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AssigneeValeo Equipements Electriques Moteur
InventorsSidath DIAO, Zaatar MAKNI, Demba DIALLO
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The method according to the invention enables the diagnosis (15, 16) 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 (îd, lq) between measurements provided (14) by the sensors, and nominal values of the phase currents (ia, ib, ic) in order to diagnose defects. The differences are calculated (18) in a rotating Park reference frame (17) and are separate from an electromechanical model of the machine. The method detects sensor defects if the differences are substantially non-zero (19) and an offset sensor defect if a residual pulsation (ω res) of the differences is substantially equal to a measured speed (w) of the control system.
Method (15, 16) for diagnosing defects of phase current sensors (10) in a control system (1) of a synchronous rotary electrical machine (2) of a motor vehicle, wherein said method takes into account differences Id, Iq between measurements provided (14) by said sensors (10) and nominal values of said phase currents (Ia, Ib, Ic) in order to diagnose defects if said differences Id, Iq are substantially non-zero (19), said differences Id, Iq being calculated (18) in a rotating Park reference frame (17) and being separate from an electromechanical model of said machine (2), a faulty sensor among said sensors (10) being identified by comparing to a measured electrical angle θ of said control system (1) a residual electrical angle θres defined by the equation:
Dependencies are inferred from the claim text.