JPS55150787A - Ac motor starting method - Google Patents

Ac motor starting method

Info

Publication number
JPS55150787A
JPS55150787A JP5650479A JP5650479A JPS55150787A JP S55150787 A JPS55150787 A JP S55150787A JP 5650479 A JP5650479 A JP 5650479A JP 5650479 A JP5650479 A JP 5650479A JP S55150787 A JPS55150787 A JP S55150787A
Authority
JP
Japan
Prior art keywords
motor
power source
revolution
vvvf
system power
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
JP5650479A
Other languages
Japanese (ja)
Inventor
Shoji Sako
Hidetoshi Watabe
Yukio Todoroki
Kimihiro Yanagihara
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.)
JFE Steel Corp
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Kawasaki Steel Corp
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 Mitsubishi Electric Corp, Kawasaki Steel Corp filed Critical Mitsubishi Electric Corp
Priority to JP5650479A priority Critical patent/JPS55150787A/en
Publication of JPS55150787A publication Critical patent/JPS55150787A/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
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

PURPOSE:To reduce capacity of power source, by making it possible to start an electric motor with a system power source, and then, separate the system power source from the motor so as to let the motor's revolution return to a variable frequency power source during natural deceleration of the motor, and start the power source by the motor's revolution. CONSTITUTION:After an AC motor 5 was started by system power source 1 and 2, the system power sources are separated from the motor. And then, revolution of the motor is detected by a detector 12, and a variable voltage variable frequency power source (VVVF) 4 is started through a switchover switch 13, an inclination signal generator 9, a pattern generator 10 and an oscillator 11. And when agreement between revolution of the motor 5 and frequency of the VVVF power source 4 is detected, the motor 5 and the VVVF power source 4 are connected to each other. And then, by switching the switchover switch 13, the motor is controlled by a prescribed speed command 8.
JP5650479A 1979-05-09 1979-05-09 Ac motor starting method Pending JPS55150787A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5650479A JPS55150787A (en) 1979-05-09 1979-05-09 Ac motor starting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5650479A JPS55150787A (en) 1979-05-09 1979-05-09 Ac motor starting method

Publications (1)

Publication Number Publication Date
JPS55150787A true JPS55150787A (en) 1980-11-22

Family

ID=13028940

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5650479A Pending JPS55150787A (en) 1979-05-09 1979-05-09 Ac motor starting method

Country Status (1)

Country Link
JP (1) JPS55150787A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107872172A (en) * 2017-10-09 2018-04-03 广东明阳龙源电力电子有限公司 A kind of startup method of closed loop and the motor of V/F controls under MMC frequency converters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107872172A (en) * 2017-10-09 2018-04-03 广东明阳龙源电力电子有限公司 A kind of startup method of closed loop and the motor of V/F controls under MMC frequency converters
CN107872172B (en) * 2017-10-09 2020-10-23 广东明阳龙源电力电子有限公司 Starting method of closed-loop and V/F controlled motor under MMC frequency converter

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