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. 27, 2009
Filed:
Oct. 05, 2007
Torsten Franke, Munich, DE;
Torsten Franke, Munich, DE;
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
Electrical machine, having a stator which bears a winding and having a rotatable rotor, situated at a distance from the stator via an air gap, which includes at least two coaxial rotor sections which are rotatable relative to one another, in which each rotor section bears a system of permanent magnets having polarities which alternately point outward radially, and having an actuating device for rotating the rotor sections relative to one another, the actuating device having a controllable actuator via which the rotor sections may be aligned with one another with a variable rotary offset which is independent of a rotational speed of the rotor. In a method for setting the field and armature of a permanently energized electrical machine for motor vehicles, the rotational speed range of the electrical machine is divided into an armature-setting range, and a freely preselected field suppression is associated with a particular rotational speed of the rotor.