JPS55157987A - Speed controlling device for ac motor - Google Patents

Speed controlling device for ac motor

Info

Publication number
JPS55157987A
JPS55157987A JP6590479A JP6590479A JPS55157987A JP S55157987 A JPS55157987 A JP S55157987A JP 6590479 A JP6590479 A JP 6590479A JP 6590479 A JP6590479 A JP 6590479A JP S55157987 A JPS55157987 A JP S55157987A
Authority
JP
Japan
Prior art keywords
switch
frequency
bus
voltage
frequency converter
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.)
Granted
Application number
JP6590479A
Other languages
Japanese (ja)
Other versions
JPS6127994B2 (en
Inventor
Hideo Ishibashi
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP6590479A priority Critical patent/JPS55157987A/en
Publication of JPS55157987A publication Critical patent/JPS55157987A/en
Publication of JPS6127994B2 publication Critical patent/JPS6127994B2/ja
Granted 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
    • H02P1/30—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 by progressive increase of frequency of supply to primary circuit of motor

Abstract

PURPOSE:To secure a phase contol quick in response which is not to impair stability of an AC motor system against fluctuation of an AC bus frequency by a method wherein frequency of an AC bus voltage is detected and then given to a frequency converter as a frequency command signal through a delay follow-up circuit. CONSTITUTION:When a change-over switch 3 and a switch 12 are closed, a speed command signal in proportional to a voltage of an AC bus 1 is given to a delay follow-up circuit 13 from a frequency detector 10. The delay follow-up circuit 13 gives an operation pattern to accelerate an AC motor 5 in optimal condition to a frequency converter 2. When the acceleration is over, a zero retaining switch 17 is opened, and a phase difference between an output voltage of the frequency converter 2 and a voltage of the AC bus 1 is given to the frequency converter 2 from a phase difference detector 15. Upon completion of synchronization, a switch 4 is closed and the change-over switch 3 and the switch 12 are opened.
JP6590479A 1979-05-28 1979-05-28 Speed controlling device for ac motor Granted JPS55157987A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6590479A JPS55157987A (en) 1979-05-28 1979-05-28 Speed controlling device for ac motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6590479A JPS55157987A (en) 1979-05-28 1979-05-28 Speed controlling device for ac motor

Publications (2)

Publication Number Publication Date
JPS55157987A true JPS55157987A (en) 1980-12-09
JPS6127994B2 JPS6127994B2 (en) 1986-06-27

Family

ID=13300407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6590479A Granted JPS55157987A (en) 1979-05-28 1979-05-28 Speed controlling device for ac motor

Country Status (1)

Country Link
JP (1) JPS55157987A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2005002039A1 (en) * 2003-06-26 2006-08-10 東芝三菱電機産業システム株式会社 Electric motor drive system
CN103227594A (en) * 2012-01-30 2013-07-31 Ls产电株式会社 Medium voltage inverter control apparatus and medium voltage inverter system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2005002039A1 (en) * 2003-06-26 2006-08-10 東芝三菱電機産業システム株式会社 Electric motor drive system
JP4489018B2 (en) * 2003-06-26 2010-06-23 東芝三菱電機産業システム株式会社 AC motor drive system
CN103227594A (en) * 2012-01-30 2013-07-31 Ls产电株式会社 Medium voltage inverter control apparatus and medium voltage inverter system
JP2013158238A (en) * 2012-01-30 2013-08-15 Ls Industrial Systems Co Ltd High voltage inverter control apparatus and high voltage inverter system
US9065352B2 (en) 2012-01-30 2015-06-23 Lsis Co., Ltd. Medium voltage inverter control apparatus and medium voltage inverter system

Also Published As

Publication number Publication date
JPS6127994B2 (en) 1986-06-27

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