JPS5523722A - Controller for induction motor - Google Patents
Controller for induction motorInfo
- Publication number
- JPS5523722A JPS5523722A JP9329678A JP9329678A JPS5523722A JP S5523722 A JPS5523722 A JP S5523722A JP 9329678 A JP9329678 A JP 9329678A JP 9329678 A JP9329678 A JP 9329678A JP S5523722 A JPS5523722 A JP S5523722A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- speed
- comparator
- motor
- induction motor
- 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 reduce the rise in the primary voltage of an induction motor, by using a prescribed function generator when performing the constant-output filed weakening control of the motor.
CONSTITUTION: The output signal ωr of a rotational frequency detector 4 and a speed reference signal 7 are applied to a comparator 8 to produce a difference signal. The difference signal is supplied to an inverter 1 through a speed controller 9, a primary current instantaneous reference calculation circuit 18, a current refernce signal calculation circuit 19 and a phase conversion circuit 20. The speed of the induction motor 2 is regulated by a control signal supplied from the inverter. A comparator 16 which subtracts the output of an automatic field weakening control circuit and a calculated magnetic flux value ϕ2 from a field strengthening reference 15 and supplies a difference signal to a magnetic flux control circuit 17, a function genetator 22 which produces a prescribed function, multipliers 11, 21 and another comparator 13 are used to control the field system of the motor. When the speed of the induction motor rises to a ground level (angular velocity ωr=1), a field control signal is applied to the comparator 13 to reduce the rise in the speed of the motor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9329678A JPS5523722A (en) | 1978-07-31 | 1978-07-31 | Controller for induction motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9329678A JPS5523722A (en) | 1978-07-31 | 1978-07-31 | Controller for induction motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5523722A true JPS5523722A (en) | 1980-02-20 |
JPS6212754B2 JPS6212754B2 (en) | 1987-03-20 |
Family
ID=14078397
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9329678A Granted JPS5523722A (en) | 1978-07-31 | 1978-07-31 | Controller for induction motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5523722A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6334101A (en) * | 1986-07-29 | 1988-02-13 | 株式会社名南製作所 | Tenderizing device for veneer |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5313127A (en) * | 1976-07-22 | 1978-02-06 | Toshiba Corp | Controller for induction motor |
-
1978
- 1978-07-31 JP JP9329678A patent/JPS5523722A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5313127A (en) * | 1976-07-22 | 1978-02-06 | Toshiba Corp | Controller for induction motor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6334101A (en) * | 1986-07-29 | 1988-02-13 | 株式会社名南製作所 | Tenderizing device for veneer |
Also Published As
Publication number | Publication date |
---|---|
JPS6212754B2 (en) | 1987-03-20 |
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