A sensorless control of a PM synchronous motor under the parameter variation is presented The rotor position is estimated by using the d-axis and q-axis current errors between the real system and motor model of the estimator The stator resistance is m...
A sensorless control of a PM synchronous motor under the parameter variation is presented The rotor position is estimated by using the d-axis and q-axis current errors between the real system and motor model of the estimator The stator resistance is measured at low speeds when the motor changes Its rotating direction The gains 10 the position estimator are also adapted according to the motor speeds