JPS57116596A - Operating device for ac motor - Google Patents

Operating device for ac motor

Info

Publication number
JPS57116596A
JPS57116596A JP56001172A JP117281A JPS57116596A JP S57116596 A JPS57116596 A JP S57116596A JP 56001172 A JP56001172 A JP 56001172A JP 117281 A JP117281 A JP 117281A JP S57116596 A JPS57116596 A JP S57116596A
Authority
JP
Japan
Prior art keywords
motor
contactor
multiplexed
closed
accelerated
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
JP56001172A
Other languages
Japanese (ja)
Inventor
Hideo Ukata
Yuji Akiyama
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 JP56001172A priority Critical patent/JPS57116596A/en
Publication of JPS57116596A publication Critical patent/JPS57116596A/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
    • H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
    • H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors

Abstract

PURPOSE:To reduce the capacity of the operating device for an AC motor by utilizing the output of multiplexed inverter which drives the motor controlled for its continuous rotation when the motor operated at a low speed via nonmultiplexed inverter at a normal time is accelerated. CONSTITUTION:Electromagnetic contactors 5, 6 are closed at normal time. A motor 3 is controlled at its rotating speed via a multiplexed variable voltage and variable frequency power source (multiplexed VVVF)1, and a motor 4 is operated at a standby position at a low speed so as not to wear the bearing via nonmultiplexed VVVF2. When the output of the motor 3 becomes approximately allowable value and it becomes necessary to use the output of the motor 4, the motor 3 is accelerated, a contactor 7 is then closed to switch to a line power source. Then, the contactor 6 is opened, and a contactor 8 is closed. The motor 4 is connected to the multiplexed VVVF1 and is accelerated. Then, a contactor 9 is closed and is connected to the line power source.
JP56001172A 1981-01-09 1981-01-09 Operating device for ac motor Pending JPS57116596A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56001172A JPS57116596A (en) 1981-01-09 1981-01-09 Operating device for ac motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56001172A JPS57116596A (en) 1981-01-09 1981-01-09 Operating device for ac motor

Publications (1)

Publication Number Publication Date
JPS57116596A true JPS57116596A (en) 1982-07-20

Family

ID=11494007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56001172A Pending JPS57116596A (en) 1981-01-09 1981-01-09 Operating device for ac motor

Country Status (1)

Country Link
JP (1) JPS57116596A (en)

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