GB833993A - Improvements relating to electric circuits - Google Patents
Improvements relating to electric circuitsInfo
- 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
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).
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)
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)
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 |
-
1955
- 1955-11-15 GB GB3262455A patent/GB833993A/en not_active Expired
-
1956
- 1956-11-14 CH CH338491D patent/CH338491A/en unknown
- 1956-11-15 DE DE1956E0013236 patent/DE1134455B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
CH338491A (en) | 1959-05-31 |
DE1134455B (en) | 1962-08-09 |
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