Title :
A permanent magnet rotor containing an electrical winding to improve detection of motor angular position
Author :
Nondahl, Thomas A. ; Ray, Glen ; Schmidt, Peter B.
Author_Institution :
Adv. Technol. Labs., Rockwell Autom., Milwaukee, WI, USA
Abstract :
Sensorless detection of rotor angular position is desirable for decreasing the cost and increasing the reliability of permanent magnet AC motor drive systems. This paper describes tests performed on a rotor that has surface mounted magnets and a conducting winding that links only the d-axis of the rotor. The conducting winding allows rotor angular position to be detected by stator-winding inductance variations.
Keywords :
inductance measurement; parameter estimation; permanent magnet motors; rotors; stators; synchronous motors; AC motor drive systems; conducting winding; d-axis; electrical winding; motor angular position detection; permanent magnet rotor; permanent magnet synchronous motors; reliability; sensorless position detection; stator-winding inductance variations; surface mounted magnets; AC motors; Bars; Inductance; Magnetic flux; Permanent magnet motors; Permanent magnets; Rotors; Stator windings; Synchronous motors; Testing;
Conference_Titel :
Industry Applications Conference, 1998. Thirty-Third IAS Annual Meeting. The 1998 IEEE
Conference_Location :
St. Louis, MO, USA
Print_ISBN :
0-7803-4943-1
DOI :
10.1109/IAS.1998.732319
