JPS55162897A - Control method for ac motor - Google Patents
Control method for ac motorInfo
- Publication number
- JPS55162897A JPS55162897A JP6969879A JP6969879A JPS55162897A JP S55162897 A JPS55162897 A JP S55162897A JP 6969879 A JP6969879 A JP 6969879A JP 6969879 A JP6969879 A JP 6969879A JP S55162897 A JPS55162897 A JP S55162897A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- frequency
- motor
- inverter
- output
- 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 enable smooth changeover between inverter operation and system operation in a simple method, by starting energization from a frequency converter as the output frequency of the converter is made almost coincident with the frequency of the terminal voltage of a motor. CONSTITUTION:A switch 3 is closed to start operating an inverter 2. After a motor 5 is accelerated to system frequency by an operation pattern generated by an acceleration/deceleration calculator 13, another switch 4 is closed and the former switch 3 is simultaneously opened to put the motot 5 into system operation. To change over the motor from a system to the inverter, a switch 23 is opened and another switch 12 is closed. The switch 4 is then opened as the output of an amplifier 16 is kept zero by a switch 17, thereby making the output ns of a frequency detector 10 coincident with the rotational frequency of the motor 5. When the output frequency of the inverter 2 is equalized to the output ns through the acceleration/ deceleration calculator 13, an adder 19 and a frequency controller 20, the switch 3 is closed to start the inverter operation of the motor 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6969879A JPS55162897A (en) | 1979-06-04 | 1979-06-04 | Control method for ac motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6969879A JPS55162897A (en) | 1979-06-04 | 1979-06-04 | Control method for ac motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55162897A true JPS55162897A (en) | 1980-12-18 |
Family
ID=13410333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6969879A Pending JPS55162897A (en) | 1979-06-04 | 1979-06-04 | Control method for ac motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55162897A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57129195A (en) * | 1981-01-30 | 1982-08-11 | Shinko Electric Co Ltd | Power source switching controlling method for motor |
| JPS59126598U (en) * | 1983-02-14 | 1984-08-25 | 三菱電機株式会社 | Inverter control circuit |
| JPH01186187A (en) * | 1988-01-20 | 1989-07-25 | Toshiba Corp | Controller for induction machine |
| RU2496219C2 (en) * | 2011-12-19 | 2013-10-20 | Закрытое акционерное общество "Электропривод и силовая Электроника" | Control method of frequency-assisted electric drive |
-
1979
- 1979-06-04 JP JP6969879A patent/JPS55162897A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57129195A (en) * | 1981-01-30 | 1982-08-11 | Shinko Electric Co Ltd | Power source switching controlling method for motor |
| JPS59126598U (en) * | 1983-02-14 | 1984-08-25 | 三菱電機株式会社 | Inverter control circuit |
| JPH01186187A (en) * | 1988-01-20 | 1989-07-25 | Toshiba Corp | Controller for induction machine |
| RU2496219C2 (en) * | 2011-12-19 | 2013-10-20 | Закрытое акционерное общество "Электропривод и силовая Электроника" | Control method of frequency-assisted electric drive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Effective date: 20050316 Free format text: JAPANESE INTERMEDIATE CODE: A621 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20050316 |
|
| A131 | Notification of reasons for refusal |
Effective date: 20070828 Free format text: JAPANESE INTERMEDIATE CODE: A131 |
|
| A313 | Final decision of rejection without a dissenting response from the applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A313 Effective date: 20080116 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080226 |