抄録
This paper presents the parameter measurement of the sensorless PMSM using the sensorless drive system. The parameter measurement schemes of the inductances, the winding resistance and the back emf constant are proposed. The inductances are measured by the current responses when the three kinds of switching pat-terns are applied to the motor at the standstill. The winding resistance is obtained by the relation between the reference voltage and the detected current for the constant dc reference current. The measurement of back emf constant is achieved by using the current estimation error of the sensorless drive which is generated by the back emf constant error between the actual motor and the model in the controller.
The effectiveness of the proposed parameter measurement schemes has been verified by the experimental sensorless drive characteristics using the measured parameters.
