The brushless doubly fed reluctance machine (BDFRM) is a potential low cost alternative to the existing solutions in applications with limited variable speed ranges. The cost eﬀectiveness of the BDFRM drive can be attributed to the possibility of using a partially rated power electronic converter and reliable, maintenance-free operation aﬀorded by the absence of brush gear. This paper proposes a load model based observer algorithm for speed and direct torque (and ﬂux) control (DTC) of this machine without using a shaft position sensor. The preliminary results have demonstrated good controller performance over the desired speed range for diﬀerent loading conditions.
|International Journal of Power and Energy Systems
|Published - 2008