| 摘要 |
The invention relates to a method for determining an rotor position of a rotary, multi-phase, electrically commutated electrical machine (2), wherein the electrical machine (2) has a plurality of phase conductors (3) to which power can be supplied via phase connections, comprising the following steps: determining (S1, S2) phase voltages and phase currents on phase connections of the electrical machine (2); determining (S6) the induced voltages on the phase connections of the electrical machine (2) from the determined phase voltages and phase currents; and providing the voltage indicator of the induced voltage, determined by the induced voltages, in respect of a Cartesian coordinate system fixed to the stator; characterized in that the space vector angle of the voltage indicator of the induced voltage provided in respect of the Cartesian coordinate system fixed to the stator is rotated by means of calculation by an estimated value of the rotor position (S7); that the rotated voltage indicator is low-pass filtered (S8); and that, based on an angle position of the low-pass filtered, rotated voltage indicator (Uind TPdq *) of the induced voltage, the estimated value of the rotor position is determined for the subsequent calculation cycle. |
