Abstract

In this paper a novel IPM motor rotor position extraction method using two reference-frames based on carrier frequency component signal, derived from PWM inverter switching, is presented. The method is utilized for IPM motor sensorless vector-control, extracting rotor position angle from switching carrier frequency (10 kHz) component current. The performance of two IPM motors' sensorless control when this method is used have been investigated. Experimental results demonstrating good dynamic and steady state performance achieved are presented and discussed.

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