JPS5546895A - Control device for induction motor - Google Patents
Control device for induction motorInfo
- Publication number
- JPS5546895A JPS5546895A JP11875278A JP11875278A JPS5546895A JP S5546895 A JPS5546895 A JP S5546895A JP 11875278 A JP11875278 A JP 11875278A JP 11875278 A JP11875278 A JP 11875278A JP S5546895 A JPS5546895 A JP S5546895A
- Authority
- JP
- Japan
- Prior art keywords
- control
- voltage
- basic
- motor
- 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.)
- Granted
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE: To control a motor stably and at a constant power level, by controlling a voltage-power ratio constantly until the basic r.p.m. of a motor is reached, and by changing the type of control from the voltage control to the r.p.m. control.
CONSTITUTION: A speed instruction is given by a speed setting unit 3, and the r.p.m. of a motor 2 reaches the instructed speed after the time set by an acceleration and deceleration regulator 4. If the speed instruction indicates the r.p.m. below the basic r.p.m., limiting action of a voltage limiter 6 is not actuated, and the output voltage and frequency of an invertor are limited to the constant ratio resulted from the comparison of the speed-instruction signal and the output voltage V. If the speed instruction is set above the basic r.p.m., the voltage limiter initiates the limiting action, and the output voltage of the inverter becomes constant regardless of the instruction. In this constitution, since the constant V/F control is made up to the basic r.p.m. of the motor, and the control is changed from the voltage control to the r.p.m. control in the region beyond the basic r.p.m., the stable control and the constant-power control of a motor can be made.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53118752A JPS5828832B2 (en) | 1978-09-27 | 1978-09-27 | Induction motor control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53118752A JPS5828832B2 (en) | 1978-09-27 | 1978-09-27 | Induction motor control device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5546895A true JPS5546895A (en) | 1980-04-02 |
JPS5828832B2 JPS5828832B2 (en) | 1983-06-18 |
Family
ID=14744170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53118752A Expired JPS5828832B2 (en) | 1978-09-27 | 1978-09-27 | Induction motor control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5828832B2 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5031331A (en) * | 1973-05-15 | 1975-03-27 | ||
JPS5396111A (en) * | 1977-01-31 | 1978-08-23 | Mitsubishi Electric Corp | Induction motor control circuit for electric car |
-
1978
- 1978-09-27 JP JP53118752A patent/JPS5828832B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5031331A (en) * | 1973-05-15 | 1975-03-27 | ||
JPS5396111A (en) * | 1977-01-31 | 1978-08-23 | Mitsubishi Electric Corp | Induction motor control circuit for electric car |
Also Published As
Publication number | Publication date |
---|---|
JPS5828832B2 (en) | 1983-06-18 |
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