METHOD AND REGULATOR FOR ELECTRICAL RELUCTANCE MACHINES

摘要

The invention relates to a process for estimating an instantaneous resistance in a phase winding in a reluctance machine. The process comprises the steps of: receiving a signal (Udm) indicating a voltage (UW) across at least one phase winding; receiving a signal (iWm) indicating a current (iw) through the phase winding; estimating a magnetic flux in response to the voltage signal and the current signal; estimating an instantaneous resistance (RW) in the phase winding in according with a phase relation between the current signal (iWm) and the magnetic flux signal (est). The invention also relates to a method for controlling an electrical machine and a drive system for performing the method.