GB656490A - Improvements in and relating to constant current electrical installations - Google Patents
Improvements in and relating to constant current electrical installationsInfo
- Publication number
- GB656490A GB656490A GB23174/48A GB2317448A GB656490A GB 656490 A GB656490 A GB 656490A GB 23174/48 A GB23174/48 A GB 23174/48A GB 2317448 A GB2317448 A GB 2317448A GB 656490 A GB656490 A GB 656490A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- metadyne
- series
- track
- rectifier
- 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
- B60L9/04—Electric propulsion with power supply external to the vehicle using dc motors fed from dc supply lines
- B60L9/06—Electric propulsion with power supply external to the vehicle using dc motors fed from dc supply lines with conversion by metadyne
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J5/00—Circuit arrangements for transfer of electric power between ac networks and dc networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Rectifiers (AREA)
Abstract
656,490. Supply systems depending on two or more sources. PESTARINI, G. M. Sept. 2, 1948, No. 23174. Convention date, March 17, 1941. [Class 38 (iv)] [Also in Group XXXVII] The varying voltage requirements of a constant current transmission system, such as the traction supply system described in Specification 656,670, [Group XXX], are provided by a metadyne generator or transformer operating in series with another current source which is either one or substantially constant voltage or one unable to meet quick voltage variations which may be required. The second source may be a rotary D.C. machine with or without field control, or a three-phase rectifier with or without grid control. Fig. 2 shows a rectifier 3, 4 connected in series with metadynes 5, 7 to supply a track 1, 2. A resistor 6 having an earthed centre tap is connected as shown to minimize the maximum voltage between the track and earth. To reduce the circuit voltage under open circuit conditions the current/voltage characteristic of the metadyne may sharply droop when the machine output voltage reaches a predetermined value. Fig. 7 shows a twotrack supply system allowing short connections between the current sources and the track and wherein one half of the track loop is supplied by the rectifier 3, 4 and metadyne 5 in series, whilst the other half of the loop is supplied by the rectifier and metadyne 7 in series. Specifications 399,351, 417,517 and 430,009 also are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT656490X | 1941-03-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB656490A true GB656490A (en) | 1951-08-22 |
Family
ID=11298052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23174/48A Expired GB656490A (en) | 1941-03-17 | 1948-09-02 | Improvements in and relating to constant current electrical installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB656490A (en) |
-
1948
- 1948-09-02 GB GB23174/48A patent/GB656490A/en not_active Expired
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