GB824855A - Improvements in or relating to braking control systems for direct current motors - Google Patents
Improvements in or relating to braking control systems for direct current motorsInfo
- Publication number
- GB824855A GB824855A GB14399/56A GB1439956A GB824855A GB 824855 A GB824855 A GB 824855A GB 14399/56 A GB14399/56 A GB 14399/56A GB 1439956 A GB1439956 A GB 1439956A GB 824855 A GB824855 A GB 824855A
- Authority
- GB
- United Kingdom
- Prior art keywords
- source
- contacts
- field winding
- generator
- relating
- 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
- H02P3/08—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 a dc motor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
824,855. Control of D.C. motors. IGRANIC ELECTRIC CO. Ltd. May 9, 1956 [June 16, 1955], No. 14399/56. Class 38 (3). A braking system for a shunt-wound motor 10, having a field winding 12 and control rheostat 16, comprises a relay 18 which is actuated in an emergency to close contacts 18b, 18c. This causes the rheostat 16 to be shunted so that the full voltage of source L1, L2, is applied to the winding 12. At the same time, the field winding 26 of a generator 24 is energized, and the generator voltage is added to that of the source L1, L2. Thus, the field current is increased rapidly to a value above normal and the motor 10 is braked. In a modification, the generator 24 is replaced by a bridge rectifier supplied from a transformer, the rectifier being polarized to permit current-flow from the source L1, L2, through the field winding, Fig. 2 (not shown). Upon closure of contacts 18c, the rectified current is added to that derived from the source L1, L2, and passing through the field winding. Normally-closed contacts may be substituted for the contacts 18b, 18c, in which case the relay 18 is de-energized when an emergency stop is required.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US824855XA | 1955-06-16 | 1955-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB824855A true GB824855A (en) | 1959-12-09 |
Family
ID=22171521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14399/56A Expired GB824855A (en) | 1955-06-16 | 1956-05-09 | Improvements in or relating to braking control systems for direct current motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB824855A (en) |
-
1956
- 1956-05-09 GB GB14399/56A patent/GB824855A/en not_active Expired
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