JPS5517270A - Starting system for ac motor - Google Patents
Starting system for ac motorInfo
- Publication number
- JPS5517270A JPS5517270A JP8997078A JP8997078A JPS5517270A JP S5517270 A JPS5517270 A JP S5517270A JP 8997078 A JP8997078 A JP 8997078A JP 8997078 A JP8997078 A JP 8997078A JP S5517270 A JPS5517270 A JP S5517270A
- Authority
- JP
- Japan
- Prior art keywords
- frequency
- speed
- system bus
- speed control
- rotating 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
- Motor And Converter Starters (AREA)
Abstract
PURPOSE: To provide a starting device of a minimum capacity by minimizing the operating time of a linear speed control circuit regardless of frequency fluctuation of the bus by setting a rotating speed to start the revolving speed control with a rated frequency on an ac-system bus.
CONSTITUTION: A frequency on an ac system bus 11 is detected by a frequency fluctuation detector 28 and this frequency fluctuating signal is combined with a speed reference signal 211 and an arithmetic counter 212 and applied to a speed controller 23 and speed comparator 26 to establish a variable control for the rotating speed to start the variable speed control. Whereby, if the frequency of the ac- system bus 11 is lowered by 10 percent, the rotating speed to start the revolving speed control also is reduced by 10 percent, therefore, the capacity of the starting device is minimized.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8997078A JPS5517270A (en) | 1978-07-25 | 1978-07-25 | Starting system for ac motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8997078A JPS5517270A (en) | 1978-07-25 | 1978-07-25 | Starting system for ac motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5517270A true JPS5517270A (en) | 1980-02-06 |
JPS6135792B2 JPS6135792B2 (en) | 1986-08-14 |
Family
ID=13985531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8997078A Granted JPS5517270A (en) | 1978-07-25 | 1978-07-25 | Starting system for ac motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5517270A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59101068U (en) * | 1982-12-27 | 1984-07-07 | 株式会社ダイワ | Automatic gas stop device that detects earthquakes and gas leaks and closes the flow path |
JPS59153477A (en) * | 1983-02-22 | 1984-09-01 | Toshiba Corp | Controller for synchronous motor |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6284994A (en) * | 1985-10-07 | 1987-04-18 | 中小企業事業団 | Cutter |
JP2020116457A (en) * | 2020-05-12 | 2020-08-06 | 株式会社ユニバーサルエンターテインメント | Game machine |
JP2020116456A (en) * | 2020-05-12 | 2020-08-06 | 株式会社ユニバーサルエンターテインメント | Game machine |
-
1978
- 1978-07-25 JP JP8997078A patent/JPS5517270A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59101068U (en) * | 1982-12-27 | 1984-07-07 | 株式会社ダイワ | Automatic gas stop device that detects earthquakes and gas leaks and closes the flow path |
JPS59153477A (en) * | 1983-02-22 | 1984-09-01 | Toshiba Corp | Controller for synchronous motor |
JPH0158759B2 (en) * | 1983-02-22 | 1989-12-13 | Tokyo Shibaura Electric Co |
Also Published As
Publication number | Publication date |
---|---|
JPS6135792B2 (en) | 1986-08-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5517270A (en) | Starting system for ac motor | |
JPS5250519A (en) | Frequency convertor | |
JPS564377A (en) | Method and device for arc welding | |
JPS5243926A (en) | Velocity control device of brushless motor | |
JPS558260A (en) | Method of and device for controlling rotating speed of fan motor | |
JPS5429015A (en) | Controller for synchronous motor | |
JPS5352913A (en) | Sensitivity adjustment for servoed speed control | |
JPS5592595A (en) | Driving gear for synchronous motor | |
JPS54110421A (en) | Chopper controller | |
JPS5485316A (en) | Commutatorless motor | |
JPS5579699A (en) | Speed controller for squirrel-cage induction motor | |
JPS5475708A (en) | Device for controlling electric motor vehicle | |
JPS55157987A (en) | Speed controlling device for ac motor | |
JPS5517256A (en) | Starting system for wound-rotor type induction motor | |
JPS53132730A (en) | Operation monitoring system for ac motor | |
JPS5352912A (en) | Sensitivity adjustment for servoed speed control | |
JPS5219221A (en) | Speed control apparatus for induction motors | |
JPS5563590A (en) | Variable speed electric motor | |
JPS54106762A (en) | Winding diameter detector | |
JPS5592913A (en) | Starting method of synchronous rotary phase modifier of axial generating set for shipping | |
JPS5293175A (en) | Rotation speed detecting device for hydroextractor | |
JPS5743592A (en) | Controlling device of inverter | |
JPS5594596A (en) | Speed control means for induction machine | |
JPS53139120A (en) | Controller for induction motor | |
JPS56132251A (en) | Control of taking-up |