| 摘要 |
A method of estimating stator resistance of a permanent magnet synchronous machine, when the permanent magnet synchronous machine is controlled with an inverter using a control system having an adaptive observer which is augmented with a signal injection, the adaptive observer having a stator resistance estimate (R<SUB>s</SUB>) as a parameter, in which method an error signal (epsilon) is obtained from the signal injection, a speed correction term (omega<SUB>epsilon</SUB>) is calculated from the error signal (epsilon), the rotor position estimate is corrected using the speed correction term (omega<SUB>epsilon</SUB>) in the adaptive observer, whereby the error signal (epsilon) is driven to zero. The method comprises the step of correcting the value of the stator resistance estimate (R<SUB>s</SUB>) in the adaptive observer when the speed correction term (omega<SUB>epsilon</SUB>) differs from zero.
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