GB706456A - Improvements in or relating to control systems for direct current electric motors - Google Patents

Improvements in or relating to control systems for direct current electric motors

Info

Publication number
GB706456A
GB706456A GB7730/52A GB773052A GB706456A GB 706456 A GB706456 A GB 706456A GB 7730/52 A GB7730/52 A GB 7730/52A GB 773052 A GB773052 A GB 773052A GB 706456 A GB706456 A GB 706456A
Authority
GB
United Kingdom
Prior art keywords
motor
field winding
current
relating
direct current
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
GB7730/52A
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.)
Westinghouse Electric International Co
Original Assignee
Westinghouse Electric International Co
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 Westinghouse Electric International Co filed Critical Westinghouse Electric International Co
Publication of GB706456A publication Critical patent/GB706456A/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
    • 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

Abstract

706,456. Control of D.C. Motors. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. March 26, 1952 [March 30, 1951], No. 7730/52. Class 38(3) Relates to a control system similar to that described in Specification 706,455 but the claims refer to means for checking the sequential advance of the motor accelerating steps in response to the magnitude of the motor current and to a voltage induced in a field winding of the motor. Reference is also made to means for discontinuing dynamic braking operation when the braking-current falls. to a low value. In a modification of the arrangement shown in the Specification referred to above, the coil 25 of the current-limit relay LR<SP>1</SP> is connected directly across the series field winding 6, an increment of motor current causing a transient voltage increase across terminals 17, 18, due to the inductance of the field winding. The winding 25 therefore receives a steady-state voltage as well as a transient voltage.
GB7730/52A 1951-03-30 1952-03-26 Improvements in or relating to control systems for direct current electric motors Expired GB706456A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US706456XA 1951-03-30 1951-03-30

Publications (1)

Publication Number Publication Date
GB706456A true GB706456A (en) 1954-03-31

Family

ID=22096549

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7730/52A Expired GB706456A (en) 1951-03-30 1952-03-26 Improvements in or relating to control systems for direct current electric motors

Country Status (1)

Country Link
GB (1) GB706456A (en)

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