Electronically Commutated multi-phase synchronous machine

Abstract

An electronically commutated polyphase synchronous machine has a rotor (13) and a stator (14) which carries a stator winding (15); the stator has a switching device (10) having a plurality of semi-conductor switches (T1-T6) which are assigned to the individual winding phases (151-153) of the stator winding (15); the switching device is used for connecting the stator winding (15) to a direct voltage system (11), and a commutation device (17) for sequential triggering of the semiconductor switches (T1-T6) using switching signals which are derived from rotor angular position signals. For sensorless detection of the angular position of the rotor, auxiliary windings (181-183) are situated in the stator (14), which are each inductively coupled to a winding phase (151-153), and the rotor angular position signals are derived from voltages induced in the auxiliary windings (181-183).

Dependencies are inferred from the claim text.