JPS60116736U - Switching element overvoltage protection device - Google Patents

Switching element overvoltage protection device

Info

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
Application number
JP380184U
Other languages
Japanese (ja)
Inventor
鬼頭 恭民
関 修
Original Assignee
株式会社明電舎
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社明電舎 filed Critical 株式会社明電舎
Priority to JP380184U priority Critical patent/JPS60116736U/en
Publication of JPS60116736U publication Critical patent/JPS60116736U/en
Pending legal-status Critical Current

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

【図面の簡単な説明】[Brief explanation of drawings]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] (1)入力電流をオンオフして所望の出力を得る電気回
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.
(2)  前記第2のコンデンサの容量を第1のコンデ
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.
(3)  前記電気回路が複数個のスイッチング素子に
゛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.
JP380184U 1984-01-14 1984-01-14 Switching element overvoltage protection device Pending JPS60116736U (en)

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)

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