JPS6443089A - Speed control device for induction motor - Google Patents

Speed control device for induction motor

Info

Publication number
JPS6443089A
JPS6443089A JP62197044A JP19704487A JPS6443089A JP S6443089 A JPS6443089 A JP S6443089A JP 62197044 A JP62197044 A JP 62197044A JP 19704487 A JP19704487 A JP 19704487A JP S6443089 A JPS6443089 A JP S6443089A
Authority
JP
Japan
Prior art keywords
rotating speed
deviation
slip frequency
command current
speed
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
JP62197044A
Other languages
Japanese (ja)
Inventor
Shoji Sugiyama
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.)
Toyota Industries Corp
Original Assignee
Toyoda Automatic Loom Works 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 Toyoda Automatic Loom Works Ltd filed Critical Toyoda Automatic Loom Works Ltd
Priority to JP62197044A priority Critical patent/JPS6443089A/en
Publication of JPS6443089A publication Critical patent/JPS6443089A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To suppress torque pulsation produced in acceleration or deceleration and to improve the accelerating and decelerating characteristics, by setting up the instantaneous value current of each phase as a command current when a motor is at a rotating speed based on its speed command value depending on the speed deviation. CONSTITUTION:A command current setting circuit 21 is composed of a subtractor 21a, a slip frequency setter 21b and a command current operation section 21c. The subtractor 21a finds the deviation between a rotating command value f'm from a rotating speed setter 22 and a rotating speed fm from a rotating speed detector 5, i.e. the deviation of the rotating speed fm (f'm-fm). The slip frequency setter 21b sets a slip frequency fs based on the deviation fm. With the command current operation section 21c based on the slip frequency fs and rotating speed fm the instantaneous currents for two phases ia and ib are found by operation.
JP62197044A 1987-08-05 1987-08-05 Speed control device for induction motor Pending JPS6443089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62197044A JPS6443089A (en) 1987-08-05 1987-08-05 Speed control device for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62197044A JPS6443089A (en) 1987-08-05 1987-08-05 Speed control device for induction motor

Publications (1)

Publication Number Publication Date
JPS6443089A true JPS6443089A (en) 1989-02-15

Family

ID=16367784

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62197044A Pending JPS6443089A (en) 1987-08-05 1987-08-05 Speed control device for induction motor

Country Status (1)

Country Link
JP (1) JPS6443089A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009005440A (en) * 2007-06-19 2009-01-08 Hitachi Industrial Equipment Systems Co Ltd Induction motor driving device, motor driving system, and elevator system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879489A (en) * 1981-11-04 1983-05-13 Fanuc Ltd Control system for ac motor
JPS59103588A (en) * 1982-12-01 1984-06-15 Hitachi Ltd Controller for induction motor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5879489A (en) * 1981-11-04 1983-05-13 Fanuc Ltd Control system for ac motor
JPS59103588A (en) * 1982-12-01 1984-06-15 Hitachi Ltd Controller for induction motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009005440A (en) * 2007-06-19 2009-01-08 Hitachi Industrial Equipment Systems Co Ltd Induction motor driving device, motor driving system, and elevator system

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