FR2419606A1 - Pulse-width-modulated static inverter - has fault detecting system for input overvoltages etc. and initiating given shut-down operations at specified times - Google Patents

Pulse-width-modulated static inverter - has fault detecting system for input overvoltages etc. and initiating given shut-down operations at specified times

Info

Publication number
FR2419606A1
FR2419606A1 FR7905646A FR7905646A FR2419606A1 FR 2419606 A1 FR2419606 A1 FR 2419606A1 FR 7905646 A FR7905646 A FR 7905646A FR 7905646 A FR7905646 A FR 7905646A FR 2419606 A1 FR2419606 A1 FR 2419606A1
Authority
FR
France
Prior art keywords
inverter
initiating
pulse
width
detecting system
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.)
Withdrawn
Application number
FR7905646A
Other languages
French (fr)
Inventor
Nobuyoshi Muto
Yasuo Matsuda
Kazuo Honda
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
Publication of FR2419606A1 publication Critical patent/FR2419606A1/en
Withdrawn legal-status Critical Current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
    • H02M7/505—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 using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/515—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 using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/525—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 using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency
    • H02M7/527—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 using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output waveform or frequency by pulse width modulation

Landscapes

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

Abstract

The static inverter is controlled by a modulated signal obtained by comparing a modulating wave with a carrier wave. A fault detector detects at least one fault e.g. overcurrent and overvoltage at the inverter's input. A limiter reduces the modulating wave's voltage level to zero when one of the faults occurs at a specified point in time and also disconnects all gate signals to the inverter's thyristors. Two or more thyristors suppress the commutating operations on the three conducting thyristors at a second specified point in time. The appearance of a fault signal resets the inverter ready for a soft start when the fault signal disappears.
FR7905646A 1978-03-06 1979-03-05 Pulse-width-modulated static inverter - has fault detecting system for input overvoltages etc. and initiating given shut-down operations at specified times Withdrawn FR2419606A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2451978A JPS54118528A (en) 1978-03-06 1978-03-06 Pulse width modulation inverter

Publications (1)

Publication Number Publication Date
FR2419606A1 true FR2419606A1 (en) 1979-10-05

Family

ID=12140408

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7905646A Withdrawn FR2419606A1 (en) 1978-03-06 1979-03-05 Pulse-width-modulated static inverter - has fault detecting system for input overvoltages etc. and initiating given shut-down operations at specified times

Country Status (3)

Country Link
JP (1) JPS54118528A (en)
DE (1) DE2908512A1 (en)
FR (1) FR2419606A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062348A2 (en) * 1981-04-08 1982-10-13 Hitachi, Ltd. Method of halting a pulse width modulation inverter
EP0140348A1 (en) * 1983-10-28 1985-05-08 Hitachi, Ltd. Method and apparatus for controlling PWM inverter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59110380A (en) * 1982-12-14 1984-06-26 Mitsubishi Electric Corp Inverter modulation system
JP2552157Y2 (en) * 1992-03-13 1997-10-27 株式会社大東バルブ製作所 valve
JP6757112B2 (en) * 2014-01-17 2020-09-16 株式会社日立産機システム Power converter and state determination method of power converter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU53288A1 (en) * 1966-03-29 1968-11-29
US3886433A (en) * 1972-08-12 1975-05-27 Hitachi Ltd Converter control system with tapped transformer providing constant no-load secondary voltage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU53288A1 (en) * 1966-03-29 1968-11-29
US3886433A (en) * 1972-08-12 1975-05-27 Hitachi Ltd Converter control system with tapped transformer providing constant no-load secondary voltage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0062348A2 (en) * 1981-04-08 1982-10-13 Hitachi, Ltd. Method of halting a pulse width modulation inverter
EP0062348A3 (en) * 1981-04-08 1983-06-22 Hitachi, Ltd. Pulse width modulation inverter
EP0140348A1 (en) * 1983-10-28 1985-05-08 Hitachi, Ltd. Method and apparatus for controlling PWM inverter

Also Published As

Publication number Publication date
JPS54118528A (en) 1979-09-14
DE2908512A1 (en) 1979-09-20

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Legal Events

Date Code Title Description
ST Notification of lapse