GB452948A - Improvements in and relating to rheostatic braking systems for electrically driven vehicles supplied through grid controlled rectifiers - Google Patents

Improvements in and relating to rheostatic braking systems for electrically driven vehicles supplied through grid controlled rectifiers

Info

Publication number
GB452948A
GB452948A GB18817/35A GB1881735A GB452948A GB 452948 A GB452948 A GB 452948A GB 18817/35 A GB18817/35 A GB 18817/35A GB 1881735 A GB1881735 A GB 1881735A GB 452948 A GB452948 A GB 452948A
Authority
GB
United Kingdom
Prior art keywords
field
grid
rectifier
resistance
transformer
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
GB18817/35A
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 GB452948A publication Critical patent/GB452948A/en
Expired legal-status Critical Current

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
    • B60L7/02—Dynamic electric resistor braking
    • 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

Abstract

452,948. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. July 1, 1935, No. 18817. Convention date, June 30, 1934. [Class 38 (iii)] Non - regenerative braking ; varying E.M.F. -A locomotive motor is supplied during normal running from an alternating current source through a transformer t and a grid -controlled rectifier, and during rheostatic braking, when its armature a is connected to a resistance r, its series field f is separately excited from the grid-controlled rectifier through which the motor is supplied during the running operation. The braking is regulated by grid control of the rectifier, the resistance r being constant. The voltage for the separate excitation of the field is suitably reduced by making connection to low-voltage tappings on the rectifier transformer t or by operating a switch u to establish a suitable fresh neutral point on the transformer winding. Sudden field changes may be avoided by connecting a choke d in the field circuit, and, if necessary, shunting the field by capacity-inductance circuits. The field circuit may include a stabilizing resistance carrying the armature current.
GB18817/35A 1934-06-30 1935-07-01 Improvements in and relating to rheostatic braking systems for electrically driven vehicles supplied through grid controlled rectifiers Expired GB452948A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE452948X 1934-06-30

Publications (1)

Publication Number Publication Date
GB452948A true GB452948A (en) 1936-09-02

Family

ID=6538722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18817/35A Expired GB452948A (en) 1934-06-30 1935-07-01 Improvements in and relating to rheostatic braking systems for electrically driven vehicles supplied through grid controlled rectifiers

Country Status (1)

Country Link
GB (1) GB452948A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3297931A (en) * 1963-11-22 1967-01-10 Sevcon Eng Ltd Pulse operated control for direct current electric motors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3297931A (en) * 1963-11-22 1967-01-10 Sevcon Eng Ltd Pulse operated control for direct current electric motors

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