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:
Dec. 11, 2012
Filed:
Apr. 16, 2010
Duro Basic, Pacy sur Eure, FR;
Francois Malrait, Jouy sur Eure, FR;
Pierre Rouchon, Meudon, FR;
Schneider Toshiba Inverter Europe SAS, Pacy-sur-Eure, FR;
Abstract
The invention relates to a method for determining the position of a rotor flux vector of an electric motor (M), comprising a step of injecting a first current vector into a first reference frame (x, y) rotating at a first frequency (Ω) relative to a reference frame (d, q) synchronous with the rotation of the motor, and a second current vector into a second injection reference frame (x, y) rotating at a second frequency opposite to the first frequency, a step of determining a first stator flux induced voltage delivered at the output of a first integrator module () synchronous with the first reference frame (x, y) and a second stator voltage delivered at the output of a second integrator module () synchronous with the second reference frame (x, y), a step of regulating the position of the rotor flux vector by minimizing the error (ε) between a real position and an estimated position (θ) of the rotor flux vector, the error being determined based on the second induced voltage.