JPH06253550A - Self-excited converter - Google Patents
Self-excited converterInfo
- Publication number
- JPH06253550A JPH06253550A JP5037760A JP3776093A JPH06253550A JP H06253550 A JPH06253550 A JP H06253550A JP 5037760 A JP5037760 A JP 5037760A JP 3776093 A JP3776093 A JP 3776093A JP H06253550 A JPH06253550 A JP H06253550A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- capacitor
- self
- semiconductor device
- accessories
- 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
- Fire Alarms (AREA)
- Power Conversion In General (AREA)
- Inverter Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、直流回路に油入りの直
流コンデンサを有する自励式変換器に係り、特に直流コ
ンデンサの発火防止機能、延焼防止機能を施こした自励
式変換装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-excited converter having an oil-filled DC capacitor in a DC circuit and, more particularly, to a self-excited converter having a DC capacitor ignition prevention function and a fire spread prevention function.
【０００２】[0002]
【従来の技術】昨今、電力系統との連係用の電力変換装
置に大容量の自励式変換器が使用されるようになった。
以下図面を参照して従来の自励式変換器の概要を説明す
る。2. Description of the Related Art Recently, large-capacity self-excited converters have come to be used in power converters for linking with a power system.
An outline of a conventional self-excited converter will be described below with reference to the drawings.
【０００３】図２は、電圧形多重インバータ等の自励式
変換器の主回路構成図であり、図３は図２の自励式変換
器の斜視図である。図中１は、ゲートターンオフ・サイ
リスタ（以下単にＧＴＯと記す）モジュールであり、こ
れにダイオード２が逆並列に接続されている。このＧＴ
Ｏモジュール１が、４組直列接続されて１相２アームと
し、これを３組並列接続して、３相ブリッジ回路を構成
し、インバータ部を構成する。４は油入り直流コンデン
サであり、インバータ部に対して並列に接続されてい
る。そして多重インバータは、前記のインバータ部と直
流コンデンサ４の組み合わせを導体５にて複数台並列に
接続して構成される。この自励式変換器は、それ自体高
電圧機器である為に、その周囲をフェンス等で囲うか又
は変換器そのものを筐体内に収納し、人が外部から容易
に高電圧部位に触れることのない様にしている。FIG. 2 is a main circuit configuration diagram of a self-exciting converter such as a voltage type multiple inverter, and FIG. 3 is a perspective view of the self-exciting converter of FIG. In the figure, reference numeral 1 is a gate turn-off thyristor (hereinafter simply referred to as GTO) module, to which a diode 2 is connected in antiparallel. This GT
Four sets of O modules 1 are connected in series to form one phase and two arms, and three sets are connected in parallel to form a three-phase bridge circuit and an inverter unit. Reference numeral 4 is an oil-containing DC capacitor, which is connected in parallel with the inverter unit. The multiple inverter is configured by connecting a plurality of combinations of the above-mentioned inverter unit and the DC capacitor 4 in parallel with the conductor 5. Since this self-exciting converter is a high-voltage device itself, it is surrounded by a fence or the like, or the converter itself is housed in a housing so that a person cannot easily touch the high-voltage part from the outside. I am doing it.
【０００４】[0004]
【発明が解決しようとする課題】このような自励式変換
器においては、油入り直流コンデンサ４の内部で、万
一、アークの発生及びそれによりコンデンサ容器より油
漏れが生じた場合、発火防止機能、延焼防止機能を具備
してない為に、アークがコンデンサ４の容器より漏れた
油に引火し、それがＧＴＯモジュール１、及びその付属
品に次々に延焼し、変換器のみならず変換器の周囲の機
器、建屋に迄火災が及ぶ可能性が有った。そこで、本発
明の目的は油入り直流コンデンサからの発火防止、延焼
防止機能を備えた自励式変換装置を提供することにあ
る。In such a self-excited converter, an ignition preventing function is provided in the case where an arc is generated inside the oil-containing DC capacitor 4 and oil leaks from the capacitor container. Since the arc does not have a fire spread prevention function, the arc ignites the oil leaked from the container of the condenser 4, which in turn spreads fire to the GTO module 1 and its accessories, which causes not only the converter but also the converter. There was a possibility that a fire would spread to surrounding equipment and buildings. Therefore, an object of the present invention is to provide a self-excited converter having a function of preventing ignition and spread of fire from an oil-filled DC capacitor.
