Bezczujnikowe układy napędowe z silnikami indukcyjnymi w zastosowaniach trakcji miejskiej

In the paper the sensorless DTC-SVM for induction motor drive system for tram application is described. To the rotor speed, electromagnetic torque and stator flux vector reconstruction the MRAS type estimator was applied. This estimator is less sensitive to the motor parameter variation than other observers and is stable in the whole speed reference changes. Experimental result was performed for 50kW induction motor in the whole speed and torque regions.