Valeo Equipments Electriques Moteur

Demba Diallo

Zaatar Makni

Sidath Diao

The method according to the invention enables the diagnosis () of phase current sensor defects in a system for controlling a synchronous rotary electrical machine of a motor vehicle. According to the invention, the method takes into account the differences (&#xee;d, lq) between measurements provided () by the sensors, and nominal values of the phase currents (ia, ib, ic) in order to diagnose defects. The differences are calculated () in a rotating Park reference frame () and are separate from an electromechanical model of the machine. The method detects sensor defects if the differences are substantially non-zero () and an offset sensor defect if a residual pulsation (&#x3c9; res) of the differences is substantially equal to a measured speed (w) of the control system.

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Palaiseau, France

Demba Diallo