JPS5731376A - Protecting device for inverter - Google Patents

Protecting device for inverter

Info

Publication number
JPS5731376A
JPS5731376A JP10474180A JP10474180A JPS5731376A JP S5731376 A JPS5731376 A JP S5731376A JP 10474180 A JP10474180 A JP 10474180A JP 10474180 A JP10474180 A JP 10474180A JP S5731376 A JPS5731376 A JP S5731376A
Authority
JP
Japan
Prior art keywords
current
inverter
pulse output
load
pulse
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
JP10474180A
Other languages
Japanese (ja)
Inventor
Koji Awatani
Shigenori Kinoshita
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 JP10474180A priority Critical patent/JPS5731376A/en
Publication of JPS5731376A publication Critical patent/JPS5731376A/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
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
    • H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
    • H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
    • H02M5/443—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/45—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M5/4505—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only having a rectifier with controlled elements

Landscapes

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

Abstract

PURPOSE:To early prevent the fault, e.g., commutation failure caused by the interruption of a current, over voltage, etc. by providing load current detecting means flowing in a current type inverter and stopping the inverter when a load current becomes lower than the set value. CONSTITUTION:The thyristors U-Z, A1-D3 of a rectifier 2 and an inverter 4 connected to an AC power source 1 are driven by the pulses from pulse output circuits 3U-3Z, 5A1-5D3 connected to pulse generators 11, 12 to supply a current to a load 8. Since the inhibit gates 19U-19D3 are opened in the normally operating time, the pulses from distributors 18, 18 are inputted to pulse output circuits 3U- 5D3. When the load current detected by a current detector 21 becomes lower than the preset value, the minimum current detecting circuit 20 produces a pulse output to close the inhibit gates 19U-92D3 to set the inputs to the pulse generator 3U- 5D3 to zero and to stop the circuit 2 and the inverter 4 in operation.
JP10474180A 1980-07-29 1980-07-29 Protecting device for inverter Pending JPS5731376A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10474180A JPS5731376A (en) 1980-07-29 1980-07-29 Protecting device for inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10474180A JPS5731376A (en) 1980-07-29 1980-07-29 Protecting device for inverter

Publications (1)

Publication Number Publication Date
JPS5731376A true JPS5731376A (en) 1982-02-19

Family

ID=14388915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10474180A Pending JPS5731376A (en) 1980-07-29 1980-07-29 Protecting device for inverter

Country Status (1)

Country Link
JP (1) JPS5731376A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521840A (en) * 1983-02-14 1985-06-04 Borg-Warner Corporation D-C Bus current monitoring system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4521840A (en) * 1983-02-14 1985-06-04 Borg-Warner Corporation D-C Bus current monitoring system

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