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:
Aug. 19, 2008
Filed:
Sep. 17, 2001
Susanne Gaksch, Erlangen, DE;
Kurt Göpfrich, Erlangen, DE;
Peter Heidrich, Nürnberg, DE;
Franz Imrich, Erlangen, DE;
Peter Jänicke, Erlangen, DE;
Susanne Gaksch, Erlangen, DE;
Kurt Göpfrich, Erlangen, DE;
Peter Heidrich, Nürnberg, DE;
Franz Imrich, Erlangen, DE;
Peter Jänicke, Erlangen, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
The invention relates to a drive control for an electric drive with a secure electrical separation of power element and control element. The aim of the invention is to reduce the number of components such as optic couplers and buffer amplifiers between the power element and a control electronics. To this end, a suitable electrical transformer (U) is inserted in a digital communication interface (K) between the control unit (R) and the control electronics (A) for the purpose of providing a secure electrical separation. To make use of a transformer (U) possible, a non-zero frequency encoding, for example a Manchester encoding, is carried out. Alternatively, an Ethernet physics can be used to provide a suitable communication interface. The transformer electrically insulates the two communication paths from each other that are provided in an Ethernet physics and preferably has little coupling capacity and a low attenuation factor.