GB792497A - Improvements in and relating to starting circuits for electric motors - Google Patents
Improvements in and relating to starting circuits for electric motorsInfo
- Publication number
- GB792497A GB792497A GB2117655A GB2117655A GB792497A GB 792497 A GB792497 A GB 792497A GB 2117655 A GB2117655 A GB 2117655A GB 2117655 A GB2117655 A GB 2117655A GB 792497 A GB792497 A GB 792497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reactor
- motor
- relating
- july
- electric motors
- 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
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B3/00—Ploughs with fixed plough-shares
- A01B3/36—Ploughs mounted on tractors
- A01B3/40—Alternating ploughs
- A01B3/42—Turn-wrest ploughs
-
- 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
- H02P2207/00—Indexing scheme relating to controlling arrangements characterised by the type of motor
- H02P2207/05—Synchronous machines, e.g. with permanent magnets or DC excitation
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Motor And Converter Starters (AREA)
Abstract
792,497. Control of A.C. motors. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 20, 1956 [July 21, 1955], No. 21176/55. Class 38 (3). The starting circuit of a synchronous motor comprises a reactor 7 in series with the motor primary winding 1, said reactor being formed by a coil mounted on the core of an auto transformer 2 of the Korndorfer type. During the initial portion of the starting period, switch 8 is open, so that the voltage-drop in the reactor reduces the current drawn by the motor, and decreases as the motor current decreases. At the end of said portion of the starting period, the reactor is short-circuited without causing excessive voltage-change. The reactor and transformer may be accommodated in a cooling tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2117655A GB792497A (en) | 1955-07-21 | 1955-07-21 | Improvements in and relating to starting circuits for electric motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2117655A GB792497A (en) | 1955-07-21 | 1955-07-21 | Improvements in and relating to starting circuits for electric motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB792497A true GB792497A (en) | 1958-03-26 |
Family
ID=10158448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2117655A Expired GB792497A (en) | 1955-07-21 | 1955-07-21 | Improvements in and relating to starting circuits for electric motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB792497A (en) |
-
1955
- 1955-07-21 GB GB2117655A patent/GB792497A/en not_active Expired
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