JPS5457617A - Control system ac motor - Google Patents

Control system ac motor

Info

Publication number
JPS5457617A
JPS5457617A JP12488877A JP12488877A JPS5457617A JP S5457617 A JPS5457617 A JP S5457617A JP 12488877 A JP12488877 A JP 12488877A JP 12488877 A JP12488877 A JP 12488877A JP S5457617 A JPS5457617 A JP S5457617A
Authority
JP
Japan
Prior art keywords
motor
torque
reliability
torque ripple
load
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
JP12488877A
Other languages
Japanese (ja)
Other versions
JPS6223560B2 (en
Inventor
Akio Hirata
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 JP12488877A priority Critical patent/JPS5457617A/en
Priority to BR7806854A priority patent/BR7806854A/en
Priority to AU40833/78A priority patent/AU527786B2/en
Priority to US05/952,385 priority patent/US4296367A/en
Publication of JPS5457617A publication Critical patent/JPS5457617A/en
Publication of JPS6223560B2 publication Critical patent/JPS6223560B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To promote an improvement of reliability for mechanical resonance phenomena, by providing a less torque ripple with a primary voltage curve set to a level lower than the rating of Ac motor.
CONSTITUTION: With a primary voltage curve, in a range of obtainable torque TM of an AC motor 13 becoming larger than a load torque TL, set to E1 smaller than the rated value V1/f1 of the AC motor, a higher harmonic torque generated in the AC main motor is reduced by a relation of T∞(V1/f1)2 (where T for generated torque of the AC motor), and a torque ripple will be made small even with a proportion of the higher harmonic component, included in an output voltage or current of the frequency converter, being the same as that in a conventional system. Consequently, in a load of the Ac motor, even with a relatively weak part present of mechanical strength, a less torque ripple will improve a reliability for mechanical resonance phenomena
COPYRIGHT: (C)1979,JPO&Japio
JP12488877A 1977-10-18 1977-10-18 Control system ac motor Granted JPS5457617A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP12488877A JPS5457617A (en) 1977-10-18 1977-10-18 Control system ac motor
BR7806854A BR7806854A (en) 1977-10-18 1978-10-17 PROCESS TO CONTROL THE SPEED OF AN AC-CURRENT ENGINE
AU40833/78A AU527786B2 (en) 1977-10-18 1978-10-18 A. c. motor speed control
US05/952,385 US4296367A (en) 1977-10-18 1978-10-18 Speed control method for AC motors and an apparatus for the control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12488877A JPS5457617A (en) 1977-10-18 1977-10-18 Control system ac motor

Publications (2)

Publication Number Publication Date
JPS5457617A true JPS5457617A (en) 1979-05-09
JPS6223560B2 JPS6223560B2 (en) 1987-05-23

Family

ID=14896569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12488877A Granted JPS5457617A (en) 1977-10-18 1977-10-18 Control system ac motor

Country Status (1)

Country Link
JP (1) JPS5457617A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59159687A (en) * 1983-02-28 1984-09-10 Hitachi Ltd Controlling method and device of pwm inverter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0431022Y2 (en) * 1985-09-20 1992-07-27

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59159687A (en) * 1983-02-28 1984-09-10 Hitachi Ltd Controlling method and device of pwm inverter
JPH044837B2 (en) * 1983-02-28 1992-01-29

Also Published As

Publication number Publication date
JPS6223560B2 (en) 1987-05-23

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