JPS60116736U - Switching element overvoltage protection device - Google Patents
Switching element overvoltage protection deviceInfo
- Publication number
- JPS60116736U JPS60116736U JP380184U JP380184U JPS60116736U JP S60116736 U JPS60116736 U JP S60116736U JP 380184 U JP380184 U JP 380184U JP 380184 U JP380184 U JP 380184U JP S60116736 U JPS60116736 U JP S60116736U
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- protection device
- parallel
- overvoltage protection
- capacitor
- 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
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
- Electronic Switches (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はサージからの従来の保護手段の１つとして帰還
ダイオードを設けであるインバータ保護装置の回路説明
図、第２図ａは同じ〈従来のクリッパを用いたインバー
多保護装置の回路説明図、第２図すは同じ〈従来のスナ
バ−を用いたインバータ保護装置の回路説明図、第３図
は本考案に係るインバータ保護装置（自己消弧型スイッ
チング素子の過電圧保護装置）の回路説明図。
１・・・３相インバータ、２・・・直流電源、３・・・
平滑コンデンサ、４・・・負荷、５ａ〜５ｆ・・・自己
消弧型スイッチング素子、６ａ〜６ｆ・・・帰還ダイオ
ード、７・・・クリッパ回路、７ａ〜７ｃ・・・本考案
に係る保護装置のクリッパ回路、８・・・順方向のダイ
オード、９・・・コンデンサ、１０・・・抵抗、１１・
・・コンデンサ。
−−一−］
−２−Figure 1 is a circuit explanatory diagram of an inverter protection device that is equipped with a feedback diode as one of the conventional protection means from surges, and Figure 2a is the same circuit explanatory diagram of an inverter protection device using a conventional clipper. , Figure 2 is the same circuit diagram of an inverter protection device using a conventional snubber, and Figure 3 is a circuit diagram of an inverter protection device (overvoltage protection device for self-extinguishing switching elements) according to the present invention. . 1...3-phase inverter, 2...DC power supply, 3...
Smoothing capacitor, 4... Load, 5a-5f... Self-extinguishing switching element, 6a-6f... Feedback diode, 7... Clipper circuit, 7a-7c... Protective device according to the present invention clipper circuit, 8... forward diode, 9... capacitor, 10... resistor, 11...
...Capacitor. −−1−] −2−
Claims (3)
路に設けられた少なくとも１個の一スイッチング素子に
対して順方向に接続したダイオードと、このダイオード
に並列接続した抵抗素子からなる並列体と、該並列体に
第１のコンデンサを直列接続してなるクリッパ回路を前
記スイッチング素子に並列接続し、かつ前記並列体に第
゛ ２のコンデンサを並列接続してなることを特徴と
するスイッチング素子の過電圧保持装置。(1) A parallel body consisting of a diode connected in the forward direction to at least one switching element provided in an electric circuit that turns input current on and off to obtain a desired output, and a resistance element connected in parallel to this diode. and a clipper circuit comprising a first capacitor connected in series to the parallel body, connected in parallel to the switching element, and a second capacitor connected in parallel to the parallel body. overvoltage holding device.
ンサの容量よりも小となるように選定したことを特徴と
する実用新案登録請求の範囲第１項に記載のスイッチン
グ素子の過電圧保護装置。(2) The overvoltage protection device for a switching element according to claim 1, wherein the capacitance of the second capacitor is selected to be smaller than the capacitance of the first capacitor.
゛よって形成されたブリッヂ回路を有するインバータで
ある実用新案登録請求の範囲第１項又は第２項に記載の
スイッチング素子の過電圧保護装置。(3) The overvoltage protection device for a switching element according to claim 1 or 2, wherein the electric circuit is an inverter having a bridge circuit formed by a plurality of switching elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP380184U JPS60116736U (en) | 1984-01-14 | 1984-01-14 | Switching element overvoltage protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP380184U JPS60116736U (en) | 1984-01-14 | 1984-01-14 | Switching element overvoltage protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60116736U true JPS60116736U (en) | 1985-08-07 |
Family
ID=30478768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP380184U Pending JPS60116736U (en) | 1984-01-14 | 1984-01-14 | Switching element overvoltage protection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60116736U (en) |
-
1984
- 1984-01-14 JP JP380184U patent/JPS60116736U/en active Pending
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