductor element 5 is cooled in the same manner as in the conventional case.
【００１６】図３は本発明に係る電力変換装置の他の実
施形態を示す縦断面図であり、素子用放熱器を２つのタ
ンク内の油を用いて冷却する例を示している。同図にお
いて、２は放熱器、３は絶縁油、５は半導体素子で、従
来例を示す図５及び図６と同様である。１ａは第１のタ
ンク、１ｂは第２のタンク、４ａは第１のタンク１ａに
収容された入力用変圧器本体、４ｂは第２のタンク１ｂ
に収容された出力用変圧器本体、６は例えば内部に油道
６ｃ，６ｄを形成した素子用放熱器、１０，１２は上部
通油管、１１，１３は下部通油管、１４は両タンク１
ａ，１ｂ間の側壁外部に取付けられ、半導体素子５を装
着した素子用放熱器６を収容する箱体状の共通カバーで
あり、図示しない扉を有している。この扉は、半導体素
子５の故障時または点検時に開閉される。FIG. 3 is a longitudinal sectional view showing another embodiment of the power converter according to the present invention, and shows an example in which the element radiator is cooled using oil in two tanks. In the figure, 2 is a radiator, 3 is an insulating oil, and 5 is a semiconductor element, which is the same as FIGS. 5 and 6 showing the conventional example. 1a is a first tank, 1b is a second tank, 4a is an input transformer main body accommodated in the first tank 1a, 4b is a second tank 1b
, An element radiator having oil passages 6c, 6d formed therein, 10, 12 for upper oil pipes, 11, 13 for lower oil pipes, 14 for both tanks 1
It is a box-shaped common cover that is attached to the outside of the side wall between a and 1b and houses the element radiator 6 to which the semiconductor element 5 is mounted, and has a door (not shown). This door is opened and closed when the semiconductor element 5 fails or is inspected.
【００１７】本実施形態は、カバー１４内の第１のタン
ク１ａの側壁の上部及び下部にそれぞれ穴１c1，１c2を
設けて、この穴にそれぞれ上部通油管１０及び下部通油
管１１を溶接等により取付ける。上部通油管１０及び下
部通油管１１の他端には、図示しないフランジ取付けら
れており、上部通油管１０及び下部通油管１１は、それ
ぞれ素子用放熱器６の油道出口６c1及び油道入口６c2に
フランジ結合され、第１のタンク１ａと素子用放熱器６
とが連結される。In the present embodiment, holes 1c1 and 1c2 are provided in the upper and lower portions of the side wall of the first tank 1a in the cover 14, respectively, and the upper oil passage pipe 10 and the lower oil passage pipe 11 are respectively welded to these holes by welding or the like. Attach. A flange (not shown) is attached to the other end of the upper oil passage pipe 10 and the lower oil passage pipe 11, and the upper oil passage pipe 10 and the lower oil passage pipe 11 are respectively connected to an oil passage outlet 6c1 and an oil passage inlet 6c2 of the element radiator 6. To the first tank 1a and the element radiator 6
Are linked.
【００１８】また同様に、カバー１４内の第２のタンク
１ｂの側壁の上部及び下部にそれぞれ穴１d1，１d2を設
けて、この穴にそれぞれ上部通油管１２及び下部通油管
１３を溶接等により取付ける。上部通油管１２及び下部
通油管１３の他端には、図示しないフランジ取付けられ
ており、上部通油管１２及び下部通油管１３は、それぞ
れ素子用放熱器６の油道出口６d1及び油道入口６d2にフ
ランジ結合され、第２のタンク１ｂと素子用放熱器６と
が連結される。Similarly, holes 1d1 and 1d2 are provided in the upper and lower portions of the side wall of the second tank 1b in the cover 14, respectively, and the upper oil pipe 12 and the lower oil pipe 13 are respectively attached to these holes by welding or the like. . A flange (not shown) is attached to the other end of the upper oil passage pipe 12 and the lower oil passage pipe 13, and the upper oil passage pipe 12 and the lower oil passage pipe 13 are respectively connected to an oil passage outlet 6d1 and an oil passage entrance 6d2 of the element radiator 6. And the second tank 1b and the element radiator 6 are connected to each other.
