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:
Nov. 04, 2014
Filed:
Sep. 09, 2011
Alexander Schwery, Küttigen, CH;
Stefan Baumeister, Rheinheim, DE;
Benjamin Jordan, Suhr, CH;
Simon Andreas Frutiger, Lenzburg, CH;
Alexander Schwery, Küttigen, CH;
Stefan Baumeister, Rheinheim, DE;
Benjamin Jordan, Suhr, CH;
Simon Andreas Frutiger, Lenzburg, CH;
Alstom Renewable Technologies, Grenoble, FR;
Abstract
An air-cooled motor-generator () includes a rotor () with a rotor shaft (), which is arranged rotatably about a machine axis () and on which a rotor winding () is arranged, and a stator () with a stator laminate stack () and a stator winding () arranged therein, which concentrically surrounds the rotor winding () A closed cooling circuit operating with cooling air () is provided, with the cooling air in the cooling circuit flowing through the rotor winding () and the stator winding () radially from the inside outwards, the cooling air being cooled in coolers () arranged outside the stator () and being fed back to the rotor (). Cooling which can be changed before or during operation is achieved in a simple manner by virtue of the fact that adjustable throttle devices are provided for adjusting the volume flow of the cooling air in the cooling circuit at the coolers ().