GB868763A - Improvements in or relating to control arrangements for slip-ring induction motors - Google Patents
Improvements in or relating to control arrangements for slip-ring induction motorsInfo
- Publication number
- GB868763A GB868763A GB1814158A GB1814158A GB868763A GB 868763 A GB868763 A GB 868763A GB 1814158 A GB1814158 A GB 1814158A GB 1814158 A GB1814158 A GB 1814158A GB 868763 A GB868763 A GB 868763A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- rectifier
- slip
- june
- control
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/24—Variable impedance in stator or rotor circuit
- H02P25/26—Variable impedance in stator or rotor circuit with arrangements for controlling secondary impedance
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Motor And Converter Starters (AREA)
Abstract
868,763. Control of A.C. motors. GENERAL ELECTRIC CO. Ltd. June 8, 1959 [June 6, 1958], No. 18141/58. Class 38 (3). Relates to a control arrangement in which power is passed between the rotor windings of an induction motor 1 and the armature 6 of a D.C. motor through a rectifier 5, the induction motor being coupled directly to the D.C. motor which has a shunt field winding 8 connected between variable tappings of a potentiometer 9 providing excitation current in either direction. In normal operation, the voltage at the terminals of the rectifier 5 is just sufficient to overcome the back-E.M.F. of the D.C. motor, but, to run the motor at a speed corresponding to that obtained if the slip-rings 3 were short-circuited, it is necessary to compensate for the voltagedrop across the rectifier. This is achieved by reversing the field excitation of the D.C. motor so that its back-E.M.F. is reversed and has a value corresponding to the voltage-drop. The motor may be started by means of a liquid resistor 11 or by grid control of the rectifier 5. The D.C. motor may be used as an exciter to operate the induction motor as a synchronous machine. This is effected by means of a threepole switch to open-circuit or to short-circuit three of the rectifier arms and permit directcurrent to flow to the secondary windings of the motor 1 through the other three arms, Figs. 2, 3 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1814158A GB868763A (en) | 1958-06-06 | 1958-06-06 | Improvements in or relating to control arrangements for slip-ring induction motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1814158A GB868763A (en) | 1958-06-06 | 1958-06-06 | Improvements in or relating to control arrangements for slip-ring induction motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB868763A true GB868763A (en) | 1961-05-25 |
Family
ID=10107350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1814158A Expired GB868763A (en) | 1958-06-06 | 1958-06-06 | Improvements in or relating to control arrangements for slip-ring induction motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB868763A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107005189A (en) * | 2014-07-06 | 2017-08-01 | 朱利亚诺·雷斯 | Cold start-up alternating current generator |
-
1958
- 1958-06-06 GB GB1814158A patent/GB868763A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107005189A (en) * | 2014-07-06 | 2017-08-01 | 朱利亚诺·雷斯 | Cold start-up alternating current generator |
| CN107005189B (en) * | 2014-07-06 | 2020-10-30 | 朱利亚诺·雷斯 | Cold start alternator |
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