GB494363A - Improvements in or relating to means for indicating failure of the electric supply in regenerative electric motor control systems - Google Patents
Improvements in or relating to means for indicating failure of the electric supply in regenerative electric motor control systemsInfo
- Publication number
- GB494363A GB494363A GB1773337A GB1773337A GB494363A GB 494363 A GB494363 A GB 494363A GB 1773337 A GB1773337 A GB 1773337A GB 1773337 A GB1773337 A GB 1773337A GB 494363 A GB494363 A GB 494363A
- Authority
- GB
- United Kingdom
- Prior art keywords
- contacts
- motor
- supply
- coil
- energization
- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/003—Dynamic electric braking by short circuiting the motor
-
- 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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
- B60L7/12—Dynamic electric regenerative braking for vehicles propelled by dc motors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Control Of Multiple Motors (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
494,363. Control of motors. GENERAL ELECTRIC CO., Ltd., and TURRALL, J. C. June 25, 1937, No. 17733. [Class 38 (iii)] For indicating failure of the supply in a regenerativ e motor control system, a lamp 14 or other indicator is connected to the supply in parallel with the motor 1, and a relay having a coil 18 energized in accordance with the motor armature current prevents energization of the indicator circuit by the voltage generated by the motor when the supply fails during regeneration. The contacts 17 of the relay are in parallel with contacts 15, 16 connected in series, the contacts 15 being normally closed auxiliary contacts of a line switch LP, and the contacts 16 normally closed auxiliary contacts of a contactor 13 whereby accelerating resistance 12 is shortcircuited. The motor 1 operates a trolley bus and during regenerative or motoring operation, the energization of the coil 18 closes the contacts 17 and the lamps 14 are energized. During regeneration, if the supply fails due to the trolleys leaving the conductors, the energization of the coil 18 falls and the lamps 14 are extinguished. During coasting with the motor disconnected, the lamp circuit is completed through the contacts 15, 16. If the contactor 13 is connected across the resistance 12 only, the contacts 16 may be dispensed with. The Provisional Specification describes an arrangement in which the armature current relay has two sets of contacts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1773337A GB494363A (en) | 1937-06-25 | 1937-06-25 | Improvements in or relating to means for indicating failure of the electric supply in regenerative electric motor control systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1773337A GB494363A (en) | 1937-06-25 | 1937-06-25 | Improvements in or relating to means for indicating failure of the electric supply in regenerative electric motor control systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB494363A true GB494363A (en) | 1938-10-25 |
Family
ID=10100285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1773337A Expired GB494363A (en) | 1937-06-25 | 1937-06-25 | Improvements in or relating to means for indicating failure of the electric supply in regenerative electric motor control systems |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB494363A (en) |
-
1937
- 1937-06-25 GB GB1773337A patent/GB494363A/en not_active Expired
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