JPS5558773A - Overvoltage protector for thyristor - Google Patents
Overvoltage protector for thyristorInfo
- Publication number
- JPS5558773A JPS5558773A JP13202578A JP13202578A JPS5558773A JP S5558773 A JPS5558773 A JP S5558773A JP 13202578 A JP13202578 A JP 13202578A JP 13202578 A JP13202578 A JP 13202578A JP S5558773 A JPS5558773 A JP S5558773A
- Authority
- JP
- Japan
- Prior art keywords
- thyristor
- capacitor
- constant voltage
- turn
- voltage
- 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
- Protection Of Static Devices (AREA)
- Power Conversion In General (AREA)
Abstract
PURPOSE: To protect a thyristor from breakdown, by providing a series circuit consisting of a constant voltage element and a capacitor in parallel with the thyristor and by charging the capacitor to the control electrode of the thyristor to turn it on.
CONSTITUTION: A series circuit 8 consisting of a constant voltage element 2 and a capacitor 9 is provided in parallel with a thyristor 1 to be protected. When the charge of the capacitor 9 reaches a prescribed level, it is discharged to the control electrode of the thyristor 1 through a switching element 10 to turn on the thyristor. When a forward overvoltage higher than the limit voltage of the constant voltage element 2 is applied to the thyristor 1, the capacitor 9 is charged while, the voltage applied to the thyristor is suppressed to the limit voltage of the constant voltage element 2. When the charge of the capacitor reaches the prescribed level, the switching element 10 is closed to turn on the thyristor 1. An always stable controlled current is thus obtained independently of the wave form of the voltage applied to the thyristor. This results in protecting the thyristor from breakdown.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13202578A JPS5558773A (en) | 1978-10-25 | 1978-10-25 | Overvoltage protector for thyristor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13202578A JPS5558773A (en) | 1978-10-25 | 1978-10-25 | Overvoltage protector for thyristor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5558773A true JPS5558773A (en) | 1980-05-01 |
Family
ID=15071740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13202578A Pending JPS5558773A (en) | 1978-10-25 | 1978-10-25 | Overvoltage protector for thyristor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5558773A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03198618A (en) * | 1989-12-25 | 1991-08-29 | Fuji Electric Co Ltd | Snubber circuit for power converter |
| JP2011205887A (en) * | 2010-03-25 | 2011-10-13 | Abb Schweiz Ag | Bridging unit |
| EP3480932A1 (en) * | 2017-11-02 | 2019-05-08 | Siemens Aktiengesellschaft | Electrical assembly with submodules and submodules as such |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916368A (en) * | 1972-05-19 | 1974-02-13 | ||
| JPS5161764A (en) * | 1974-11-27 | 1976-05-28 | Hitachi Ltd | HANDOTAISEIGYOSEIRYUSOSHINO KADENATSUHOGOSOCHI |
-
1978
- 1978-10-25 JP JP13202578A patent/JPS5558773A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4916368A (en) * | 1972-05-19 | 1974-02-13 | ||
| JPS5161764A (en) * | 1974-11-27 | 1976-05-28 | Hitachi Ltd | HANDOTAISEIGYOSEIRYUSOSHINO KADENATSUHOGOSOCHI |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03198618A (en) * | 1989-12-25 | 1991-08-29 | Fuji Electric Co Ltd | Snubber circuit for power converter |
| JP2011205887A (en) * | 2010-03-25 | 2011-10-13 | Abb Schweiz Ag | Bridging unit |
| EP3480932A1 (en) * | 2017-11-02 | 2019-05-08 | Siemens Aktiengesellschaft | Electrical assembly with submodules and submodules as such |
| US10601340B2 (en) | 2017-11-02 | 2020-03-24 | Siemens Aktiengesellschaft | Submodule and electrical arrangement having submodules |
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