Title :
Potentials and limits of high-speed PM motors
Author :
Bianchi, Nicola ; Bolognani, Silverio ; Luise, Fabio
Author_Institution :
Dept. of Electr. Eng., Univ. of Padova, Italy
Abstract :
This paper illustrates potentials and limits of high-speed permanent-magnet (PM) motors. The influence of materials chosen for PM, stator core, and retaining sleeve is highlighted. Slotted and slotless topologies are considered and compared, computing magnetic, electrical, mechanical, and thermal quantities by means of both analytical and finite-element approach. Thermal and PM demagnetization limits as well as rotor losses are evaluated. A criteria of optimization of the motor structure is described, with the diameter ratio and the iron flux density as main design variables.
Keywords :
cores; demagnetisation; finite element analysis; optimisation; permanent magnet motors; stators; electrical quantity; finite element method; high-speed drive; high-speed permanent magnet motor; iron flux density; magnetic quantity; mechanical quantity; optimization; permanent magnet demagnetization; retaining sleeve; rotor loss; slotless topology; slotted topology; stator core; thermal demagnetization; thermal quantity; Demagnetization; Design optimization; Finite element methods; Magnetic analysis; Magnetic flux; Magnetic materials; Permanent magnet motors; Rotors; Stator cores; Topology; 211;magnet; 65; FE; Finite-element; PM; analysis; high-speed motor; motor; motor analysis and design; motor optimization; permanent&#;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2004.836173
