Adaptive full-order observer with high-frequency signal injection for synchronous reluctance motor drives

Toni Tuovinen, Marko Hinkkanen
2013 2013 International Electric Machines & Drives Conference  
A back-EMF-based position observer for motionsensorless synchronous reluctance motor drives is augmented with high-frequency signal-injection method for improved lowspeed operation. Previously proposed observer structure is further improved to account for the cross saturation in the motor. The combined observer is experimentally evaluated using a 6.7-kW synchronous reluctance motor drive in low-speed operation and under various load conditions. The resulting position error at low speeds and standstill is small.
doi:10.1109/iemdc.2013.6556164 fatcat:rvj6wokucrfefiapf4ix3v2hte