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:
Jan. 27, 2015
Filed:
Jun. 11, 2012
Helmut Lipp, Dörzbach-Hohebach, DE;
Martin Bürkert, Dörzbach-Hohebach, DE;
Christian Kranz, Weikersheim, DE;
Daniel König, Gerabronn, DE;
Helmut Lipp, Dörzbach-Hohebach, DE;
Martin Bürkert, Dörzbach-Hohebach, DE;
Christian Kranz, Weikersheim, DE;
Daniel König, Gerabronn, DE;
EBM-Papst Mulfingen GmbH & Co. KG, Mulfingen, DE;
Abstract
A control circuit () for an electronically commutated, direct current motor (M) without a collector with a semiconductor end stage () which is controlled by an electronic commutation control () via a driver stage () for the time-offset control of the stator coils (U,V,W) of the motor (M) for the purpose of producing a magnetic rotating field for a rotor depending on the rotor rotation position. Two redundant stall protection units () monitor the motor (M) during operation for rotation of the rotor, whereby in the case of a determined stall situation, the first stall protection unit () deactivates the driver stage () and the second stall protection unit () shuts off the supply voltage (U) for the driver stage ().