JPS56112881A - Controlling device for frequency converter - Google Patents

Controlling device for frequency converter

Info

Publication number
JPS56112881A
JPS56112881A JP1365680A JP1365680A JPS56112881A JP S56112881 A JPS56112881 A JP S56112881A JP 1365680 A JP1365680 A JP 1365680A JP 1365680 A JP1365680 A JP 1365680A JP S56112881 A JPS56112881 A JP S56112881A
Authority
JP
Japan
Prior art keywords
inverter
gate
signal
converter
circuit
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
JP1365680A
Other languages
Japanese (ja)
Inventor
Mitsusachi Motobe
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 JP1365680A priority Critical patent/JPS56112881A/en
Publication of JPS56112881A publication Critical patent/JPS56112881A/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
    • H02M5/02—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 without intermediate conversion into dc
    • H02M5/04—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 without intermediate conversion into dc by static converters
    • H02M5/22—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 without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—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 without intermediate conversion into dc 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
    • H02M5/27—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 without intermediate conversion into dc 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 for conversion of frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ac-Ac Conversion (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To narrow a gate striking signal of an inverter part by detecting the presence or absence of the current of the inverter and by overlapping a gate striking signal for comparator on the gate striking signal for the inverter when the detected current is zero. CONSTITUTION:The power from an AC power source 1 is converted into DC power by a converter 2 and impressed on the inverter 4 to drive an induction motor 5. Moreover, the presence or absence of the current flowing through the inverter 4 is detected by a current transformer 70 and a comparing circuit 72 and the output C1 thereof and the negative signal C0 thereof are delivered to a logic circuit 75, while the total sum of the gate signals of a group of thyristors of the converter 2 is taken by an OR circuit 73 and delivered to the circuit 75. And, the gate signal of the inverter 4 and the gate signal of the converter 2 are overlapped and thereby a gate signal is supplied to the inverter 4. Accordingly, the gate signal of the inverter 4 can be narrowed and thereby the device can be miniaturized and simplified.
JP1365680A 1980-02-08 1980-02-08 Controlling device for frequency converter Pending JPS56112881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1365680A JPS56112881A (en) 1980-02-08 1980-02-08 Controlling device for frequency converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1365680A JPS56112881A (en) 1980-02-08 1980-02-08 Controlling device for frequency converter

Publications (1)

Publication Number Publication Date
JPS56112881A true JPS56112881A (en) 1981-09-05

Family

ID=11839245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1365680A Pending JPS56112881A (en) 1980-02-08 1980-02-08 Controlling device for frequency converter

Country Status (1)

Country Link
JP (1) JPS56112881A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05221544A (en) * 1992-08-28 1993-08-31 Sharp Corp Automatic paper feeding device
JP2008027861A (en) * 2006-07-25 2008-02-07 I-O Data Device Inc Male connector, female connector, and connector structure
JP2017112683A (en) * 2015-12-15 2017-06-22 東芝三菱電機産業システム株式会社 Power conversion system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5156929A (en) * 1974-11-13 1976-05-19 Fuji Electric Co Ltd

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5156929A (en) * 1974-11-13 1976-05-19 Fuji Electric Co Ltd

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05221544A (en) * 1992-08-28 1993-08-31 Sharp Corp Automatic paper feeding device
JP2601973B2 (en) * 1992-08-28 1997-04-23 シャープ株式会社 Automatic paper feeder
JP2008027861A (en) * 2006-07-25 2008-02-07 I-O Data Device Inc Male connector, female connector, and connector structure
JP2017112683A (en) * 2015-12-15 2017-06-22 東芝三菱電機産業システム株式会社 Power conversion system

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