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:
Aug. 27, 2013
Filed:
Jun. 23, 2009
Duro Basic, Wollongong, AU;
Stefan Capitaneanu, Mousseaux Neuville, FR;
Francois Malrait, Jouy sur Eure, FR;
Duro Basic, Wollongong, AU;
Stefan Capitaneanu, Mousseaux Neuville, FR;
Francois Malrait, Jouy sur Eure, FR;
Schneider Toshiba Inverter Europe SAS, Pacy sur Eure, FR;
Abstract
The invention relates to a control method implemented in a variable speed drive for determining the inductances (Ld, Lq) of a permanent magnet synchronous machine comprising three phases (a, b, c), each oriented along a direction, a stator, and a rotor. For each phase, one after the other, said method includes steps of: applying, along the direction of the phase (a, b, c), a voltage vector (V, V, V) in the positive direction and a voltage vector (V, V, V) in the negative direction for a predetermined duration; measuring the current obtained in the phase after applying the voltage vectors in both directions; determining an angle (θ) for the position of the rotor in relation to the stator based on the measured current; and determining the flow (Ld) and torque (Lq) inductances of the machine based on the predetermined angle (θ).