| 摘要 |
A method for determining the speed and position of a rotor of a salient-pole permanent magnet synchronous machine, the method comprising the steps of creating a voltage model (41) on a permanent magnet synchronous machine, forming a voltage reference (u s,ref ) for a stator of the permanent magnet synchronous machine, determining stator currents (i s ) of the permanent magnet synchronous machine, calculating a rotor angular speed (42) from the voltage reference (u s,ref ) and the stator currents (i s ) using the voltage model (41). The method further comprises the steps of forming with signal injection a position tracking signal (µ)of the rotor of the permanent magnet synchronous machine, forming a rotor angular speed estimate ( É m )from the calculated rotor angular speed (42) and the rotor position tracking signal (µ), forming a rotor position angle estimate (¸ m ) from the formed rotor angular speed estimate (É m ) and the rotor position tracking signal (µ). |
