JPS5736580A - Protecting method for converter - Google Patents

Protecting method for converter

Info

Publication number
JPS5736580A
JPS5736580A JP11027080A JP11027080A JPS5736580A JP S5736580 A JPS5736580 A JP S5736580A JP 11027080 A JP11027080 A JP 11027080A JP 11027080 A JP11027080 A JP 11027080A JP S5736580 A JPS5736580 A JP S5736580A
Authority
JP
Japan
Prior art keywords
converter
signal
overvoltage
output
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.)
Granted
Application number
JP11027080A
Other languages
Japanese (ja)
Other versions
JPS631831B2 (en
Inventor
Toshiaki Okuyama
Yuzuru Kubota
Hiroshi Nagase
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 JP11027080A priority Critical patent/JPS5736580A/en
Publication of JPS5736580A publication Critical patent/JPS5736580A/en
Publication of JPS631831B2 publication Critical patent/JPS631831B2/ja
Granted 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
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To keep overvoltage of dc output from occurring, by turning off switching elements of a pulse-width modulation converter, which converts ac power voltage into dc, when its dc output voltage is higher than a designated value. CONSTITUTION:A comparator 18 compares output signals of an arithmetic circuit 16 and an oscillator 17. A signal is obtained after pulse-width is modulated in correspondence with each variation. When dc voltage is higher than a designated value, an overvoltage detector 20 will produce a signal. Then a gate amplifier 19 supplies a gate signal for turning off so that a gate turn-off thyristor GTO of a converter 7 switches all off corresponding thereto. As a result, the converter 7 is equivalent to a diode rectifier. A capacitor 8 is thereafter prevented from over-charging. Namely, overvoltage is prevented. In addition, the overvoltage detector 20 keeps an output signal with an FF circuit, the converter 7 opens an ac input breaker for a while, and then final protection is performed.
JP11027080A 1980-08-13 1980-08-13 Protecting method for converter Granted JPS5736580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11027080A JPS5736580A (en) 1980-08-13 1980-08-13 Protecting method for converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11027080A JPS5736580A (en) 1980-08-13 1980-08-13 Protecting method for converter

Publications (2)

Publication Number Publication Date
JPS5736580A true JPS5736580A (en) 1982-02-27
JPS631831B2 JPS631831B2 (en) 1988-01-14

Family

ID=14531421

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11027080A Granted JPS5736580A (en) 1980-08-13 1980-08-13 Protecting method for converter

Country Status (1)

Country Link
JP (1) JPS5736580A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046775A (en) * 1983-08-24 1985-03-13 Toshiba Corp Controlling method of power converter
JPS6046773A (en) * 1983-08-22 1985-03-13 Toshiba Corp Power converter
JPS60109770A (en) * 1983-11-18 1985-06-15 Hitachi Ltd Power converter
JPS6295973A (en) * 1985-10-21 1987-05-02 Toshiba Corp Power converter
JPS62230357A (en) * 1986-03-28 1987-10-09 Hitachi Ltd Controlling device for pwm power converter
JPH05236680A (en) * 1991-12-17 1993-09-10 Internatl Business Mach Corp <Ibm> N+1 power supply system
US6270003B1 (en) 1996-04-03 2001-08-07 Hirano Shiki Co., Ltd. Cake container

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101212512B1 (en) * 2002-08-21 2012-12-26 더 유니버시티 오브 브리티쉬 콜롬비아 - RNAi Probes Targeting Cancer-Related Proteins

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5251549A (en) * 1975-10-22 1977-04-25 Meidensha Electric Mfg Co Ltd Over voltage and over current suppression equipment for inverter
JPS5594583A (en) * 1979-01-10 1980-07-18 Hitachi Ltd Frequency converter and its controlling method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5251549A (en) * 1975-10-22 1977-04-25 Meidensha Electric Mfg Co Ltd Over voltage and over current suppression equipment for inverter
JPS5594583A (en) * 1979-01-10 1980-07-18 Hitachi Ltd Frequency converter and its controlling method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046773A (en) * 1983-08-22 1985-03-13 Toshiba Corp Power converter
JPH0419796B2 (en) * 1983-08-22 1992-03-31 Tokyo Shibaura Electric Co
JPS6046775A (en) * 1983-08-24 1985-03-13 Toshiba Corp Controlling method of power converter
JPH0332303B2 (en) * 1983-08-24 1991-05-10 Tokyo Shibaura Electric Co
JPS60109770A (en) * 1983-11-18 1985-06-15 Hitachi Ltd Power converter
JPS6295973A (en) * 1985-10-21 1987-05-02 Toshiba Corp Power converter
JPS62230357A (en) * 1986-03-28 1987-10-09 Hitachi Ltd Controlling device for pwm power converter
JPH05236680A (en) * 1991-12-17 1993-09-10 Internatl Business Mach Corp <Ibm> N+1 power supply system
US6270003B1 (en) 1996-04-03 2001-08-07 Hirano Shiki Co., Ltd. Cake container

Also Published As

Publication number Publication date
JPS631831B2 (en) 1988-01-14

Similar Documents

Publication Publication Date Title
KR940008951A (en) Electric vehicle controller
KR100270816B1 (en) Frequency converter device
SE7903658L (en) OVERFLOW PROTECTION DEVICE
CA2108073A1 (en) Single Transformer Switching Regulator
JPS5736580A (en) Protecting method for converter
JPS6439222A (en) Circuit breaker
JPS56107793A (en) Controlling method of inverter
DE3561659D1 (en) Inverter-fed drive for a lift
JPS5722386A (en) Inverter circuit
JPS5644385A (en) Controlling method of power converter
JPS56141797A (en) Protecting method of overcurrent in voltage type converter for induction motor drive
JPS57173378A (en) Operating method for inverter
JPS5530237A (en) Gate driver for gate turn-off thyristor
TW290753B (en) Battery charger
JPS56111922A (en) Power generation system
RU2050680C1 (en) Voltage regulating device
SU1265952A1 (en) Inverter system
JPS5773A (en) Converter circuit in inverter
JPS57132761A (en) Boosting chopper
JPS5653574A (en) Chopper type switching regulator
JPS5740361A (en) Pulse width moldulation type dc-dc converter
JPS5577392A (en) Controller for induction motor
JPS57155631A (en) Multioutput sequence circuit of switching regulator
JPS57184307A (en) Power supply voltage control type amplifier
JPS5759481A (en) Current type inverter