JPS5494865A - Thyristor converter - Google Patents

Thyristor converter

Info

Publication number
JPS5494865A
JPS5494865A JP113378A JP113378A JPS5494865A JP S5494865 A JPS5494865 A JP S5494865A JP 113378 A JP113378 A JP 113378A JP 113378 A JP113378 A JP 113378A JP S5494865 A JPS5494865 A JP S5494865A
Authority
JP
Japan
Prior art keywords
scr
circuit
voltage
overvoltage
scr1
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
JP113378A
Other languages
Japanese (ja)
Inventor
Hisao Amano
Ryuji Iyotani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP113378A priority Critical patent/JPS5494865A/en
Publication of JPS5494865A publication Critical patent/JPS5494865A/en
Pending legal-status Critical Current

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  • Power Conversion In General (AREA)

Abstract

PURPOSE: To avoid the destruction due to the overvoltage of series SCR, by connecting the voltage dividing circuit and constant voltage element in parallel with SCR, and by connecting the negative resistance circuit with the gate of SCR.
CONSTITUTION: When the conversion circuit is constituted with the series circuit of a plurality of SCR's, the negative resistance circuit 2 is in parallel between the anode and the gate of SCR1 and the constant voltage element 3 and the voltage dividing circuit 4 are connected parallelly with SCR1. Further, selecting the break over voltage VBO of SCR1>the operating voltage V2 of the circuit 2, the damage of SCR due to forward overvoltage can be avoided. Further, when selecting the inverse break down voltage of SCR Vg>the operating voltage of element 3 V, since the respective voltage can be suppressed at V3, SCR1 can be prevented from being damage due to overvoltage. When selecting V2> V3, the circuit 2 is operative before the element 3 is operated in case of forward overvoltage. Thus, the damage of SCR due to overvoltage can completely be avoided.
COPYRIGHT: (C)1979,JPO&Japio
JP113378A 1978-01-11 1978-01-11 Thyristor converter Pending JPS5494865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP113378A JPS5494865A (en) 1978-01-11 1978-01-11 Thyristor converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP113378A JPS5494865A (en) 1978-01-11 1978-01-11 Thyristor converter

Publications (1)

Publication Number Publication Date
JPS5494865A true JPS5494865A (en) 1979-07-26

Family

ID=11492936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP113378A Pending JPS5494865A (en) 1978-01-11 1978-01-11 Thyristor converter

Country Status (1)

Country Link
JP (1) JPS5494865A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5843173A (en) * 1981-08-12 1983-03-12 シ−メンス・アクチエンゲゼルシヤフト Circuit for firing power thyristor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5843173A (en) * 1981-08-12 1983-03-12 シ−メンス・アクチエンゲゼルシヤフト Circuit for firing power thyristor

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