Implementation of a MFAC based position sensorless drive for high speed BLDC motors with nonideal back EMF.

In order to improve the reliability and reduce power consumption of the high speed BLDC motor system, this paper presents a model free adaptive control (MFAC) based position sensorless drive with only a dc-link current sensor. The initial commutation points are obtained by detecting the phase of EMF zero-crossing point and then delaying 30 electrical… CONTINUE READING