【００１９】図４は本発明に適用する他の素子用放熱器
の概略構成図である。半導体素子５を搭載して吸熱する
吸熱部６ｅが形成され、また放熱部となる油道６ｃ，６
ｄが例えば上下方向に貫通するように形成されており、
油道６ｃは油道出口６c1及び油道入口６c2を、油道６ｄ
は油道出口６d1及び油道入口６d2を有している。FIG. 4 is a schematic structural view of another element radiator applied to the present invention. A heat absorbing portion 6e for mounting the semiconductor element 5 and absorbing heat is formed, and oil passages 6c and 6 serving as heat radiating portions are formed.
d is formed to penetrate, for example, in the vertical direction,
The oil passage 6c connects the oil passage outlet 6c1 and the oil passage entrance 6c2 to the oil passage 6d.
Has an oil passage outlet 6d1 and an oil passage entrance 6d2.
【００２０】本実施形態においては、半導体素子５で発
生した熱は、素子用放熱器６を介して油道６ｃ内の油に
伝わり、暖められた油は油道出口６c1を出て上部通油管
１０内を上昇し、タンク１ａの上部に設けた穴１c1を通
してタンク１に流れ込む。半導体素子５で暖められた油
は、入力用変圧器本体４ａで発生した熱により暖められ
た油と共に放熱器２で冷却されながら放熱器２内を下方
へ移動し、タンク１ａの下部からタンク１ａ内に流れ込
む。冷却された油の一部は、タンク１ａの下部に設けた
穴１c2を出て、下部通油管１１内を上昇し、油道入口６
c2から油道６ｃに流れ込む。このように油が自然対流す
るので、半導体素子５は冷却される。In this embodiment, the heat generated in the semiconductor element 5 is transmitted to the oil in the oil passage 6c via the radiator 6 for the element, and the warmed oil passes through the oil passage outlet 6c1 and passes through the upper oil passage pipe. 10 rises and flows into the tank 1 through a hole 1c1 provided in the upper part of the tank 1a. The oil warmed by the semiconductor element 5 moves downward in the radiator 2 while being cooled by the radiator 2 together with the oil warmed by the heat generated in the input transformer main body 4a, and moves from the lower part of the tank 1a to the tank 1a. Flows into. Part of the cooled oil exits through a hole 1c2 provided in the lower part of the tank 1a and rises in the lower oil passage pipe 11, and the oil passage inlet 6
The oil flows from c2 into the oil passage 6c. Since the oil naturally flows, the semiconductor element 5 is cooled.
【００２１】また同様に、半導体素子５で発生した熱
は、素子用放熱器６を介して油道６ｄ内の油に伝わり、
暖められた油は油道出口６d1を出て上部通油管１２内を
上昇し、タンク１ｂの上部に設けた穴１d1を通してタン
ク１ｂに流れ込む。半導体素子５で暖められた油は、出
力用変圧器本体４ｂで発生した熱により暖められた油と
共に放熱器２で冷却されながら放熱器２内を下方へ移動
し、タンク１ｂの下部からタンク１ｂ内に流れ込む。冷
却された油の一部は、タンク１ｂの下部に設けた穴１d2
を出て、下部通油管１３内を上昇し、油道入口６d2から
油道６ｄに流れ込む。Similarly, the heat generated in the semiconductor element 5 is transmitted to the oil in the oil path 6d through the element radiator 6, and
The warmed oil exits the oil passage outlet 6d1 and rises in the upper oil passage pipe 12, and flows into the tank 1b through the hole 1d1 provided in the upper part of the tank 1b. The oil warmed by the semiconductor element 5 moves downward in the radiator 2 while being cooled by the radiator 2 together with the oil warmed by the heat generated in the output transformer main body 4b, and moves from the lower part of the tank 1b to the tank 1b. Flows into. A part of the cooled oil is supplied to the hole 1d2 provided in the lower part of the tank 1b.