【０００５】[0005]
【課題を解決するための手段】前記目的を達成するため
に、請求項１に対応する発明は、自己消弧形半導体素子
とその付属品を複数個収納し、その下部に油入り直流コ
ンデンサを配設し、前記油入り直流コンデンサ部を据付
建屋の地下部分又はコンクリート壁等により他の部分と
隔離した構造とした自励式変換装置である。前記目的を
達成するために、請求項２に対応する発明は、自己消弧
形半導体素子とその付属品を複数個収納し、その下部に
油入り直流コンデンサを配設し、前記油入り直流コンデ
ンサ部を据付建屋の地下部分又はコンクリート壁等によ
り他の部分と隔離した構造とし、前記油入り直流コンデ
ンサの収納部を暗室とし、この暗室の中に赤外線センサ
ー等の発火検知装置を取付けた自励式変換装置である。
前記目的を達成するために、請求項３に対応する発明
は、自己消弧形半導体素子とその付属品を複数個収納
し、その下部に油入り直流コンデンサを配設し、前記油
入り直流コンデンサ部を据付建屋の地下部分又はコンク
リート壁等により他の部分と隔離した構造とし、前記油
入り直流コンデンサの収納部において発火時に前記収納
部に炭酸ガス等の不燃ガスを封入するための不燃ガス封
入装置を設けた自励式変換装置である。前記目的を達成
するために、請求項４に対応する発明は、自己消弧形半
導体素子とその付属品を複数個収納し、その下部に油入
り直流コンデンサを配設し、In order to achieve the above-mentioned object, the invention according to claim 1 accommodates a plurality of self-arc-extinguishing type semiconductor elements and their accessories, and an oil-filled DC capacitor under the same. It is a self-excited converter having a structure in which the oil-filled DC capacitor section is arranged to be separated from other parts by an underground part of the installation building or a concrete wall. In order to achieve the above-mentioned object, the invention corresponding to claim 2 stores a plurality of self-arc-extinguishing type semiconductor elements and their accessories, and disposes an oil-filled DC capacitor under the oil-filled DC capacitor. It is a self-excited type with a structure where the part is isolated from other parts by the underground part of the installation building or concrete wall etc. It is a conversion device.
In order to achieve the above object, the invention according to claim 3 stores a plurality of self-arc-extinguishing type semiconductor devices and their accessories, and arranges an oil-filled DC capacitor under the oil-filled DC capacitor. The structure is separated from the other parts by the underground part of the installation building or the concrete wall, etc., and non-combustible gas encapsulation for encapsulating non-combustible gas such as carbon dioxide gas in the storage part of the oil-filled DC capacitor at the time of ignition It is a self-excited converter provided with a device. In order to achieve the above object, the invention according to claim 4 stores a plurality of self-arc-extinguishing type semiconductor elements and their accessories, and arranges an oil-filled DC capacitor under the
【０００６】前記油入り直流コンデンサ部を据付建屋の
地下部分又はコンクリート壁等により他の部分と隔離し
た構造とし、前記油入り直流コンデンサの収納部を密閉
構造とし、発火時に酸欠状態となるようにすることによ
り自己消火することを特徴とする自励式変換装置であ
る。前記目的を達成するために、請求項５に対応する発
明は、自己消弧形半導体素子とその付属品を複数個収納
し、その下部に油入り直流コンデンサを配設し、[0006] The oil-containing DC capacitor section is constructed so as to be isolated from other parts by the underground portion of the installation building or a concrete wall, etc., and the oil-containing DC capacitor housing section is hermetically sealed so that an oxygen deficiency state occurs at the time of ignition. It is a self-excited conversion device characterized by self-extinguishing by making it. In order to achieve the above-mentioned object, the invention according to claim 5 accommodates a plurality of self-arc-extinguishing type semiconductor elements and their accessories, and arranges an oil-filled DC capacitor under them.
