| 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 ({circumflex over (R)}s) as a parameter, in which method an error signal (&egr;) is obtained from the signal injection, a speed correction term (ω&egr;) is calculated from the error signal (&egr;), the rotor position estimate is corrected using the speed correction term (ω&egr;) in the adaptive observer, whereby the error signal (&egr;) is driven to zero. The method comprises the step of correcting the value of the stator resistance estimate ({circumflex over (R)}s) in the adaptive observer when the speed correction term (ω&egr;) differs from zero.
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