JPS55117492A - Operating method of three-phase induction motor - Google Patents
Operating method of three-phase induction motorInfo
- Publication number
- JPS55117492A JPS55117492A JP2451279A JP2451279A JPS55117492A JP S55117492 A JPS55117492 A JP S55117492A JP 2451279 A JP2451279 A JP 2451279A JP 2451279 A JP2451279 A JP 2451279A JP S55117492 A JPS55117492 A JP S55117492A
- Authority
- JP
- Japan
- Prior art keywords
- windings
- motor
- phase induction
- induction motor
- operating method
- 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
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE:To operate a three-phase induction motor at a high performance both when the motor has a light load and when the motor has a heavy load, by switching in a suitable manner the first windings the number of which is equal to that of pair of poles per phase provided electrically at 120 deg. intervals, and the second windings provided among the first windings. CONSTITUTION:The second windings U2, V2, W2 of a three-phase induction motor are DELTA connected, and the first windings U1, V1, W1 are connected between nodes (d), (e), (f) of the second windings and power sources R, S, T. Means K1, K2, K3 for use in connecting nodes (a), (f); (c), (e); (b), (d); respectively, are provided. These connecting means are opened when the motor has a light load, and closed when the motor has a heavy load. The windings U1, W2; W1, V2; V1, U2; are connected in parallel so that the windings as a whole are in double DELTA connection with respect to the power sources R, S, T.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2451279A JPS55117492A (en) | 1979-03-05 | 1979-03-05 | Operating method of three-phase induction motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2451279A JPS55117492A (en) | 1979-03-05 | 1979-03-05 | Operating method of three-phase induction motor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55117492A true JPS55117492A (en) | 1980-09-09 |
JPS6117236B2 JPS6117236B2 (en) | 1986-05-06 |
Family
ID=12140217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2451279A Granted JPS55117492A (en) | 1979-03-05 | 1979-03-05 | Operating method of three-phase induction motor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55117492A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0346488A1 (en) * | 1987-12-19 | 1989-12-20 | Fanuc Ltd. | Device for driving and controlling the spindle of a machine tool |
-
1979
- 1979-03-05 JP JP2451279A patent/JPS55117492A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0346488A1 (en) * | 1987-12-19 | 1989-12-20 | Fanuc Ltd. | Device for driving and controlling the spindle of a machine tool |
Also Published As
Publication number | Publication date |
---|---|
JPS6117236B2 (en) | 1986-05-06 |
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