【０００７】前記油入り直流コンデンサ部を据付建屋の
地下部分又はコンクリート壁等により他の部分と隔離し
た構造とし、前記油入り直流コンデンサの収納部に、酸
欠アラーム、換気ファン等の酸欠監視装置を設けた自励
式変換装置である。前記目的を達成するために、請求項
６に対応する発明は、自己消弧形半導体素子とその付属
品を複数個収納し、その下部に油入り直流コンデンサを
配設し、前記油入り直流コンデンサ部を据付建屋の地下
部分又はコンクリート壁等により他の部分と隔離した構
造とし、前記油入り直流コンデンサの収納部において油
入り直流コンデンサから漏れた油を収集箱に集め、集合
排油する構造とした自励式変換装置である。[0007] The oil-containing DC capacitor unit is constructed so as to be isolated from other parts by the underground portion of the installation building or a concrete wall, and the oil-containing DC capacitor storage unit has an oxygen deficiency alarm and an oxygen deficiency monitor such as a ventilation fan. It is a self-excited converter provided with a device. In order to achieve the above-mentioned object, the invention corresponding to claim 6 stores a plurality of self-arc-extinguishing type semiconductor devices and their accessories, and arranges an oil-filled DC capacitor under the oil-filled DC capacitor. A structure in which the part is separated from other parts by the underground part of the installation building or a concrete wall, etc., and the oil leaked from the oil-containing DC capacitor in the storage part of the oil-containing DC capacitor is collected in a collecting box and collectively discharged. It is a self-excited converter.
【０００８】[0008]
【作用】請求項１に対応する発明によれば、油入り直流
コンデンサの収納部を他の部分とは隔離した構造とした
ので、直流コンデンサが発火しても他の部分への延焼を
防止できる。請求項２に対応する発明によれば、直流コ
ンデンサの発火を早期に検知できるので、直ぐに他の部
分への延焼を防止するための措置がとれる。請求項３に
対応する発明によれば、直流コンデンサの発火時に不燃
ガスが封入されるので、自己消化が可能となる。According to the invention corresponding to claim 1, since the housing portion of the oil-filled DC capacitor is separated from other portions, even if the DC capacitor is ignited, it is possible to prevent the spread to other portions. . According to the invention corresponding to claim 2, since the ignition of the DC capacitor can be detected at an early stage, it is possible to immediately take measures to prevent the spread of fire to other parts. According to the invention corresponding to claim 3, since the non-combustible gas is filled when the DC capacitor is ignited, the self-extinguishing becomes possible.
【０００９】請求項４に対応する発明によれば、直流コ
ンデンサの収納部を密閉構造としたので、直流コンデン
サの発火時に酸欠状態となることから、自己消火が可能
となる。請求項５に対応する発明によれば、酸欠監視装
置を設けたので、作業員の酸欠による事故を防止でき
る。請求項６に対応する発明によれば、直流コンデンサ
から漏洩した油の廃油処理が迅速にできる。According to the invention corresponding to claim 4, since the accommodating portion of the direct current capacitor has a closed structure, when the direct current capacitor is ignited, an oxygen deficiency state is established, so that self-extinguishing is possible. According to the invention corresponding to claim 5, since the oxygen deficiency monitoring device is provided, an accident due to oxygen deficiency of the worker can be prevented. According to the invention corresponding to claim 6, the waste oil treatment of the oil leaked from the DC capacitor can be performed quickly.
