GB441717A - Improvements in or relating to methods of direct-current braking for three-phase motors - Google Patents
Improvements in or relating to methods of direct-current braking for three-phase motorsInfo
- Publication number
- GB441717A GB441717A GB27269/34A GB2726934A GB441717A GB 441717 A GB441717 A GB 441717A GB 27269/34 A GB27269/34 A GB 27269/34A GB 2726934 A GB2726934 A GB 2726934A GB 441717 A GB441717 A GB 441717A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- circuit
- rectifier
- primary
- braking
- 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)
- Stopping Of Electric Motors (AREA)
Abstract
441,717. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 22, 1934, No. 27269. Convention date, Sept. 22, 1933. [Class 38 (iii)] Non-regenerative braking.-For braking threephase motors, directcurrent is fed to the primary windings a, b, c, from a static contact rectifier k, one or more resistances d, e, t, being connected across the primary windings to prevent excessive voltage on the rectifier. In a modification of the arrangement shown two of the phases of the primary winding are directly short-circuited, and a resistance is connected between this short-circuit and the third phase. In a further modification choking coils of low saturation are connected between the points of connection of the rectifier circuit, and the phase windings. Two phases only may be connected through a choking coil and a resistance. A resistance and a choking coil may be connected to the primary circuit through a single-pole switch, or a circuit comprising a resistance and a choking coil may be permanently connected to the primary windings, the rectifier circuit being connected across the resistance by a single-pole switch for braking.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE441717X | 1933-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB441717A true GB441717A (en) | 1936-01-24 |
Family
ID=6518232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27269/34A Expired GB441717A (en) | 1933-09-22 | 1934-09-22 | Improvements in or relating to methods of direct-current braking for three-phase motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB441717A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2637007A (en) * | 1953-04-28 | Braking system for electric | ||
| DE968408C (en) * | 1940-05-07 | 1958-02-13 | Aeg | Precisely timed drive device for the direct or indirect determination of the duration of time lapses |
-
1934
- 1934-09-22 GB GB27269/34A patent/GB441717A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2637007A (en) * | 1953-04-28 | Braking system for electric | ||
| DE968408C (en) * | 1940-05-07 | 1958-02-13 | Aeg | Precisely timed drive device for the direct or indirect determination of the duration of time lapses |
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