JPS55106094A - Method of controlling operation of synchronous motor - Google Patents
Method of controlling operation of synchronous motorInfo
- Publication number
- JPS55106094A JPS55106094A JP1223779A JP1223779A JPS55106094A JP S55106094 A JPS55106094 A JP S55106094A JP 1223779 A JP1223779 A JP 1223779A JP 1223779 A JP1223779 A JP 1223779A JP S55106094 A JPS55106094 A JP S55106094A
- Authority
- JP
- Japan
- Prior art keywords
- converter
- current
- transformer
- time
- synchronous 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.)
- Pending
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE: To prevent a thyristor from overheating at its current concentrating time by interposing a step-up transformer between a converter and a generator at its stationarily operating time, coupling the converter to the generator directly at its current concentrating time and reducing the output current of the converter.
CONSTITUTION: A converter 3 for converting a DC current obtained from a converter 1 to an AC current having predetermined frequency is connected through a step-up transformer 14 to a synchronous motor 4. When a current is concentrated due to deceleration of the speed, a change-over switch 15 of a transformer 14 is opened by a signal from an instructing circuit 17 connected to a speed detector 6, and a switch 16 is closed to apply the output of the converter 3 directly to the motor 4. On the other hand, the circuit 17 generates also a signal to a current limiter 18 to reduce the DC output current from the converter, for example, to 1/3 of that at the stationary time.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1223779A JPS55106094A (en) | 1979-02-07 | 1979-02-07 | Method of controlling operation of synchronous motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1223779A JPS55106094A (en) | 1979-02-07 | 1979-02-07 | Method of controlling operation of synchronous motor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55106094A true JPS55106094A (en) | 1980-08-14 |
Family
ID=11799754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1223779A Pending JPS55106094A (en) | 1979-02-07 | 1979-02-07 | Method of controlling operation of synchronous motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55106094A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6940249B2 (en) | 2002-09-04 | 2005-09-06 | Mitsubishi Denki Kabushiki Kaisha | Inverter device |
-
1979
- 1979-02-07 JP JP1223779A patent/JPS55106094A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6940249B2 (en) | 2002-09-04 | 2005-09-06 | Mitsubishi Denki Kabushiki Kaisha | Inverter device |
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