Abstract: The present invention concerns a method and a device for controlling a three-phase motor using a field oriented control system. The invention: —estimates, in a dq plane incremental inductances (I) and (II) of the motor, —determines an incremental saliency (III) of the motor as a ratio between the incremental inductance (I) and the incremental inductance (II), —estimates a first current id* from the estimated incremental saliency (III) and a reference incremental saliency ISR*, —estimates the rotor speed value (IV) of the motor, —estimates a second current iq* from a reference rotor speed value ?*, and the estimated rotor speed value (IV), —controls the voltage applied to the motor according to the first and second estimated currents.

Abstract: The present invention concerns a method and a device for determining a position of a rotor of a three-phase motor using a FOC system. The invention: —determines, by a proportional-integral controller, a first control voltage vector at a first instant, —transforms the first control voltage vector using an inverse Park transform, —sums the transformed first control voltage vector to a regular polygonal voltage pattern applied during a given duration, —performs a PWM from the sum of the transformed first control voltage vector and the regular polygonal voltage pattern, —controls the motor with the pulse-width modulation, —measures the current at each phase of the motor, —estimates the position of the rotor from the measured currents and from the regular polygonal voltage pattern, —determines, at a second instant, a second control voltage vector from the measured currents and from the estimated position.

Abstract: A method for estimating degradation of a wire-bonded power semi-conductor module is provided. The method includes obtaining an indicator of degradation (Degrest_t-1); estimating an estimated indicator of degradation (Degrest_t) by a temporal degradation model; obtaining a set of on-line measure (Xon_meas_t); then, (1) converting the on-line measure (Xon_meas_t) into a deducted indicator of degradation (Degrmeas_t) by an electrical equivalence model, and (2) computing a deviation between estimated and deducted indicator of degradation (Degrest_t; Degrmeas_t); and/or (1) converting the estimated indicator of degradation (Degrest_t) into a set of on-line estimation (Xon_est_t), and (2) computing a deviation between set of on-line measure and estimation (Xon_meas_t; Xon_est_t); and correcting the estimated indicator of degradation (Degrest_t) into a corrected estimated indicator of degradation (Degrcorr_t) as a function of the computed deviation.

Abstract: Method for estimating degradation of a wire-bonded power semiconductor module (1) comprising: •a) obtaining an indicator of degradation (Degrest_t-1); •b) estimating (11) an estimated indicator of degradation (Degrest_t) by a temporal degradation model; •c) obtaining (3) a set of on-line measure (Xon_meas_t); then, •d1) converting (13) the on-line measure (Xon_meas_t) into a deducted indicator of degradation (Degrmeas_t) by an electrical equivalence model, and •e1) computing (15) a deviation between estimated and deducted indicator of degradation (Degrest_t; Degrmeas_t); and/or •d2) converting (13) the estimated indicator of degradation (Degrest_1) into a set of on-line estimation (Xon_est_t), and •e2) computing (15) a deviation between set of on-line measure and estimation (Xon_ meas_t; Xon_est_t); and •f) correcting (17) the estimated indicator of degradation (Degrest_t) into a corrected estimated indicator of degradation (Degrcorr_t) in function of the computed deviation.