Fig. 1. Estimated δ axis back-EMF for R variation
Fig. 2. Estimated δ axis back-EMF for L variation
Fig. 3. Magnet flux estimator with HPF
Fig. 4. Error of Estimated back EMF according to parameter variation
Fig. 5. Error of Estimated magnet flux according to parameter variation
Fig. 6. Error of estimated rotor position for back EMF estimator according to parameter variation
Fig. 7. Error of estimated rotor position for magnet flux estimator according to parameter variation
Fig. 8. Experiment set
Fig. 9. Estimated back EMF and real and estimated rotor position at 300rpm
Fig. 10. Estimated back EMF and real and estimated rotor position at 1,800rpm
Fig. 11. Estimated rotor position error at 300rpm
Fig. 13. Position error when resistance error occurs
Fig. 12. Estimated rotor position error at 1,800rpm
Fig. 14. Position error when inductance error occurs
Table 1. Motor parameters
References
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