GB432292A - Improvements in or relating to regenerative braking systems for electric motors - Google Patents
Improvements in or relating to regenerative braking systems for electric motorsInfo
- Publication number
- GB432292A GB432292A GB756534A GB756534A GB432292A GB 432292 A GB432292 A GB 432292A GB 756534 A GB756534 A GB 756534A GB 756534 A GB756534 A GB 756534A GB 432292 A GB432292 A GB 432292A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resistance
- circuit
- field
- regenerative braking
- falls below
- 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
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/34—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using Ward-Leonard arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
432,292. Control of D.C. motors. ENGLISH ELECTRIC CO., Ltd., 28, Kingsway, London, and WILSON, J. C., Uplands, Brocton, Stafford. March 9, 1934, No. 7565. [Class 38 (iii)] Varying E.M.F. ; regenerative braking.- In a Ward Leonard or like system the motor is regeneratively braked to rest by connecting the generator field winding in a closed circuit disconnected from the supply, and automatically opening or increasing the resistance of the said circuit when the excitation falls below a predetermined value. To stop the motor a latch lever C is operated mechanically or electromagnetically to release a hook member E and allow a weight G to move a switch arm H into engagement with a contact M and shortcircuit the generator field B through a variable resistance O. When the field current falls below a predetermined value a relay Q opens its contacts R to open or insert resistance in the closed field circuit. Several relays may be provided to insert different values of resistance at different predetermined values of field current. The movement of the switch arm H momentarily inserts a resistance N in the field circuit so that the transition is effected without opening the circuit or short-circuiting the excitation supply. Alternatively the switch may have an auxiliary contact connected to the main contact through a resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB756534A GB432292A (en) | 1934-03-09 | 1934-03-09 | Improvements in or relating to regenerative braking systems for electric motors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB756534A GB432292A (en) | 1934-03-09 | 1934-03-09 | Improvements in or relating to regenerative braking systems for electric motors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB432292A true GB432292A (en) | 1935-07-24 |
Family
ID=9835551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB756534A Expired GB432292A (en) | 1934-03-09 | 1934-03-09 | Improvements in or relating to regenerative braking systems for electric motors |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB432292A (en) |
-
1934
- 1934-03-09 GB GB756534A patent/GB432292A/en not_active Expired
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