Title :
On the evolution of AC machines for spindle drive applications
Author :
Fratta, A. ; Vagati, A. ; Villata, F.
Author_Institution :
Dept. of Electr. Eng., Polytech. of Torino, Italy
Abstract :
The authors analyze the suitability of a synchronous motor as compared to an induction motor by considering the machine torque-density and the inverter power size needed for a given constant-power speed range. It is shown that an axially laminated reluctance motor gives more torque-density than the induction motor, but requires nearly the same inverter size. The addition of a proper quantity of permanent magnets allows the inverter size to be greatly reduced. A comprehensive discussion is made on this subject, with the aim of pointing out a design solution optimal for the whole drive.<>
Keywords :
AC motors; electric drives; invertors; permanent magnet motors; AC machines; axial lamination; design; electric drives; induction motor; inverter power size; machine torque-density; permanent magnets; reluctance motor; spindle drive; synchronous motor; AC machines; Inductance; Induction motors; Inverters; Magnetic anisotropy; Magnetic flux; Perpendicular magnetic anisotropy; Reluctance motors; Rotors; Stators;
Conference_Titel :
Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE
Conference_Location :
San Diego, CA, USA
DOI :
10.1109/IAS.1989.96725
