| 摘要 |
The invention relates to a method of adjusting motor parameters in a variable speed drive intended for controlling a synchronous electric motor with permanent magnets M. The method comprises a step of determining the deviations DeltaI<SUB>D </SUB>and DeltaI<SUB>Q </SUB>between references and measurements of the flux current and motor torque current, a step of calculating a correction value DeltaR<SUB>S </SUB>of the stator resistance, a correction value DeltaL of the inductance and a correction value DeltaK<SUB>E </SUB>of the flux constant of the motor, on the basis of the integral terms of the deviations DeltaI<SUB>D </SUB>and DeltaI<SUB>Q</SUB>, a step of adjusting the values of the parameters of the motor model on the basis of DeltaR<SUB>S</SUB>, DeltaL and DeltaK<SUB>E</SUB>, a step of formulating the control voltages U<SUB>D </SUB>and U<SUB>Q </SUB>to be applied to the motor M by using the said adjusted values of the motor parameters.
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