Patent ID: 7923952
Filing Date: 2011-04-12
Classification: H02P

Abstract:
1. A device for controlling a polyphase rotary electrical machine, said machine comprising a stator, a rotor, a first sensor producing a first sensor signal (U; V; W) representing a position of the rotor with respect to the stator and a second sensor producing a second sensor signal (U; V; W) representing the position and offset in phase with respect to the first sensor signal; said control device producing at least one digital control signal (U′, V′, W′) corresponding to one of said first and second sensor signals (U, V, W) with a required phase lead δ with respect thereto; said control device comprising means (K, R) including at least one controlled switching element (K said means (K, R) provided for combining the first and second sensor signals into a combined signal (S