JPS57199475A - Protective device for inverter - Google Patents

Protective device for inverter

Info

Publication number
JPS57199475A
JPS57199475A JP56084152A JP8415281A JPS57199475A JP S57199475 A JPS57199475 A JP S57199475A JP 56084152 A JP56084152 A JP 56084152A JP 8415281 A JP8415281 A JP 8415281A JP S57199475 A JPS57199475 A JP S57199475A
Authority
JP
Japan
Prior art keywords
inverter
constitution
predetermined value
current
trouble
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
JP56084152A
Other languages
Japanese (ja)
Inventor
Tetsuo Morikawa
Takao Kawabata
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56084152A priority Critical patent/JPS57199475A/en
Publication of JPS57199475A publication Critical patent/JPS57199475A/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

Landscapes

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

Abstract

PURPOSE:To protect an inverter device by connecting a current detector in series with one of capacitors connected in parallel and stopping the operation of the inverter when detecting currents reach predetermined value or higher. CONSTITUTION:When either of the electrolytic capacitor 3a or 3b is short- circuited and gets trouble at t0 time, currents flow through a current transformer 8, the detecting value of the current tansformer 8 exceeds the predetermined value Vr2 at t1 time and an operational amplifier 12 is operated, and stopping signals are transmitted to the inverter 4. Accordingly, the short circuit and trouble of the electrolytic capacitors 3a, 3b are rapidly detected by constitution changed into fuse-less form, and the inverter is protected.
JP56084152A 1981-05-29 1981-05-29 Protective device for inverter Pending JPS57199475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56084152A JPS57199475A (en) 1981-05-29 1981-05-29 Protective device for inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56084152A JPS57199475A (en) 1981-05-29 1981-05-29 Protective device for inverter

Publications (1)

Publication Number Publication Date
JPS57199475A true JPS57199475A (en) 1982-12-07

Family

ID=13822525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56084152A Pending JPS57199475A (en) 1981-05-29 1981-05-29 Protective device for inverter

Country Status (1)

Country Link
JP (1) JPS57199475A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6419915A (en) * 1987-07-13 1989-01-24 Shinko Electric Co Ltd Inverter overcurrent detection method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454231A (en) * 1977-10-07 1979-04-28 Fuji Electric Co Ltd Protective circuit for voltage type inverter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5454231A (en) * 1977-10-07 1979-04-28 Fuji Electric Co Ltd Protective circuit for voltage type inverter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6419915A (en) * 1987-07-13 1989-01-24 Shinko Electric Co Ltd Inverter overcurrent detection method

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