The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 14, 2008
Filed:
Nov. 21, 2006
Applicant:
Pierre Chanal, Vielle Adour, FR;
Inventor:
Pierre Chanal, Vielle Adour, FR;
Assignee:
Alstom Transport, SA, Levallois-Perret, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60L 7/06 (2006.01); H02P 27/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
This method maintains a direct voltage at the input of a DC/AC voltage converter in order to maintain an asynchronous motor in a magnetised state, the input of the converter being connected to a DC supply bus of an electric vehicle, and comprises, in a free wheel mode during which the vehicle coasts and the bus is disconnected from a catenary: