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:
Jan. 12, 2010
Filed:
Jul. 19, 2007
Francois Malrait, Jouy sur Eure, FR;
Stefan Capitaneanu, Mousseaux Neuville, FR;
Francois Malrait, Jouy sur Eure, FR;
Stefan Capitaneanu, Mousseaux Neuville, FR;
Schneider Toshiba Inverter Europe SAS, Pacy-sur-Eure, FR;
Abstract
The invention relates to a method of adjusting motor parameters in a variable speed drive intended for controlling a synchronous electric motor with permanent magnets M. The method comprises a step of determining the deviations ΔIand ΔIbetween references and measurements of the flux current and motor torque current, a step of calculating a correction value ΔRof the stator resistance, a correction value ΔL of the inductance and a correction value ΔKof the flux constant of the motor, on the basis of the integral terms of the deviations ΔIand ΔI, a step of adjusting the values of the parameters of the motor model on the basis of ΔR, ΔL and ΔK, a step of formulating the control voltages Uand Uto be applied to the motor M by using the said adjusted values of the motor parameters.