JPS5678391A - Multispeed controlling device of induction motor - Google Patents

Multispeed controlling device of induction motor

Info

Publication number
JPS5678391A
JPS5678391A JP15247179A JP15247179A JPS5678391A JP S5678391 A JPS5678391 A JP S5678391A JP 15247179 A JP15247179 A JP 15247179A JP 15247179 A JP15247179 A JP 15247179A JP S5678391 A JPS5678391 A JP S5678391A
Authority
JP
Japan
Prior art keywords
phase
output
supply
induction motor
frequency
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
JP15247179A
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 JP15247179A priority Critical patent/JPS5678391A/en
Publication of JPS5678391A publication Critical patent/JPS5678391A/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 obtain a variable speed operating system with a less loss and a superior characteristic by a method wherein a bi-lateral control rectifier arranged between a power supply and an electromotor is switch-controlled to in steps generate frequencies lower than a supply frequency. CONSTITUTION:A three-phase AC power supply 1 is led to a transformer 2 for 3- phase.6-phase conversion and each output of the transformer 2 is connected to bi- lateral elements TH respectively of a control rectifier 3, whereby the output is fed as input to a 3-phase induction motor 4 and also the respective thyristor elements TH are switch-controlled by a frequency setter 6 and a gate control circuit 5. Accordingly, each phase output of the 3-phase and each phase output of the antiphases thereof are changed over with a cycle of more than the supply cycle, whereby frequencies in a range of around the supply frequency to two times the supply frequency are obtained in steps to enable the electromotor 4 to be driven and the variable speed operation can efficiently by performed.
JP15247179A 1979-11-27 1979-11-27 Multispeed controlling device of induction motor Pending JPS5678391A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15247179A JPS5678391A (en) 1979-11-27 1979-11-27 Multispeed controlling device of induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15247179A JPS5678391A (en) 1979-11-27 1979-11-27 Multispeed controlling device of induction motor

Publications (1)

Publication Number Publication Date
JPS5678391A true JPS5678391A (en) 1981-06-27

Family

ID=15541234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15247179A Pending JPS5678391A (en) 1979-11-27 1979-11-27 Multispeed controlling device of induction motor

Country Status (1)

Country Link
JP (1) JPS5678391A (en)

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