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:
Apr. 10, 2007
Filed:
Mar. 29, 2006
Fabrice Jadot, Pacy sur Eure, FR;
Francois Malrait, Jouy sur Eure, FR;
Rodolphe Sepulchre, Neupre, BE;
Fabrice Jadot, Pacy sur Eure, FR;
Francois Malrait, Jouy sur Eure, FR;
Rodolphe Sepulchre, Neupre, BE;
Schneider Toshiba Inverter Europe SAS, Pacy-sur Eure, FR;
Abstract
The invention concerns a method for adjusting motor parameters in a variable speed drive intended to control an electric induction motor M. The method includes a step for determining differences ΔIand ΔIbetween motor flux current and motor torque current references and measurements, a step for calculating a correction value ΔRof the rotor resistance and a correction value ΔLof the rotor inductance from the integral terms of the differences ΔIand ΔI, a step for adjusting values of parameters of the motor model based on ΔLand ΔR, a step for generating control voltages Uand Uto be applied to the motor M using said adjusted motor parameter values.