JPS55153275A - Power converter - Google Patents

Power converter

Info

Publication number
JPS55153275A
JPS55153275A JP5906479A JP5906479A JPS55153275A JP S55153275 A JPS55153275 A JP S55153275A JP 5906479 A JP5906479 A JP 5906479A JP 5906479 A JP5906479 A JP 5906479A JP S55153275 A JPS55153275 A JP S55153275A
Authority
JP
Japan
Prior art keywords
parallel
inverters
sets
reactors
constitution
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
JP5906479A
Other languages
Japanese (ja)
Inventor
Masanori Miyazaki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5906479A priority Critical patent/JPS55153275A/en
Publication of JPS55153275A publication Critical patent/JPS55153275A/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

Landscapes

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

Abstract

PURPOSE:To make the operation over the broad frequency range possible by connecting two sets of power rectifiers, DC reactors and inverters in parallel and controlling the apparatus so as to coincide the commutation timing of both inverters. CONSTITUTION:Two sets of power rectifiers 2, reactors 3 and inverters 4 are connected in parallel. Depending on the operating conditions of an AC motor 5, two sets are used or only one set is used by switching. When the gate signal of the thyristor of each inverter 4 is applied at the same time, the individual commutation capacitors are connected in parallel, and the commutation capacitors are provided with the same effect as the increase in capacity. In this constitution, if a capacitor voltage becomes too large, parallel operation is employed; and if the output frequency is high, single operation is employed; thereby the optimum capacitor is selected and the operation is carried out.
JP5906479A 1979-05-16 1979-05-16 Power converter Pending JPS55153275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5906479A JPS55153275A (en) 1979-05-16 1979-05-16 Power converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5906479A JPS55153275A (en) 1979-05-16 1979-05-16 Power converter

Publications (1)

Publication Number Publication Date
JPS55153275A true JPS55153275A (en) 1980-11-29

Family

ID=13102534

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5906479A Pending JPS55153275A (en) 1979-05-16 1979-05-16 Power converter

Country Status (1)

Country Link
JP (1) JPS55153275A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61255386A (en) * 1985-05-09 1986-11-13 セイコーエプソン株式会社 Display unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61255386A (en) * 1985-05-09 1986-11-13 セイコーエプソン株式会社 Display unit

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