GB701881A - Improvements in and relating to wheel slip detecting devices for electrically drivenvehicles - Google Patents
Improvements in and relating to wheel slip detecting devices for electrically drivenvehiclesInfo
- Publication number
- GB701881A GB701881A GB9254/52A GB925452A GB701881A GB 701881 A GB701881 A GB 701881A GB 9254/52 A GB9254/52 A GB 9254/52A GB 925452 A GB925452 A GB 925452A GB 701881 A GB701881 A GB 701881A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- relay
- relays
- motors
- energized
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/10—Indicating wheel slip ; Correction of wheel slip
-
- 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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
701,881. Control of several motors. BRITISH THOMSON-HOUSTON CO., Ltd. April 10, 1952 [April 13, 1951], No. 9254/52. Class 38(3) In a system for readily detecting wheel-slip when electrically-driven vehicles are operated at high speeds a relay coil is connected across normally equi-potential points in the circuits of two of the traction motors, and biasing means responsive to the speed of the vehicle are provided for recalibrating the relay coil. If the traction motors are of the series type the wheel-slip detection means may comprise a pair of relay coils connected across the armature-field junction points of a pair of motors, a resistor being connected between one side of the traction generator and the mid-point of the relay coils to supply a bias voltage responsive to the speed of the vehicle, Fig. 1 (not shown). The indicating means may further comprise a relay having a coil connected across normally equipotential points in the motor circuits, and a second coil energized in accordance with the motor speed. This second coil may be supplied in accordance with the traction generator voltage, Fig. 2 (not shown), or it may be energized through a rectifier from a tachometer generator driven by the vehicle, Fig. 3 (not shown). In the Figure, a generator 1 supplies traction motors 29-32 having series field windings 33-36 and adapted for series-parallel control with field-weakening provided by resistors 40. Wheel-slip relays 42-45 each have a field-drop differential coil 46 and a potential bias coil 47, bridging resistors 48 being used for adjusting the sensitivity of the relays. The coils 47 are energized through resistor 54 which is calibrated to suit different modes of operation of the traction motors, relay 56 being energized during the parallel-connection and relay 58 being responsive to field shunting. The relays 42-45 have contacts in the circuit of indicating lamp 60, or are connected in other suitable protective circuits. When the traction motors are connected in series-pairs 29, 30, and 31, 32, the wheel slip relays 43, 44, alone are effective, all the relays are effective, however, for parallel operation. The coils 46 are disconnected during changes of the motor-connections. Specification 563,177 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US701881XA | 1951-04-13 | 1951-04-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB701881A true GB701881A (en) | 1954-01-06 |
Family
ID=22093699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB9254/52A Expired GB701881A (en) | 1951-04-13 | 1952-04-10 | Improvements in and relating to wheel slip detecting devices for electrically drivenvehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB701881A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1110798A2 (en) * | 1999-12-21 | 2001-06-27 | Siemens Aktiengesellschaft | Method to early detect the passing of the adhesion coefficient limits of railway vehicle wheels |
-
1952
- 1952-04-10 GB GB9254/52A patent/GB701881A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1110798A2 (en) * | 1999-12-21 | 2001-06-27 | Siemens Aktiengesellschaft | Method to early detect the passing of the adhesion coefficient limits of railway vehicle wheels |
EP1110798A3 (en) * | 1999-12-21 | 2003-04-02 | Siemens Aktiengesellschaft | Method to early detect the passing of the adhesion coefficient limits of railway vehicle wheels |
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