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 drivenvehicles

Info

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
Application number
GB9254/52A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB701881A publication Critical patent/GB701881A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/10Indicating wheel slip ; Correction of wheel slip
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L2200/00Type of vehicles
    • B60L2200/26Rail vehicles
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/60Other road transportation technologies with climate change mitigation effect
    • Y02T10/64Electric 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.
GB9254/52A 1951-04-13 1952-04-10 Improvements in and relating to wheel slip detecting devices for electrically drivenvehicles Expired GB701881A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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