JPS5952736U - Gate turn-off thyristor protection circuit - Google Patents
Gate turn-off thyristor protection circuitInfo
- Publication number
- JPS5952736U JPS5952736U JP14772082U JP14772082U JPS5952736U JP S5952736 U JPS5952736 U JP S5952736U JP 14772082 U JP14772082 U JP 14772082U JP 14772082 U JP14772082 U JP 14772082U JP S5952736 U JPS5952736 U JP S5952736U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- gate turn
- snubber
- thyristor
- parallel
- 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
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図は従来のスナバ−回路の一例を示す回路図、第２
図は本考案の一実施例を示す回路図、第３図は本考案の
他の実施例を示す回路図である。
１・・・直流電源、２・・・ゲートターンオフサイリス
タ、３・・・負荷、４・・・スナバ−回路、５，１５゜
２５ａ〜２５ｎ・・・ダイオード、６，１４．２４ａ〜
２４ｎ・・・スナバ−コンデンサ、７・・・抵抗、１０
・・・電流検出器、１１・・・ゲート回路、１６．２０
ａ〜２０ｎ・・・附加用スナバ−コンデンサ回路、１３
゜２３ａ〜２３ｎ・・・サイリスタ。Figure 1 is a circuit diagram showing an example of a conventional snubber circuit;
The figure is a circuit diagram showing one embodiment of the present invention, and FIG. 3 is a circuit diagram showing another embodiment of the present invention. 1... DC power supply, 2... Gate turn-off thyristor, 3... Load, 4... Snubber circuit, 5, 15° 25a~25n... Diode, 6, 14.24a~
24n...Snubber capacitor, 7...Resistor, 10
...Current detector, 11...Gate circuit, 16.20
a~20n...additional snubber capacitor circuit, 13
゜23a-23n...thyristor.
Claims (1)
フサイリスクと、このゲートターンオフサイリスタの両
端に並列接続され、第１ダイオードおよび第１スナバ−
コンデンサから成る直列回路と該ダイオードに並列接続
された抵抗とで構成されたスナバ−回路とを有する回路
において、前記第１スナバ−コンデンサの両端に並列接
続され、制御可能なスイッチング素子および第２のスナ
バ−コンデンサから成る直列回路と該スイッチング素子
に逆並列接続された第２ダイオードとで構成された附加
用スナバ−コンデンサ回路と、前記直流電源と前記ゲー
トターンオフサイリスクを結ぶ電路に介挿された電流検
出器と、該電流検出器の出力が設定値を超えたときに前
記附加用スナバ−コンデンサ回路のスイッチング素子に
オン制御信号を与えるゲート回路とを備えたことを特徴
とするゲートターンオフサイリスタの保護回路。A gate turn-off thyristor is inserted in the electrical path connecting the DC power source and the load, and a first diode and a first snubber are connected in parallel to both ends of the gate turn-off thyristor.
A circuit comprising a series circuit comprising a capacitor and a snubber circuit comprising a resistor connected in parallel to the diode, the circuit comprising a controllable switching element and a second snubber circuit connected in parallel across the first snubber capacitor. An additional snubber capacitor circuit consisting of a series circuit consisting of a snubber capacitor and a second diode connected in anti-parallel to the switching element, and an additional snubber capacitor circuit inserted in an electric path connecting the DC power supply and the gate turn-off circuit. A gate turn-off thyristor comprising: a current detector; and a gate circuit that applies an ON control signal to a switching element of the additional snubber capacitor circuit when the output of the current detector exceeds a set value. protection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14772082U JPS5952736U (en) | 1982-09-28 | 1982-09-28 | Gate turn-off thyristor protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14772082U JPS5952736U (en) | 1982-09-28 | 1982-09-28 | Gate turn-off thyristor protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5952736U true JPS5952736U (en) | 1984-04-06 |
Family
ID=30328419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14772082U Pending JPS5952736U (en) | 1982-09-28 | 1982-09-28 | Gate turn-off thyristor protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5952736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0210919A (en) * | 1988-06-28 | 1990-01-16 | Nissin Electric Co Ltd | Snubber circuit |
-
1982
- 1982-09-28 JP JP14772082U patent/JPS5952736U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0210919A (en) * | 1988-06-28 | 1990-01-16 | Nissin Electric Co Ltd | Snubber circuit |
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