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:
May. 09, 2006
Filed:
Jul. 17, 2003
Applicant:
Pierre Vadstrup, Tilst, DK;
Inventor:
Pierre Vadstrup, Tilst, DK;
Assignee:
Grundfos A/S, , DK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01P 3/00 (2006.01); G06F 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The method serves for detecting the magnetic flux, the rotor position and/or the rotational speed of the rotor in a single- or multiphase permanent magnet- or -synchronous motor or -generator using the stator voltage equations  Equation (1)  Equation (2)It is characterized in that with the evaluations one takes into account the energy conditions of the rotor, by which means one may achieve an accuracy which is considerably greater than known methods.