GB521195A - Improvements in or relating to operating mechanism for electric switching means, more particularly for use with electric motor control systems - Google Patents
Improvements in or relating to operating mechanism for electric switching means, more particularly for use with electric motor control systemsInfo
- Publication number
- GB521195A GB521195A GB29824/38A GB2982438A GB521195A GB 521195 A GB521195 A GB 521195A GB 29824/38 A GB29824/38 A GB 29824/38A GB 2982438 A GB2982438 A GB 2982438A GB 521195 A GB521195 A GB 521195A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drum
- coil
- contactor
- controller
- pedal
- 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)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Multiple Motors (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
521,195. Master control of D.C. motors. GENERAL ELECTRIC CO. Ltd., and CROFT, E. H. Oct. 14, 1938, Nos. 29824 and 36686. [Class 38 (iii)] A controller is retarded in its forward motion by an escapement controlled by armature current. In Fig. 1 the controller is urged forward by pneumatic means 4, or alternatively by a stallable motor or slipping clutch and is restrained by an escapement. 11, 12 rocked by coils 13, 14 in circuit with selector segments 19, 20 on the controller and the contacts of an accelerating relay 15. In Fig. 2, the drum 27 is urged forward by a spring 28 strained by a pedal 24 and restrained by alternately acting pawls 59, 60. The drum 27 in its forward motion energizes contactors to . exclude armature resistance from the circuit of the motor 6 and thereafter weakens the field 12, finally opening the field contactor 8. When contactor 17 closes, the coil 17C is maintained over contact 17NO until the controller is returned to "off" position thereby preventing reinclusion of armature resistance during regenerative braking. The pawls 59, 60 are alternately withdrawn from the drum 27 by energization of fingers 35, 36 and are prevented from operation by accelerating relay AR lifting its contacts 96 under the action of motor current coil 7 and biasing coil 91, the coil 91 is variably excited by drum 26 directly associated with the pedal, so as to give variable acceleration as described in Specification 521,192. Depression of pedal immediately after release causes drum 27 to move forward without restraint as motor current is so small that the relay AR does not even lift its contact 95. Rheostatic braking is under the control of a separate drum 21 which, on movement from its " off" position, energizes coil BC of contactor B, the interlocks BNC1, BNC2 of'which open the circuits of contactors controlled by the power drum 27, and the interlock BNO closes to maintain the contactor B operative until both controllers 21 and 27 are returned to their "off position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29824/38A GB521195A (en) | 1938-10-14 | 1938-10-14 | Improvements in or relating to operating mechanism for electric switching means, more particularly for use with electric motor control systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29824/38A GB521195A (en) | 1938-10-14 | 1938-10-14 | Improvements in or relating to operating mechanism for electric switching means, more particularly for use with electric motor control systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB521195A true GB521195A (en) | 1940-05-15 |
Family
ID=10297768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29824/38A Expired GB521195A (en) | 1938-10-14 | 1938-10-14 | Improvements in or relating to operating mechanism for electric switching means, more particularly for use with electric motor control systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB521195A (en) |
-
1938
- 1938-10-14 GB GB29824/38A patent/GB521195A/en not_active Expired
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