【００１０】[0010]
【実施例】以下、本発明の実施例について、図面を参照
して説明する。図１は、本発明の一実施例を示す斜視図
である。地上側に複数のＧＴＯモジュール１群を配設
し、地下室１２側に複数の油入り直流コンデンサ４群を
配設し、両者間には、防火材からなる防火床７に配設さ
れている。そして、直流コンデンサ４が配設されている
地下室１２は、図示しない防火材からなる隔壁により密
閉構造に構成されている。さらに、防火床７にブッシン
グ６が貫通固定され、このブッシング６の導体１５によ
りＧＴＯモジュール１と直流コンデンサ４が電気的に接
続されている。この場合、ＧＴＯ素子３と直流コンデン
サ４間のインダクタンスを小さくしＧＴＯ素子３に加わ
るターンオフ時の過電圧を低く抑えるために（ＧＴＯ素
子３の過電圧破壊防止）直流コンデンサ４群とＧＴＯモ
ジュール１群が最短に接続されるようになっている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention. A plurality of GTO modules 1 group are arranged on the ground side, a plurality of oil-containing DC capacitors 4 groups are arranged on the basement 12 side, and a fire prevention floor 7 made of a fire prevention material is arranged between them. Further, the basement 12 in which the DC capacitor 4 is arranged is constructed in a closed structure by a partition wall made of a fireproof material (not shown). Further, the bushing 6 is fixed through the fire prevention floor 7, and the conductor 15 of the bushing 6 electrically connects the GTO module 1 and the DC capacitor 4 to each other. In this case, in order to reduce the inductance between the GTO element 3 and the DC capacitor 4 and suppress the overvoltage at the time of turn-off applied to the GTO element 3 (preventing overvoltage breakdown of the GTO element 3), the DC capacitor 4 group and the GTO module 1 group are the shortest. It is designed to be connected to.
【００１１】ＧＴＯモジュール１は、４段積層されたも
のが４列並んで計１６台で３相ブリッジ回路の２アーム
分を構成している。直流コンデンサ４群は、導体５によ
りそれぞれ電気的に並列に接続してある。また、地下室
１２を暗室にして、発火部を赤外線センサー９にて発火
を早期発見できるようにしたものである。更に、地下室
１２内で発火した場合、炭酸ガス１０を封入して、地下
室１２内を酸欠状態にして自己消火できるようにしたも
のである。また、地下室１２を密閉にし酸欠状態を加速
させ自己消火できるようにしたものである。更に、火災
後、人が地下室１２へ入る時の酸欠防止のために酸欠ア
ラーム１１、換気ファン８を設置したものである。ま
た、直流コンデンサ４から油漏れした廃油の処置を迅速
にするために油ドレンパン１３を設け、ポンプ１４にて
廃油を廃棄するようにしたものである。The GTO module 1 has four stacked units arranged in four rows and 16 units in total constitute two arms of a three-phase bridge circuit. The DC capacitors 4 are electrically connected in parallel by conductors 5. Also, the basement 12 is a dark room so that the ignition part can be detected early by the infrared sensor 9. Further, when ignition occurs in the basement 12, carbon dioxide gas 10 is sealed in the basement 12 so that the interior of the basement 12 is in an oxygen-deficient state to allow self-extinguishing. In addition, the basement 12 is hermetically sealed so that the oxygen deficiency state can be accelerated to self-extinguish. Furthermore, an oxygen deficiency alarm 11 and a ventilation fan 8 are installed to prevent oxygen deficiency when a person enters the basement 12 after a fire. Further, an oil drain pan 13 is provided to expedite the treatment of waste oil that has leaked from the DC capacitor 4, and the waste oil is discarded by the pump 14.
【００１２】以上述べたように本発明の実施例によれ
ば、ＧＴＯモジュール１と直流コンデンサ４は、防火材
により完全に遮蔽されている。分離できる。又、直流コ
ンデンサ４を地下室１２に入れることにより、密閉構造
にしやすく、酸欠状態にしやすい。これにより赤外線セ
ンサー９、炭酸ガス１０を封入することにより、発火を
早期に発見する。更に火災後に人が地下室１２に入る時
の酸欠防止のための酸欠アラーム１１、換気ファン８の
設置を行なう。又、直流コンデンサ４下部に油ドレンパ
ン１３を設置し、油漏れの廃油をポンプ１４にて地上に
引き上げ廃油を廃棄できる。As described above, according to the embodiment of the present invention, the GTO module 1 and the DC capacitor 4 are completely shielded by the fireproof material. Can be separated. Also, by putting the DC capacitor 4 in the basement 12, it is easy to form a closed structure and to easily create an oxygen-deficient state. By enclosing the infrared sensor 9 and the carbon dioxide gas 10 in this way, the ignition is found early. Further, an oxygen deficiency alarm 11 and a ventilation fan 8 are installed to prevent oxygen deficiency when a person enters the basement 12 after a fire. Further, an oil drain pan 13 is installed below the DC capacitor 4, and the waste oil leaking oil can be pulled up to the ground by the pump 14 and discarded.
