JPS5592591A - Controller for operation of induction motor - Google Patents
Controller for operation of induction motorInfo
- Publication number
- JPS5592591A JPS5592591A JP16413678A JP16413678A JPS5592591A JP S5592591 A JPS5592591 A JP S5592591A JP 16413678 A JP16413678 A JP 16413678A JP 16413678 A JP16413678 A JP 16413678A JP S5592591 A JPS5592591 A JP S5592591A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- induction motor
- slip frequency
- speed
- output
- 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 operate an induction motor stably when the motor rotates at a low speed by a system wherein the induction motor is driven by means of a pulse width modulation type inverter while a clamp circuit for clamping slip frequency instruction signals is mounted to the control system.
CONSTITUTION: Instruction speed and actual speed are compared and supplied to a slip frequency instruction signal generator 7, and the output passes through a clamp circuit 21 clamped by means of a slip frequency set circuit 23, is added to the acutal speed and is given to a pulse width modulation circuit 16 through a V-F converter 10. Meanwhile, comparison signals are transmitted to a multiplying circuit 14 through a limiter circuit 13, and the output is composed with the output of the converter 10 by means of a composite circuit 15. Consequently, operation in case of low speeds can be stabilized while slip frequency instruction signals are clamped, thus softening impact force in case of the orientation of a machine tool, then optimally controlling an induction motor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53164136A JPS5930039B2 (en) | 1978-12-30 | 1978-12-30 | Induction motor operation control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53164136A JPS5930039B2 (en) | 1978-12-30 | 1978-12-30 | Induction motor operation control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5592591A true JPS5592591A (en) | 1980-07-14 |
JPS5930039B2 JPS5930039B2 (en) | 1984-07-24 |
Family
ID=15787422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53164136A Expired JPS5930039B2 (en) | 1978-12-30 | 1978-12-30 | Induction motor operation control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5930039B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0246273U (en) * | 1988-09-21 | 1990-03-29 |
-
1978
- 1978-12-30 JP JP53164136A patent/JPS5930039B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5930039B2 (en) | 1984-07-24 |
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