And rises in the lower oil passage pipe 13 and flows into the oil passage 6d from the oil passage inlet 6d2.
【００２２】上記の素子用放熱器６は両タンク１ａ，１
ｂ間に設けたが、両タンクを近接させて、両タンクの側
壁に亘るようにカバー１４を取付け、このカバー内に素
子用放熱器を設けてもよく、この場合、小形化がより図
られる。The above-mentioned element radiator 6 is provided with both tanks 1a, 1
Although provided between the tanks b, the cover 14 may be attached to the two tanks so as to be close to each other and to cover the side walls of the tanks, and the element radiator may be provided in the cover. In this case, the size can be further reduced. .
【００２３】上記の各実施形態で用いる素子用放熱器６
は、外部にフィンを設けてもよく、油道６ｃ，６ｄにフ
ィンを設けてもよく、また油道６ｃをハニカム状にして
もよい。さらに、内部に油道を形成する代わりに、アル
ミまたは銅等からなる通油管状の油道を外部に取付けて
もよい。また、油道の数を多くしてもよく、この場合、
一対の上部通油管及び下部通油管の数は、油道の数に対
応させる。このようにすると、冷却効率を高めることが
できる。また、放熱器２の構造、寸法、数は、冷却程度
に応じて最適に設計されている。さらに、従来例で用い
た冷却ファンよりも寿命が遥かに長い送油ポンプを用い
て強制冷却してもよい。Element radiator 6 used in each of the above embodiments
The fins may be provided on the outside, the fins may be provided on the oil passages 6c and 6d, and the oil passage 6c may be formed in a honeycomb shape. Further, instead of forming an oil passage inside, an oil passage tubular oil passage made of aluminum or copper may be attached to the outside. Also, the number of oil passages may be increased, in which case,
The number of a pair of upper oil passage pipes and lower oil passage pipes corresponds to the number of oil passages. By doing so, the cooling efficiency can be increased. The structure, dimensions and number of the radiators 2 are optimally designed according to the degree of cooling. Further, forced cooling may be performed using an oil pump having a life much longer than the cooling fan used in the conventional example.
【００２４】上記の各実施形態で用いる半導体素子５
は、ＩＧＢＴと称されるもので、その内部と金属製の放
熱部とは電気的に絶縁されるように、モジュール化され
ている。この半導体素子５を、タンク１または１ａ，１
ｂと導通状態にある素子用放熱器６の吸熱部６ｅに直接
取付けても、何ら問題は生じない。Semiconductor device 5 used in each of the above embodiments
Is called an IGBT, and is modularized so that the inside thereof and the metal heat radiating portion are electrically insulated. This semiconductor element 5 is connected to the tank 1 or 1a, 1
Even if it is directly attached to the heat absorbing portion 6e of the element radiator 6 which is in a conductive state with b, no problem occurs.
【００２５】上記の半導体素子５は、ＩＧＢＴに限定さ
れるものではなく、内部と電気的に絶縁されていない素
子を用いてもよく、この場合は、上部通油管及び下部通
油管１０，１１，１２，１３を絶縁性のものにすればよ
い。The semiconductor element 5 is not limited to the IGBT, but may be an element that is not electrically insulated from the inside. In this case, the upper oil pipe and the lower oil pipes 10, 11,. What is necessary is just to make 12 and 13 an insulating thing.
【００２６】[0026]
【発明の効果】以上のように、本発明によれば、半導体
素子の故障時または点検時の繁雑な作業が不要となり、
また装置の大型化が防止でき、かつ高価となることが防
止できる。さらに、半導体素子の冷却を低下させること
なく、冷却ファンを不要にすることができる。また、冷
却ファンを用いないので、冷却ファンの点検作業が不要
となり、しかも屋外に設置しても長寿命化が図られる。As described above, according to the present invention, troublesome work at the time of failure or inspection of a semiconductor element becomes unnecessary.
