JPS5778373A - Control circuit for current type three-phase inverter - Google Patents

Control circuit for current type three-phase inverter

Info

Publication number
JPS5778373A
JPS5778373A JP55154069A JP15406980A JPS5778373A JP S5778373 A JPS5778373 A JP S5778373A JP 55154069 A JP55154069 A JP 55154069A JP 15406980 A JP15406980 A JP 15406980A JP S5778373 A JPS5778373 A JP S5778373A
Authority
JP
Japan
Prior art keywords
phase
thyristors
current type
feeds
currents
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
JP55154069A
Other languages
Japanese (ja)
Inventor
Masayuki Terajima
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing 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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP55154069A priority Critical patent/JPS5778373A/en
Publication of JPS5778373A publication Critical patent/JPS5778373A/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

Abstract

PURPOSE:To feed a current of wave form approximate to a sine wave to a three- phase induction motor by a method wherein the commutation between thyristors is performed by odd times within the period 60 deg. when the current is switched from the optional phase to the next phase. CONSTITUTION:A PWM pattern generating section 13 feeds a trigger pulse to each gate of the thyristor of the current type three-phase inverter 1 through the intermediary of a gate amplifier 7 in such a manner that the currents ia, ib and ic of the output signal frequency of a voltage-frequency converter 6. Besides, the PWM pattern generating section 13 controls thyristors T1-T6, which feeds currents ia- ic of an optional phase among thyristors T1-T6 constituting the current type three- phase inverter 1, and the thyristors T1-T6 which feeds the currents ia-ic of the next phase in such a manner that they perform an odd-number commutation giving ON and OFF positions alternately within the period of 60 deg. at the end of an optical phase.
JP55154069A 1980-11-01 1980-11-01 Control circuit for current type three-phase inverter Pending JPS5778373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55154069A JPS5778373A (en) 1980-11-01 1980-11-01 Control circuit for current type three-phase inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55154069A JPS5778373A (en) 1980-11-01 1980-11-01 Control circuit for current type three-phase inverter

Publications (1)

Publication Number Publication Date
JPS5778373A true JPS5778373A (en) 1982-05-17

Family

ID=15576206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55154069A Pending JPS5778373A (en) 1980-11-01 1980-11-01 Control circuit for current type three-phase inverter

Country Status (1)

Country Link
JP (1) JPS5778373A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03251731A (en) * 1990-02-28 1991-11-11 Shimadzu Corp Positioning device of unbalance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03251731A (en) * 1990-02-28 1991-11-11 Shimadzu Corp Positioning device of unbalance

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