| 摘要 |
For tracking inherent saliencies of ac machines (2) comprising a stator with windings (3) and a rotor, transient current time derivative changes or transient current changes due to voltage pulses applied, to the stator windings are sensed, and the sensed signals are evaluated to track the saliencies, whereby the transient current changes are sampled with an oversampling rate which is related to the frequency of the transient current derivative changes or the transient current changes, and signal indicators that correspond to the steady state value of the current time derivative are evaluated, that signal indicators containing modulations due to the saliencies. |
