JPS5568897A - Detecting system for out of synchronization of synchronous motor - Google Patents
Detecting system for out of synchronization of synchronous motorInfo
- Publication number
- JPS5568897A JPS5568897A JP14166278A JP14166278A JPS5568897A JP S5568897 A JPS5568897 A JP S5568897A JP 14166278 A JP14166278 A JP 14166278A JP 14166278 A JP14166278 A JP 14166278A JP S5568897 A JPS5568897 A JP S5568897A
- Authority
- JP
- Japan
- Prior art keywords
- difference angle
- internal phase
- torque
- synchronization
- step out
- 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.)
- Pending
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE: To prevent erroneous detection and to correctly detect the step out by always monitoring the movement of internal phase-difference angle of a synchronous motor and detecting the step out when the variation of the phase-difference angle exceeds a specified value.
CONSTITUTION: An internal phase-difference angle δ, which is made of an N-pole formed by a field winding of a rotor pole 7 and an Spole which is the center of the rotating field of a stator b, increases with the increase in loads as the same phenomenon of braking the rotor. In the Figure illustrating the interrelationship of torque T and the internal phase-difference angle δ, the point on the solid line at the torque To and the internal phase-difference angle δo is increased to the point at the torque T1 and the internal phase-difference angle 90° with the increase in loads. If the torque is increased more, there is no intersection point, and the synchronization cannot be maintained. If the angle δ exceeds 90°, the STEP out is resulted.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14166278A JPS5568897A (en) | 1978-11-15 | 1978-11-15 | Detecting system for out of synchronization of synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14166278A JPS5568897A (en) | 1978-11-15 | 1978-11-15 | Detecting system for out of synchronization of synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5568897A true JPS5568897A (en) | 1980-05-23 |
Family
ID=15297248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14166278A Pending JPS5568897A (en) | 1978-11-15 | 1978-11-15 | Detecting system for out of synchronization of synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5568897A (en) |
-
1978
- 1978-11-15 JP JP14166278A patent/JPS5568897A/en active Pending
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