GB833993A - Improvements relating to electric circuits - Google Patents

Improvements relating to electric circuits

Info

Publication number
GB833993A
GB833993A GB3262455A GB3262455A GB833993A GB 833993 A GB833993 A GB 833993A GB 3262455 A GB3262455 A GB 3262455A GB 3262455 A GB3262455 A GB 3262455A GB 833993 A GB833993 A GB 833993A
Authority
GB
United Kingdom
Prior art keywords
winding
voltage
motors
switches
load
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
GB3262455A
Inventor
Henry Bolton Calverley
Edward Alfred Keith Jarvis
Thomas Earnshaw Calverley
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB3262455A priority Critical patent/GB833993A/en
Priority to CH338491D priority patent/CH338491A/en
Priority to DE1956E0013236 priority patent/DE1134455B/en
Publication of GB833993A publication Critical patent/GB833993A/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
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B60L9/02—Electric propulsion with power supply external to the vehicle using dc motors
    • B60L9/08—Electric propulsion with power supply external to the vehicle using dc motors fed from ac supply lines
    • 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
    • B60L9/00—Electric propulsion with power supply external to the vehicle
    • B60L9/16—Electric propulsion with power supply external to the vehicle using ac induction motors
    • B60L9/24—Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines
    • B60L9/26—Electric propulsion with power supply external to the vehicle using ac induction motors fed from ac supply lines single-phase motors
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Rectifiers (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

833,993. Control of D.C. motors. ENGLISH ELECTRIC CO. Ltd. Nov. 14, 1956 [Nov. 15, 1955], No. 32624/55. Class 38 (3). [Also in Group XXXV] A D.C. load such as traction motors M 1 -M 4 are supplied from an A.C. source 12 through a full-wave rectifier 16 and a transformer 10 with a tap-changing arrangement, the centre point of the D.C. load being connected at 21 to the secondary winding of the transformer. In the arrangement shown, connection 21 is made to the centre point of two reactors 19, 20, the ends of which are connected respectively through switches T 0 -T 4 , TT 0 -TT 4 to alternate tappings of two transformer secondary windings 14, 15, the outer ends of which are connected to the A.C. rectifier terminals. These switches, together with P and PP, are operated by a controller in such sequence, tabulated in Fig. 2 (not shown) that, firstly half the voltage of one tap section of winding 14 is applied to motors M 1 , M 3 , secondly half the voltage of one tap section of winding 15 is additionally applied to motors M 2 , M 4 , and then these voltages are stepped up one at a time by half that of a section, each step. In one modification, connection 21 is connected to the centre point of a single reactor connecting through switches, the inner ends of the two secondary windings 14, 15, Fig. 3 (not shown). As both halves of the load must be supplied with the same voltage, corresponding switches connected to each winding 14, 15 must be operated simultaneously, so that the number of voltage steps which may be selected is halved. In a further modification, after the full voltage steps of the arrangement of Fig. 1 have been exhausted, each connection to the A.C. rectifier terminal is transferred from the outer end of a winding 14, 15 to the inner of the other winding. A further similar number of steps is then available as the output voltages now include all that from one winding 14 or 15 and part from the other, Fig. 4 (not shown).
GB3262455A 1955-11-15 1955-11-15 Improvements relating to electric circuits Expired GB833993A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3262455A GB833993A (en) 1955-11-15 1955-11-15 Improvements relating to electric circuits
CH338491D CH338491A (en) 1955-11-15 1956-11-14 Installation for supplying, from an alternating current source, a load consuming direct current
DE1956E0013236 DE1134455B (en) 1955-11-15 1956-11-15 Circuit for supplying a direct current consumer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3262455A GB833993A (en) 1955-11-15 1955-11-15 Improvements relating to electric circuits

Publications (1)

Publication Number Publication Date
GB833993A true GB833993A (en) 1960-05-04

Family

ID=10341517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3262455A Expired GB833993A (en) 1955-11-15 1955-11-15 Improvements relating to electric circuits

Country Status (3)

Country Link
CH (1) CH338491A (en)
DE (1) DE1134455B (en)
GB (1) GB833993A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3601690A (en) * 1970-02-16 1971-08-24 Gen Dynamics Corp Multicoupler employing a multiple filar-wound transformer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE587059C (en) * 1929-05-30 1933-10-28 Siemens Schuckertwerke Akt Ges Circuit for voltage regulation of rectifiers by step transformer

Also Published As

Publication number Publication date
CH338491A (en) 1959-05-31
DE1134455B (en) 1962-08-09

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