Sensorless control of an axial flux permanent magnet motor drive is proposed and tested. The motor is not purposely designed for sensorless control and shows a very small inherent saliency. This significantly affects the saliency-based position estimation in the low speed region. Other non-idealities, such as the non-sinusoidal back-EMF waveforms and possible misalignment between stator and rotor make the control more challenging. A robust sensorless control scheme is proposed, able to deal with these non-idealities with a rather simple implementation. The position estimation is based on a closed loop hybrid observer of the permanent magnet flux linkage. Experimental results report torque and speed sensorless control.
|Titolo:||Hybrid sensorless control of axial flux permanent magnet motor drives, including zero speed|
|Data di pubblicazione:||2011|
|Nome del convegno:||14th European Conference on Power Electronics and Applications, EPE 2011|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|