【００１３】[0013]
【発明の効果】以上説明のように本発明によれば、直流
コンデンサ群とＧＴＯモジュール群はしゃへいされ、発
火時の相互間の延焼防止ができ、また発火の早期発見が
でき、さらに火災の消火スピードが早くなり、さらにま
た地下室の酸欠防止が望め、また迅速な廃油処理ができ
る自励式変換装置を提供できる。As described above, according to the present invention, the DC capacitor group and the GTO module group are shielded, the spread of fire can be prevented at the time of ignition, the ignition can be detected early, and the fire can be extinguished. It is possible to provide a self-excited conversion device that is faster in speed and can be expected to prevent oxygen deficiency in the basement and can quickly process waste oil.
【図１】本発明の一実施例を示す自励式変換器の斜視
図。FIG. 1 is a perspective view of a self-exciting converter showing an embodiment of the present invention.
【図２】自励式変換器の主回路図。FIG. 2 is a main circuit diagram of a self-exciting converter.
【図３】従来の自励式変換器の一例を示す斜視図。FIG. 3 is a perspective view showing an example of a conventional self-excited converter.
【符号の説明】 １…ＧＴＯモジュール、２…ダイオード、３…ＧＴＯ、
４…直流コンデンサ、５…導体、６…ブッシング、７…
防火床、８…換気ファン、９…赤外線センサー１０…炭
酸ガス封入装置、１１…酸欠アラーム、１２…地下室、
１３…油ドレンパン、１４…ポンプ、１５…導体。[Explanation of Codes] 1 ... GTO module, 2 ... Diode, 3 ... GTO,
4 ... DC capacitor, 5 ... conductor, 6 ... bushing, 7 ...
Fireproof floor, 8 ... Ventilation fan, 9 ... Infrared sensor 10, Carbon dioxide filling device, 11 ... Oxygen deficiency alarm, 12 ... Basement,
13 ... Oil drain pan, 14 ... Pump, 15 ... Conductor.
Claims (6)
数個収納し、その下部に油入り直流コンデンサを配設
し、 前記油入り直流コンデンサ部を据付建屋の地下部分又は
コンクリート壁等により他の部分と隔離した構造とした
自励式変換装置。1. A self-arc-extinguishing type semiconductor device and a plurality of accessories thereof are housed, an oil-containing DC capacitor is disposed below the semiconductor device, and the oil-containing DC capacitor portion is provided by an underground portion of an installation building or a concrete wall. A self-exciting converter with a structure isolated from other parts.
数個収納し、その下部に油入り直流コンデンサを配設
し、 前記油入り直流コンデンサ部を据付建屋の地下部分又は
コンクリート壁等により他の部分と隔離した構造とし、 前記油入り直流コンデンサの収納部を暗室とし、この暗
室の中に赤外線センサー等の発火検知装置を取付けた自
励式変換装置。2. A self-arc-extinguishing type semiconductor device and a plurality of accessories thereof are housed, an oil-containing DC capacitor is disposed below the same, and the oil-containing DC capacitor portion is provided by an underground part of a building or a concrete wall or the like. A self-excited conversion device having a structure separated from other parts, a storage room for the oil-containing DC capacitor is a dark room, and an ignition detection device such as an infrared sensor is mounted in the dark room.
数個収納し、その下部に油入り直流コンデンサを配設
し、 前記油入り直流コンデンサ部を据付建屋の地下部分又は
コンクリート壁等により他の部分と隔離した構造とし、 前記油入り直流コンデンサの収納部において発火時に前
記収納部に炭酸ガス等の不燃ガスを封入するための不燃
ガス封入装置を設けた自励式変換装置。3. A self-extinguishing type semiconductor device and a plurality of accessories thereof are housed, an oil-containing DC capacitor is arranged below the same, and the oil-containing DC capacitor portion is provided by an underground part of a building or a concrete wall or the like. A self-excited conversion device having a structure separated from other parts and provided with a non-combustible gas charging device for charging a non-combustible gas such as carbon dioxide gas in the storage part of the oil-containing DC capacitor at the time of ignition in the storage part.
