GB654225A - - Google Patents
Info
- Publication number
- GB654225A GB654225A GB6655/48A GB665548A GB654225A GB 654225 A GB654225 A GB 654225A GB 6655/48 A GB6655/48 A GB 6655/48A GB 665548 A GB665548 A GB 665548A GB 654225 A GB654225 A GB 654225A
- Authority
- GB
- United Kingdom
- Prior art keywords
- series
- field winding
- shunt field
- shunt
- contact
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/10—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for automatic control superimposed on human control to limit the acceleration of the vehicle, e.g. to prevent excessive motor current
- B60L15/12—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for automatic control superimposed on human control to limit the acceleration of the vehicle, e.g. to prevent excessive motor current with circuits controlled by relays or contactors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Motor And Converter Starters (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Stopping Of Electric Motors (AREA)
Abstract
654,225. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., and BUTLER, F. E. March 4, 1946, No. 6655/48. [Class 38 (iii)] A control circuit for a direct-current motor, having an armature A, series field winding B, and auxiliary shunt field winding C, includes a plurality of series starting resistors which are adapted to be shortcircuited in turn to accelerate the motor in stages. A contactor 7 is connected in series in the shunt field circuit and is adapted to be opened after the last resistor has been short-circuited to achieve further acceleration of the motor as the shunt excitation decreases. A time-delay relay coil 9c is connected in parallel with the shunt field and is adapted to open its normally-closed armature contacts when the shunt field is energized to prevent the closing of a contact 9 in series with resistor R6, which is placed across the field winding B, the time-delay being sufficient to keep the armature contacts open until the voltage across the shunt field winding has been reduced substantially to zero. Closure of contact 10 completes the full accelerating sequence. The short-circuiting of the series starting resistors may be effected by current limit relays having coils connected across certain of the resistors. Dynamic braking is instituted by the closing of a contact 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6655/48A GB654225A (en) | 1948-03-04 | 1948-03-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6655/48A GB654225A (en) | 1948-03-04 | 1948-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB654225A true GB654225A (en) | 1951-06-13 |
Family
ID=9818385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6655/48A Expired GB654225A (en) | 1948-03-04 | 1948-03-04 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB654225A (en) |
-
1948
- 1948-03-04 GB GB6655/48A patent/GB654225A/en not_active Expired
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