JPS558251A - Method controlling operation of ac rotary machine - Google Patents
Method controlling operation of ac rotary machineInfo
- Publication number
- JPS558251A JPS558251A JP8035078A JP8035078A JPS558251A JP S558251 A JPS558251 A JP S558251A JP 8035078 A JP8035078 A JP 8035078A JP 8035078 A JP8035078 A JP 8035078A JP S558251 A JPS558251 A JP S558251A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- frequency
- circuit
- phase difference
- rotary machine
- 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
Abstract
PURPOSE: To prevent an AC rotary machine from abruptly accelerating or braking accelerating the machine until it coincides with the frequency of a second power supply by a first variable frequency power supply and starting the adjustment of the frequency and phase angle of the first power supply when both the phases become concident.
CONSTITUTION: An AC rotary machine M is accelerated via an oblique signal generator 2 and a voltage controlled oscillator 3 by a variable voltage variable frequency inverter 1. A phase difference detecting circuit 5 applies a signal proportional to the phase difference of the output voltages of the inverter 1 and a commercial frequency power supply 6 to an amplifier 4 in an automatic synchronization control circuit, and holds an internal memory at the instantaneout moment that the machine is completely accelerated by the holding circuit 7 so that the output of the circuit 5 becomes zero to thereby hold a relay K1 for the ampifier 4. Since the phase difference is zero at the moment that the circuit 5 is alive to produce no kick voltage due to the above reason, it can smoothen the frequency in variation when applying to the commercial power supply.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8035078A JPS558251A (en) | 1978-06-30 | 1978-06-30 | Method controlling operation of ac rotary machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8035078A JPS558251A (en) | 1978-06-30 | 1978-06-30 | Method controlling operation of ac rotary machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS558251A true JPS558251A (en) | 1980-01-21 |
JPS6159063B2 JPS6159063B2 (en) | 1986-12-15 |
Family
ID=13715801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8035078A Granted JPS558251A (en) | 1978-06-30 | 1978-06-30 | Method controlling operation of ac rotary machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS558251A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106130412A (en) * | 2016-06-30 | 2016-11-16 | 陕西科技大学 | A kind of AC frequency conversion soft starter with bypass functionality and control method thereof |
-
1978
- 1978-06-30 JP JP8035078A patent/JPS558251A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106130412A (en) * | 2016-06-30 | 2016-11-16 | 陕西科技大学 | A kind of AC frequency conversion soft starter with bypass functionality and control method thereof |
Also Published As
Publication number | Publication date |
---|---|
JPS6159063B2 (en) | 1986-12-15 |
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