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:
Jul. 27, 2010
Filed:
Oct. 16, 2007
Andreas Buente, Rheda-Wiedenbrueck, DE;
Lars Kauke, Froendenberg, DE;
Dirk Fedder, Bochum, DE;
Moog Unna GmbH, Unna, DE;
Abstract
An activation circuit and a method for operating an activation circuit for a DC motor having an electrically actuated stopping brake, in particular for adjusting a rotor blade of a wind or water power facility. The activation circuit includes an emergency operation supply unit and a three-phase bridge inverter. The emergency operation supply unit is connected so it is disconnectable via an emergency operation network switching element to the intermediate circuit of the three-phase bridge inverter, the DC motor is connected via an emergency operation motor changeover element either to the three-phase bridge inverter or to the emergency operation supply unit, and the stopping brake is connected via an emergency operation brake changeover element either to the three-phase bridge inverter or to the emergency operation supply unit.