On-Line Stator Resistance Estimation of Vector-Controlled Synchronous Reluctance Motors Using Inductance Information

• Published in: IEEE Energy Conversion Congress and Exposition pp. 5827 - 5833
• Main Authors: Yamamoto, Shu, Hirahara, Hideaki, Eto, Ryotaro
• Format: Conference Proceeding
• Language: English
• Published: IEEE 11.10.2020
• Subjects: inductance; inverter; stator resistance; synchronous reluctance motor; voltage error
• ISSN: 2329-3748
• DOI: 10.1109/ECCE44975.2020.9235694

An on-line stator resistance estimator for Vector-Controlled Synchronous Reluctance Motor (VC-SynRM) drives is presented. The proposed estimator entails realizing fast, accurate and simple stator resistance estimation by utilizing the property that "stator resistance variation has an influence on the calculation of the flux linkage vector, but has little influence on the optimum current vector selection that maximizes the efficiency." To adopt this strategy to pulse width modulation inverter-fed VC-SynRM, the authors employ a new voltage error compensator. Inductance information, required to implement the proposed estimator, can be determined from an off-line test. Experimental results on a 1.1kW flux-barrier type VC-SynRM in both sinusoidal and inverter drives validate the proposed on-line stator resistance estimator.