GB826497A - Improvements in or relating to electric current rectifying arrangements - Google Patents
Improvements in or relating to electric current rectifying arrangementsInfo
- Publication number
- GB826497A GB826497A GB3106456A GB3106456A GB826497A GB 826497 A GB826497 A GB 826497A GB 3106456 A GB3106456 A GB 3106456A GB 3106456 A GB3106456 A GB 3106456A GB 826497 A GB826497 A GB 826497A
- Authority
- GB
- United Kingdom
- Prior art keywords
- converters
- switches
- motor
- conducting
- 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
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
- B60L9/12—Electric propulsion with power supply external to the vehicle using dc motors fed from ac supply lines with static converters
-
- 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)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Direct Current Motors (AREA)
Abstract
826,497. Rectifying; transformers. GENERAL ELECTRIC CO. Ltd. Oct. 11, 1957 [Oct. 11, 1956], No. 31064/56. Class 38 (2). A D.C. traction motor 10 is energized from a transformer 6 through mercury arc converters 9a-9h having anodes connected to different tappings on the transformer secondary winding 7 and cathode connected to one terminal of the motor armature, the other terminal being connected to the central point of winding 7. The converters which may be of the kind described in Specification 817,504, [Group XL (a)] are controlled by exciting electrodes which may be rendered positive from rectifier 19 upon closure of switches 17. Two switches 17 associated with converters spaced equally from the centre tap are normally closed so that the motor receives fully rectified current. To vary the motor voltage, switches 17 of two converters next to the two conducting converters are closed to render them conducting, and the switches 17 of the conducting converters are opened to render them now conducting. All the excitation circuits are opened on overload by relay 20. The motor 10 has two field windings 14, 15 and a filter circuit comprising inductor 12 and capacitor 13. In another arrangement, two pairs of exciter controlled converters acting as diverter switches are connected to the transformer tappings through selector switches. Pairs of converters normally conduct in parallel, but to change the motor voltage first one and then the other converter of a pair is connected to the next tap. Their conductivity is appropriately controlled by switches in the exciter circuits which operate with the selector switches. Load shaping is assisted by chokes (Fig. 3, not shown). In a modification the respective converters of a pair are connected to one of two tapped secondary windings (Fig. 2, not shown). The rectifiers may be arranged as a bridge. Specifications 817,301 and 817,505, [both in Group XL (a)], also are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3106456A GB826497A (en) | 1956-10-11 | 1956-10-11 | Improvements in or relating to electric current rectifying arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3106456A GB826497A (en) | 1956-10-11 | 1956-10-11 | Improvements in or relating to electric current rectifying arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB826497A true GB826497A (en) | 1960-01-06 |
Family
ID=10317421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3106456A Expired GB826497A (en) | 1956-10-11 | 1956-10-11 | Improvements in or relating to electric current rectifying arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB826497A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1244946B (en) * | 1961-05-15 | 1967-07-20 | Brentford Electric Ltd | Step switching and control device for transformers |
| DE1297751B (en) * | 1965-01-19 | 1969-06-19 | Siemens Ag | Switching device for switching the transmission ratio of a current transformer on the secondary side |
-
1956
- 1956-10-11 GB GB3106456A patent/GB826497A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1244946B (en) * | 1961-05-15 | 1967-07-20 | Brentford Electric Ltd | Step switching and control device for transformers |
| DE1297751B (en) * | 1965-01-19 | 1969-06-19 | Siemens Ag | Switching device for switching the transmission ratio of a current transformer on the secondary side |
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