JPS56166793A - Variable speed driving method for induction motor - Google Patents

Variable speed driving method for induction motor

Info

Publication number
JPS56166793A
JPS56166793A JP6961780A JP6961780A JPS56166793A JP S56166793 A JPS56166793 A JP S56166793A JP 6961780 A JP6961780 A JP 6961780A JP 6961780 A JP6961780 A JP 6961780A JP S56166793 A JPS56166793 A JP S56166793A
Authority
JP
Japan
Prior art keywords
phase
microcomputer
alternating current
variable speed
frequency output
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
JP6961780A
Other languages
Japanese (ja)
Inventor
Makoto Fukuyama
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.)
Toyo Electric Manufacturing Ltd
Original Assignee
Toyo Electric Manufacturing 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 Toyo Electric Manufacturing Ltd filed Critical Toyo Electric Manufacturing Ltd
Priority to JP6961780A priority Critical patent/JPS56166793A/en
Publication of JPS56166793A publication Critical patent/JPS56166793A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage

Abstract

PURPOSE:To enable the smooth drive in variable speed on an induction motor by controlling by switching the phases of 3-phase obtained for a controlled rectifying circuit and the phases of the reverse phase to the 3-phase by a microcomputer and obtaining stepwisely the frequency output. CONSTITUTION:3-Phase alternating current is converted through a 6-phase transformer 2 into 6-phase alternating current, elements THU-THW forming a controlled rectifying circuit 3 are connected to the respective phase outputs of the 3-phase of 2pi/3 phase difference of the 6-phase alternating current, elements THU1-THW1 are respectively connected to the phase outputs of the reverse phase, and further the reverse phase currents are connected to each other. The circuit 3 is controlled to be switched by selecting a pattern memory of a microcomputer by a controlling circuit 5 having the microcomputer to generate a stepwise low frequency output lower than the power frequency, and the low frequency output is supplied to a motor 4.
JP6961780A 1980-05-27 1980-05-27 Variable speed driving method for induction motor Pending JPS56166793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6961780A JPS56166793A (en) 1980-05-27 1980-05-27 Variable speed driving method for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6961780A JPS56166793A (en) 1980-05-27 1980-05-27 Variable speed driving method for induction motor

Publications (1)

Publication Number Publication Date
JPS56166793A true JPS56166793A (en) 1981-12-22

Family

ID=13407996

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6961780A Pending JPS56166793A (en) 1980-05-27 1980-05-27 Variable speed driving method for induction motor

Country Status (1)

Country Link
JP (1) JPS56166793A (en)

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