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. 19, 2019
Filed:
Sep. 18, 2015
Robert Bosch Gmbh, Stuttgart, DE;
Ekard Grossmann, Stuttgart, DE;
Marcus Abele, Schwieberdingen, DE;
Torsten Heidrich, Vaihingen/Enz, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method and to a device for changing from the idle operating state of an electric motor () having three phase terminals (---) to a short-circuit operating state. Thereby significant voltage rises are avoided. For this purpose, after receiving () a request for changing of the operating state of the electric motor () to the short-circuit operating state, three switching elements (---) are closed. Thereby the switching elements (---) are at least partially closed successively and the times of closing the individual switching elements are predetermined as a function of control parameters of the electric motor.