JPS5674096A - Multistage speed control device for induction motor - Google Patents

Multistage speed control device for induction motor

Info

Publication number
JPS5674096A
JPS5674096A JP15003679A JP15003679A JPS5674096A JP S5674096 A JPS5674096 A JP S5674096A JP 15003679 A JP15003679 A JP 15003679A JP 15003679 A JP15003679 A JP 15003679A JP S5674096 A JPS5674096 A JP S5674096A
Authority
JP
Japan
Prior art keywords
power source
phase
frequency
outputs
induction motor
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
JP15003679A
Other languages
Japanese (ja)
Inventor
Yoshiharu Nakazawa
Fujio Ishikawa
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 JP15003679A priority Critical patent/JPS5674096A/en
Publication of JPS5674096A publication Critical patent/JPS5674096A/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
    • H02P27/06—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 using DC to AC converters or inverters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To enable control of speeds of the induction motor in multiple stages by reducing stepwisely the frequency from the vicinity of the power source frequency to the one- half thereof with 6-phase power source and bidirectional controlled rectifier. CONSTITUTION:A set of bidirectional controlled rectifiers 3 are connected to a transformer 2 for converting the AC power source 1 into 6-phase power source. 3- phase outputs of 2pi/3 phase difference of the outputs of the transformer and the 3- phase outputs of the reverse phases thereof are converted through the rectifiers 3 at a period higher than the twice the period of the power source. The converting control phase revolution of the bidirectional controller is inverted from the power source phase revolution, thereby obtaining the stepwise frequencies from the vicinity of the power source frequency to the one-half of the power frequency and thereby controlling the operation of the motor. Since the controlled rectifiers are switched and controlled at the zero points of the respective phases in this manner, it does not require specific commutating circuit.
JP15003679A 1979-11-21 1979-11-21 Multistage speed control device for induction motor Pending JPS5674096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15003679A JPS5674096A (en) 1979-11-21 1979-11-21 Multistage speed control device for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15003679A JPS5674096A (en) 1979-11-21 1979-11-21 Multistage speed control device for induction motor

Publications (1)

Publication Number Publication Date
JPS5674096A true JPS5674096A (en) 1981-06-19

Family

ID=15488090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15003679A Pending JPS5674096A (en) 1979-11-21 1979-11-21 Multistage speed control device for induction motor

Country Status (1)

Country Link
JP (1) JPS5674096A (en)

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