GB532434A - Improvements in motor control systems employing variable voltage transformers - Google Patents
Improvements in motor control systems employing variable voltage transformersInfo
- Publication number
- GB532434A GB532434A GB24948/39A GB2494839A GB532434A GB 532434 A GB532434 A GB 532434A GB 24948/39 A GB24948/39 A GB 24948/39A GB 2494839 A GB2494839 A GB 2494839A GB 532434 A GB532434 A GB 532434A
- Authority
- GB
- United Kingdom
- Prior art keywords
- windings
- motor
- transformer
- saturating
- 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.)
- 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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/26—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
532,434. Control of A.C. motors. VICKERS, Inc. Aug. 31, 1939, No. 24948. Convention date, Aug. 31, 1938, [Class 38 (iii)] [Also in Group XXXV] In a transformer in which the secondary surrounds the whole of the flux path provided by the core (i.e in which there is no magnetic shunt) voltage regulation is effected by a saturating winding energized by variable D.C. or variable frequency A.C. The transformer may be applied to speed control of a motor of the type described in Specification 498,586 the windings of which are indicated diagrammatically at A, B, C. The D.C. windings B, C are supplied through a rectifier 30 from the secondary winding 14<1> of the regulating transformer 10<1>. The core of the latter carries also a pair of saturating windings 37, 38 arranged non-inductively with respect to the main windings and included in the circuit of the motor windings B, C in such a manner as to be excited-by A.C. of a frequency dependent on the speed of the motor. Thus variations in motor speed under varying load causes variations in saturating current which regulates the secondary voltage of the transformer in a manner tending to maintain constant speed,
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US532434XA | 1938-08-31 | 1938-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB532434A true GB532434A (en) | 1941-01-23 |
Family
ID=21982863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24948/39A Expired GB532434A (en) | 1938-08-31 | 1939-08-31 | Improvements in motor control systems employing variable voltage transformers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB532434A (en) |
-
1939
- 1939-08-31 GB GB24948/39A patent/GB532434A/en not_active Expired
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