Title :
Impacts of cross-saturation on sensorless control of surface permanent magnet synchronous motors
Author_Institution :
Erlangen-Nurnberg Univ., Erlangen
Abstract :
Cross-magnetisation complicates the sensorless control of non-salient AC machines, like surface magnet synchronous motors. The motor currents influence position estimation techniques for low speed based on "saturation induced" saliencies. This paper considers cross-saturation effects to explain the magnetic-axis shift under loaded conditions and discusses the influence of the operating point on the saliency. A finite element analysis and lab measurements validate the results
Keywords :
finite element analysis; machine control; magnetisation; permanent magnet motors; synchronous motors; cross-magnetisation; finite element analysis; magnetic-axis shift; nonsalient AC machines; position estimation techniques; saturation induced saliency; sensorless control cross-saturation; surface permanent magnet synchronous motors; Equations; Magnetic flux; Permanent magnet motors; Rotors; Saturation magnetization; Sensorless control; Stators; Synchronous motors; Traction motors; Voltage; Modelling; Permanent magnet motor; Sensorless control; Synchronous motor; Traction application;
Conference_Titel :
Power Electronics and Applications, 2005 European Conference on
Conference_Location :
Dresden
Print_ISBN :
90-75815-09-3
DOI :
10.1109/EPE.2005.219331