In addition, it is possible to prevent the apparatus from becoming large and to prevent the apparatus from becoming expensive. Further, the cooling fan can be eliminated without lowering the cooling of the semiconductor element. In addition, since no cooling fan is used, inspection work of the cooling fan is not required, and the service life can be extended even when the cooling fan is installed outdoors.
【図１】本発明に係る電力変換装置の一実施形態を示す
縦断面図である。FIG. 1 is a longitudinal sectional view showing one embodiment of a power converter according to the present invention.
【図２】本発明に適用する素子用放熱器の概略構成図で
ある。FIG. 2 is a schematic configuration diagram of an element radiator applied to the present invention.
【図３】本発明に係る電力変換装置の他の実施形態を示
す縦断面図である。FIG. 3 is a longitudinal sectional view showing another embodiment of the power converter according to the present invention.
【図４】本発明に適用する他の素子用放熱器の概略構成
図である。FIG. 4 is a schematic configuration diagram of another element radiator applied to the present invention.
【図５】従来の電力変換装置を示す縦断面図である。FIG. 5 is a longitudinal sectional view showing a conventional power converter.
【図６】従来の電力変換装置の他の例を示す縦断面図で
ある。FIG. 6 is a longitudinal sectional view showing another example of the conventional power converter.
１，１ａ，１ｂ タンク ３ 絶縁油 ４ａ 入力用変圧器本体 ４ｂ 出力用変圧器本体 ５ 半導体素子 ６ 素子用放熱器 ６ｃ，６ｄ 油道 １０，１２ 上部通油管 １１，１３ 下部通油管 1, 1a, 1b Tank 3 Insulating oil 4a Input transformer main body 4b Output transformer main body 5 Semiconductor element 6 Element radiator 6c, 6d Oil path 10, 12 Upper oil pipe 11, 13 Lower oil pipe
Claims (1)
半導体素子とを具備し、前記半導体素子を素子用放熱器
に装着した電力変換装置において、 前記入力用変圧器本体と出力用変圧器本体とが絶縁油を
充填したタンクに収容され、 前記素子用放熱器を前記タンク外に配置すると共に、前
記素子用放熱器に油道を設け、 前記タンクの上部及び下部と前記油道とをそれぞれ接続
する上部通油管及び下部通油管を配設した電力変換装
置。1. A power converter comprising an input transformer main body, an output transformer main body, and a semiconductor element, wherein the semiconductor element is mounted on an element radiator, wherein the input transformer main body and the output transformer are provided. The container main body is accommodated in a tank filled with insulating oil, the element radiator is arranged outside the tank, and an oil path is provided in the element radiator, and the upper and lower parts of the tank and the oil path are provided. A power conversion device provided with an upper oil passage pipe and a lower oil passage pipe that respectively connect the oil passage pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24129696A JP3735165B2 (en) | 1996-08-23 | 1996-08-23 | Power converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24129696A JP3735165B2 (en) | 1996-08-23 | 1996-08-23 | Power converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1066342A true JPH1066342A (en) | 1998-03-06 |
| JP3735165B2 JP3735165B2 (en) | 2006-01-18 |
Family
ID=17072173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24129696A Expired - Lifetime JP3735165B2 (en) | 1996-08-23 | 1996-08-23 | Power converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3735165B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006156678A (en) * | 2004-11-29 | 2006-06-15 | Honda Motor Co Ltd | Cooling structure for coil |
| US20120068468A1 (en) * | 2007-06-18 | 2012-03-22 | General Electric Company | System for integrated thermal management |
-
1996
- 1996-08-23 JP JP24129696A patent/JP3735165B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006156678A (en) * | 2004-11-29 | 2006-06-15 | Honda Motor Co Ltd | Cooling structure for coil |
| US20120068468A1 (en) * | 2007-06-18 | 2012-03-22 | General Electric Company | System for integrated thermal management |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3735165B2 (en) | 2006-01-18 |
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