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US 3,998,305 AGranted
Arrangement in current supply systems
AssigneeAllmanna Svenska Elektriska Aktiebolaget
InventorVilmos Torok
Life of this patent
Estimating the term…
Abstract
In a current supply system for wheeled vehicles which includes a DC generating device and substantially parallel running over-head lines provided with current collectors, a closed AC circuit is provided which is independent of the current collector and includes an AC generating device which feeds the over-head lines, as well as a device connecting the lines together. The DC and AC generating device includes a first rectifying device which is connected to a three-phase AC network and a generating DC network with a superposed AC component.
Claims6
A transportation system comprising
- a non-railbound vehicle,
- an overhead line having two conductors (11),
- said vehicle comprising a current collector (12) movably mounted thereon,
- said current collector being engageable with said overhead line,
- a DC power supply means (10) connected to said conductors for supplying tractive power to said vehicle,
- an AC component generating means (10) connected to said conductors for generating an alternating current component therein and thereby an alternating electromagnetic field (B.sub.1,B.sub.2) in the vicinity of said line,
- said vehicle having sensing means (16) for sensing said field and control means (15) connected to said sensing means for generating a signal (T) in response to displacement of the current collector in relation to said line.
4 more elements
Dependencies are inferred from the claim text.