数個収納し、その下部に油入り直流コンデンサを配設
し、 前記油入り直流コンデンサ部を据付建屋の地下部分又は
コンクリート壁等により他の部分と隔離した構造とし、
前記油入り直流コンデンサの収納部を密閉構造とし、発
火時に酸欠状態となるようにすることにより自己消火す
ることを特徴とする自励式変換装置。4. A self-arc-extinguishing type semiconductor device and a plurality of accessories thereof are housed, an oil-containing DC capacitor is disposed below the semiconductor device, and the oil-containing DC capacitor portion is provided by an underground portion of an installation building or a concrete wall. Separated from other parts,
A self-excited conversion device, characterized in that the oil-containing DC capacitor has a closed structure for self-extinguishing by causing an oxygen deficiency state at the time of ignition.
数個収納し、その下部に油入り直流コンデンサを配設
し、 前記油入り直流コンデンサ部を据付建屋の地下部分又は
コンクリート壁等により他の部分と隔離した構造とし、
前記油入り直流コンデンサの収納部に、酸欠アラーム、
換気ファン等の酸欠監視装置を設けた自励式変換装置。5. A self-arc-extinguishing type semiconductor device and a plurality of accessories thereof are housed, an oil-containing DC capacitor is disposed below the same, and the oil-containing DC capacitor portion is provided by an underground portion of a building for installation or a concrete wall. Separated from other parts,
An oxygen deficiency alarm is stored in the storage part of the oil-containing DC capacitor.
Self-exciting converter equipped with an oxygen deficiency monitoring device such as a ventilation fan.
数個収納し、その下部に油入り直流コンデンサを配設
し、 前記油入り直流コンデンサ部を据付建屋の地下部分又は
コンクリート壁等により他の部分と隔離した構造とし、 前記油入り直流コンデンサの収納部において油入り直流
コンデンサから漏れた油を収集箱に集め、集合排油する
構造とした自励式変換装置。6. A self-arc-extinguishing type semiconductor device and a plurality of accessories thereof are housed, an oil-containing DC capacitor is disposed below the semiconductor device, and the oil-containing DC capacitor portion is provided by an underground portion of the installation building or a concrete wall. A self-excited converter having a structure separated from other parts, in which oil leaking from the oil-containing DC capacitor in the oil-containing DC capacitor housing is collected in a collecting box and collected and discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03776093A JP3155852B2 (en) | 1993-02-26 | 1993-02-26 | Self-excited converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03776093A JP3155852B2 (en) | 1993-02-26 | 1993-02-26 | Self-excited converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06253550A true JPH06253550A (en) | 1994-09-09 |
| JP3155852B2 JP3155852B2 (en) | 2001-04-16 |
Family
ID=12506431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03776093A Expired - Fee Related JP3155852B2 (en) | 1993-02-26 | 1993-02-26 | Self-excited converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3155852B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010104204A (en) * | 2008-10-27 | 2010-05-06 | Denso Corp | Power converter |
| CN110718034A (en) * | 2019-09-10 | 2020-01-21 | 许继集团有限公司 | High-voltage direct-current transmission converter valve tower with fire monitoring function |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04372587A (en) * | 1991-06-20 | 1992-12-25 | Fuji Electric Co Ltd | Double layer cvcf unit and cvcf system |
-
1993
- 1993-02-26 JP JP03776093A patent/JP3155852B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04372587A (en) * | 1991-06-20 | 1992-12-25 | Fuji Electric Co Ltd | Double layer cvcf unit and cvcf system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010104204A (en) * | 2008-10-27 | 2010-05-06 | Denso Corp | Power converter |
| CN110718034A (en) * | 2019-09-10 | 2020-01-21 | 许继集团有限公司 | High-voltage direct-current transmission converter valve tower with fire monitoring function |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3155852B2 (en) | 2001-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |