JPS55100096A - Control system for induction motor - Google Patents

Control system for induction motor

Info

Publication number
JPS55100096A
JPS55100096A JP555879A JP555879A JPS55100096A JP S55100096 A JPS55100096 A JP S55100096A JP 555879 A JP555879 A JP 555879A JP 555879 A JP555879 A JP 555879A JP S55100096 A JPS55100096 A JP S55100096A
Authority
JP
Japan
Prior art keywords
current
motor
control
thyristor
detector
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
JP555879A
Other languages
Japanese (ja)
Inventor
Teruo Nakano
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 JP555879A priority Critical patent/JPS55100096A/en
Publication of JPS55100096A publication Critical patent/JPS55100096A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Motor And Converter Starters (AREA)

Abstract

PURPOSE: To supply the distortionless sine wave current to the motor after the acceleration is completed and to improve power factor by a method wherein the control rectification elements controlling the motor current are fully ignited when the motor current drops to the specified value or less.
CONSTITUTION: The phase controller 7 and the pulse amplifier 8 are controlled by the comparison between the signal from the current reference setter 3 and the signal from the current detector 5, and through this output, the control elements 2 in counter-parallel which control the supply current to the induction motor 1 are driven. In such a control system as this, is installed the level detector 9 which permits to fully ignite thyristor 2 through the phase controller 7 or the pulse amplifier 8 operated by the output signal generated when the output signal of the current detector 5 or the current control amplifier 6 attains the specified value. And after the acceleration of the motor is completed, the motor current decreases, therefore, by means of this phenomenon, the full ignition of the thyristor 2 is performed.
COPYRIGHT: (C)1980,JPO&Japio
JP555879A 1979-01-23 1979-01-23 Control system for induction motor Pending JPS55100096A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP555879A JPS55100096A (en) 1979-01-23 1979-01-23 Control system for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP555879A JPS55100096A (en) 1979-01-23 1979-01-23 Control system for induction motor

Publications (1)

Publication Number Publication Date
JPS55100096A true JPS55100096A (en) 1980-07-30

Family

ID=11614519

Family Applications (1)

Application Number Title Priority Date Filing Date
JP555879A Pending JPS55100096A (en) 1979-01-23 1979-01-23 Control system for induction motor

Country Status (1)

Country Link
JP (1) JPS55100096A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05252783A (en) * 1992-03-06 1993-09-28 Hitachi Koki Co Ltd Motor speed controller

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05252783A (en) * 1992-03-06 1993-09-28 Hitachi Koki Co Ltd Motor speed controller

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