GB776937A - Improved circuit arrangement for braking direct current motors - Google Patents
Improved circuit arrangement for braking direct current motorsInfo
- Publication number
- GB776937A GB776937A GB2346454A GB2346454A GB776937A GB 776937 A GB776937 A GB 776937A GB 2346454 A GB2346454 A GB 2346454A GB 2346454 A GB2346454 A GB 2346454A GB 776937 A GB776937 A GB 776937A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- motor
- winding
- armature
- supply
- 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
- H02P3/12—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 by short-circuit or resistive braking
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
776,937. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. July 22. 1955 [Aug. 12, 1954], No. 23464/54. Class 38(3) A braking circuit for a direct-current series motor 1 comprises an auxiliary field winding 3 which is automatically connected to the armature of the motor so as to produce flux in the same direction as the main series field, winding 2 when the external supply to the motor is interrupted. During motoring operation, contacts 12c are closed and contacts 12a, 12b, are open so that, assuming contacts 4, 6, are closed for operation of the motor in one direction, relay coils 8<SP>1</SP>, 10<SP>1</SP>, are energized from the supply-lines to close contacts 8, 10. When the supply is interrupted the opening of the contacts 8, 10. is delayed sufficiently to allow the energization of coils 8<SP>1</SP>, 10<SP>1</SP>, to be transferred from the external supply to that due to the generated voltage of the armature, the circuit for the relay coils being completed through contacts 12b and 8a. Thus, the contacts 8, 10, remain closed and the winding 3 is energized through contact 12a so that the flux produced by the auxiliary field winding maintains the generated voltage, dynamic braking being established by connecting resistor 13 across the armature of the motor. If contacts 5, 7, are operated for reversing the motor, then the connections to the winding 3 are also reversed by closure of contacts 9, 11. In a modification the auxiliary field winding is seriesconnected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2346454A GB776937A (en) | 1954-08-12 | 1954-08-12 | Improved circuit arrangement for braking direct current motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2346454A GB776937A (en) | 1954-08-12 | 1954-08-12 | Improved circuit arrangement for braking direct current motors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB776937A true GB776937A (en) | 1957-06-12 |
Family
ID=10196049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2346454A Expired GB776937A (en) | 1954-08-12 | 1954-08-12 | Improved circuit arrangement for braking direct current motors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB776937A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012028642A1 (en) * | 2010-09-03 | 2012-03-08 | Thrane & Thrane A/S | An assembly comprising a movable and brakable/dampable part and a method for braking a movable part |
-
1954
- 1954-08-12 GB GB2346454A patent/GB776937A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012028642A1 (en) * | 2010-09-03 | 2012-03-08 | Thrane & Thrane A/S | An assembly comprising a movable and brakable/dampable part and a method for braking a movable part |
US9054616B2 (en) | 2010-09-03 | 2015-06-09 | Thrane & Thrane A/S | Assembly comprising a movable and brakable/dampable part and a method for braking a movable part |
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