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. 28, 2016
Filed:
Oct. 29, 2012
Siemens Aktiengesellschaft, Munich, DE;
Marcel Benecke, Magdeburg, DE;
SIEMENS AKTIENGESELLSCHAFT, Munich, DE;
Abstract
A method is disclosed for operating a synchronous machine via a three-phase power controller including three semiconductor controllers and connected to a three-phase network. The method includes determining the phase difference between the magnet-wheel voltage of the synchronous machine and the network voltage of the three-phase network; determining the rotational speed of the rotor of the synchronous machine; determining the phase position of the three-phase network; determining at least some of the stator currents of the synchronous machine; determining a decision characteristic number based upon an advance calculation of the torque curve in the event of activation of at least two of the semiconductor controllers while taking into account the current values for phase difference, rotational speed, stator current, and phase position; and determining at least one switching time point based upon the decision characteristic number, wherein the at least two semiconductor controllers are activated at the switching time point.