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:
Jun. 14, 2005
Filed:
Dec. 21, 2001
Hansjörg Berroth, VS-Obereschach, DE;
Alexander Hahn, Sauldorf, DE;
Frank Heller, St. Georgen, DE;
Frank Jeske, St. Georgen, DE;
Arno Karwath, Rottweil, DE;
Arnold Kuner, St. Georgen, DE;
Hans-dieter Schondelmaier, St. Georgen, DE;
Hermann Rappenecker, Vöhrenbach, DE;
Günther Strasser, St. Georgen, DE;
Hansjörg Berroth, VS-Obereschach, DE;
Alexander Hahn, Sauldorf, DE;
Frank Heller, St. Georgen, DE;
Frank Jeske, St. Georgen, DE;
Arno Karwath, Rottweil, DE;
Arnold Kuner, St. Georgen, DE;
Hans-Dieter Schondelmaier, St. Georgen, DE;
Hermann Rappenecker, Vöhrenbach, DE;
Günther Strasser, St. Georgen, DE;
ebm-papst St. Georgen GmbH & Co. KG, St. Goergen, DE;
Abstract
An electronically commutated motor has a rotor (), a stator having a stator winding arrangement (), and a full bridge circuit () for controlling the current (i, i) in the stator winding arrangement (); in the full bridge circuit (), first semiconductor switches () are connected to a first DC supply lead () and second semiconductor switches () to the other DC supply lead (), said second switches being bidirectionally conductive of current in the switched-on state. The motor has an arrangement () for opening the first semiconductor switches () and for closing the second semiconductor switches () during a predetermined operating state. An arrangement () is provided for monitoring the direction of the current (i, i) which flows in the second semiconductor switches () when the latter are conductive during the predetermined operating state.