GB481751A - Improvements in or relating to electric motor control systems - Google Patents

Improvements in or relating to electric motor control systems

Info

Publication number
GB481751A
GB481751A GB25848/36A GB2584836A GB481751A GB 481751 A GB481751 A GB 481751A GB 25848/36 A GB25848/36 A GB 25848/36A GB 2584836 A GB2584836 A GB 2584836A GB 481751 A GB481751 A GB 481751A
Authority
GB
United Kingdom
Prior art keywords
series
motors
parallel
connection
battery
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
GB25848/36A
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.)
EDWARD HUGH CROFT
General Electric Co PLC
Original Assignee
EDWARD HUGH CROFT
General Electric Co PLC
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 EDWARD HUGH CROFT, General Electric Co PLC filed Critical EDWARD HUGH CROFT
Priority to GB25848/36A priority Critical patent/GB481751A/en
Publication of GB481751A publication Critical patent/GB481751A/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
    • B60L15/02—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit
    • B60L15/04—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles characterised by the form of the current used in the control circuit using dc
    • 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)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Multiple Motors (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

481,751. Control of D.C. motors. GENERAL ELECTRIC CO., Ltd., and CROFT, E. H. Sept. 23, 1936, No. 25848. [Class 38 (iii)] i i Varying E.M.F.-A range of speed control for a group of motors is obtained by connecting two similar sources in series or in parallel, and in order to provide a continuous tractive effort during the transition from parallel to series connection of the sources, the motors are first connected in series across one of the sources with the other source disconnected, then some of the motors are short-circuited through a resistance and the remaining motors supplied from the first source, then the disconnected motors are reconnected to the other source with a connection common to the sources and the two groups of motors, and finally the common connection is broken. In the first step of a controller contactors BP1, BP2, LS1, S1, S2, S3, and G4 close to connect motors A1-A4 in in series across battery sections B1. B2, connected in parallel, and on the second and third steps contactors 1-4 and 5-8 are closed to short-circuit resistances R1, R2, in two steps. The battery connections are then charged from parallel to series in a series of transition steps. The contactor BP2 is first opened, contactors 1-8 are then opened and a contactor B closed, followed by the opening of the contactor BP1, and finally the closure of the contactor BS. Further speed control is effected bv the resistances R1, R2, and the change from series to series-parallel and from series-parallel to parallel connection of the motors. Stages of field weakening may also be employed. Means may be provided so that alternative sections of the battery take the load during transition from parallel to series connection of the battery sections, and resistances may be connected in the battery circuits during the parallel connection thereof.
GB25848/36A 1936-09-23 1936-09-23 Improvements in or relating to electric motor control systems Expired GB481751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB25848/36A GB481751A (en) 1936-09-23 1936-09-23 Improvements in or relating to electric motor control systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25848/36A GB481751A (en) 1936-09-23 1936-09-23 Improvements in or relating to electric motor control systems

Publications (1)

Publication Number Publication Date
GB481751A true GB481751A (en) 1938-03-17

Family

ID=10234320

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25848/36A Expired GB481751A (en) 1936-09-23 1936-09-23 Improvements in or relating to electric motor control systems

Country Status (1)

Country Link
GB (1) GB481751A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1109256B (en) * 1952-08-29 1961-06-22 Siemens Ag Three-phase multi-motor drive for relative synchronization of the sub-motors
US3168688A (en) * 1962-12-07 1965-02-02 Yale & Towne Inc Battery fed plural motor control system for an industrial truck

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1109256B (en) * 1952-08-29 1961-06-22 Siemens Ag Three-phase multi-motor drive for relative synchronization of the sub-motors
US3168688A (en) * 1962-12-07 1965-02-02 Yale & Towne Inc Battery fed plural motor control system for an industrial truck

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