GB670856A - Improvements in and relating to the braking of induction motors - Google Patents
Improvements in and relating to the braking of induction motorsInfo
- Publication number
- GB670856A GB670856A GB1321550A GB1321550A GB670856A GB 670856 A GB670856 A GB 670856A GB 1321550 A GB1321550 A GB 1321550A GB 1321550 A GB1321550 A GB 1321550A GB 670856 A GB670856 A GB 670856A
- Authority
- GB
- United Kingdom
- Prior art keywords
- braking
- current
- rectifier
- generator
- motor
- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
- H02P3/24—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by applying dc to the motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
670,856. Control of A.C. and D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., SHARP. H., and PETCH, T. H. Nov. 16, 1950. [May 25. 1950] No. 13215/50. Class 38 (iii). An induction motor IM is mechanically coupled to a, direct-current motor DCM which is supplied from a Ward-Leonard generator G. Braking of the induction motor is provided by disconnecting it from the alternating-current supply and supplying its primary winding with direct-current from exciter E through contactor C. The braking-effect may be increased by adjusting the excitation of field winding F4 to reduce the generator voltage, thus increasing the current passed from the motor DCM to the generator. This produces a greater excitation of exciter field winding F1 and a heavier direct-current excitation of the .induction motor. Increase of the generator voltage leads to decrease of the braking-effect, and, if the generator voltage is made greater than that of the motor DCM, the latter will exert a driving-torque, a rectifier R1 preventing energization of the field winding F1 under these circumstances. A rectifier R2 by-passes the winding F1 and rectifier R1. The rectifiers may be replaced by contactors and the exciter E by other forms of amplifiers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1321550A GB670856A (en) | 1950-05-25 | 1950-05-25 | Improvements in and relating to the braking of induction motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1321550A GB670856A (en) | 1950-05-25 | 1950-05-25 | Improvements in and relating to the braking of induction motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB670856A true GB670856A (en) | 1952-04-23 |
Family
ID=10018917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1321550A Expired GB670856A (en) | 1950-05-25 | 1950-05-25 | Improvements in and relating to the braking of induction motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB670856A (en) |
-
1950
- 1950-05-25 GB GB1321550A patent/GB670856A/en not_active Expired
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