JPS5457617A - Control system ac motor - Google Patents
Control system ac motorInfo
- 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
Links
Landscapes
- Control Of Ac Motors In General (AREA)
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
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0431022Y2 (en) * | 1985-09-20 | 1992-07-27 |
-
1977
- 1977-10-18 JP JP12488877A patent/JPS5457617A/en active Granted
Cited By (2)
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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