JPS5497721A - Step-out detector - Google Patents
Step-out detectorInfo
- Publication number
- JPS5497721A JPS5497721A JP421278A JP421278A JPS5497721A JP S5497721 A JPS5497721 A JP S5497721A JP 421278 A JP421278 A JP 421278A JP 421278 A JP421278 A JP 421278A JP S5497721 A JPS5497721 A JP S5497721A
- Authority
- JP
- Japan
- Prior art keywords
- generator
- motor
- rectangular wave
- differenciating
- outputed
- 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
- Protection Of Generators And Motors (AREA)
- Motor And Converter Starters (AREA)
Abstract
PURPOSE: To enable reliable detection of step-out by performing the detection of the step-out on the basis of rectangular wave corresponding to two times of electric angle for determining to be step-out from the pulse obtained in accordance with the rotation of the generator and the motor.
CONSTITUTION: Upon the rotation of morot G and generator M, pulses having width corresponding to 90° of the electric angle are supplied from the projection detectors 7, 9 and converted by frequency dividers 12, 13 and 14, 15 into rectangular waves having width corresponding to 360° of electric angle. When the generator G is synchronised with the motor M, there is phase difference of 180° between the differenciating pulse produced at the rising of rectangular wave outputed from frequency dividing circuit 15 and the rectangular wave outputed from frequncy dividing circuit 13 thereby relay 19 doesn't function. When the motor M steps out to shift the motor M more than 180° from the generator G, the differenciating pulse from the differenciating circuit 16 is overlapped with the rectangular wave outputed from the frequency dividing circuit 13, to set the flipflop circuit 18 thus to function the relay 19.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP421278A JPS5497721A (en) | 1978-01-20 | 1978-01-20 | Step-out detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP421278A JPS5497721A (en) | 1978-01-20 | 1978-01-20 | Step-out detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5497721A true JPS5497721A (en) | 1979-08-02 |
Family
ID=11578309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP421278A Pending JPS5497721A (en) | 1978-01-20 | 1978-01-20 | Step-out detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5497721A (en) |
-
1978
- 1978-01-20 JP JP421278A patent/JPS5497721A/en active Pending
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