JPS5720172A - Protecting method for inverter from overvoltage - Google Patents

Protecting method for inverter from overvoltage

Info

Publication number
JPS5720172A
JPS5720172A JP9208180A JP9208180A JPS5720172A JP S5720172 A JPS5720172 A JP S5720172A JP 9208180 A JP9208180 A JP 9208180A JP 9208180 A JP9208180 A JP 9208180A JP S5720172 A JPS5720172 A JP S5720172A
Authority
JP
Japan
Prior art keywords
circuit
firing
scr
main
scrs
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
JP9208180A
Other languages
Japanese (ja)
Inventor
Osamu Sato
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP9208180A priority Critical patent/JPS5720172A/en
Publication of JPS5720172A publication Critical patent/JPS5720172A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Abstract

PURPOSE:To prevent the overvoltage of a commutating capacitor when a protecting fuse is fused, by detecting the fusing of the fuse, blocking the firing pulses to the auxiliary SCRs of an inverter circuit, and applying continuous firing pulses to the main SCRs. CONSTITUTION:The output terminal of a fuse fusing-detecting circuit 11 is connected to both the input terminal of a main SCR continuously firing pulse command circuit 12 and the input terminal of an auxiliary SCR-firing circuit 10, while the output terminal of a main SCR command circuit 12 is connected to the input terminal of a main SCR-firing circuit 8, so that the output signal from the detecting circuit 11 is introduced to the auxiliary SCR-firing circuit 10 to lock said circuit 10 in order to block the firing signals to auxiliary SCRs SA1-SA4 as well as the output signal from the detecting circuit 11 is introduced to the command circuit 12 to release the lock on said circuit 12 in order to introduce the output signal thereof to the firing circuit 8, from which continuous firing pulses are fed to main SCRs S1- S4. Thereby, a commutating capacitor can be prevented from becoming overvoltage.
JP9208180A 1980-07-05 1980-07-05 Protecting method for inverter from overvoltage Pending JPS5720172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9208180A JPS5720172A (en) 1980-07-05 1980-07-05 Protecting method for inverter from overvoltage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9208180A JPS5720172A (en) 1980-07-05 1980-07-05 Protecting method for inverter from overvoltage

Publications (1)

Publication Number Publication Date
JPS5720172A true JPS5720172A (en) 1982-02-02

Family

ID=14044488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9208180A Pending JPS5720172A (en) 1980-07-05 1980-07-05 Protecting method for inverter from overvoltage

Country Status (1)

Country Link
JP (1) JPS5720172A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5429630A (en) * 1992-05-29 1995-07-04 Kimberly-Clark Corporation Absorbent article and a method of removing said article from an undergarment
US5489283A (en) * 1983-07-05 1996-02-06 The Procter & Gamble Company Shaped sanitary napkin with flaps
US6004893A (en) * 1983-07-05 1999-12-21 The Procter & Gamble Company Shaped sanitary napkin with flaps
US6746435B1 (en) 1983-07-05 2004-06-08 The Procter & Gamble Company Shaped sanitary napkin with flaps

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5489283A (en) * 1983-07-05 1996-02-06 The Procter & Gamble Company Shaped sanitary napkin with flaps
US6004893A (en) * 1983-07-05 1999-12-21 The Procter & Gamble Company Shaped sanitary napkin with flaps
US6746435B1 (en) 1983-07-05 2004-06-08 The Procter & Gamble Company Shaped sanitary napkin with flaps
US5429630A (en) * 1992-05-29 1995-07-04 Kimberly-Clark Corporation Absorbent article and a method of removing said article from an undergarment

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