Title :
A fast lumped parameter model for magnet skew in a motor
Author :
Wang, Jim-Po ; Lieu, Dennis K.
Author_Institution :
Dept. of Mech. Eng., California Univ., Berkeley, CA, USA
fDate :
9/1/1999 12:00:00 AM
Abstract :
Magnet skewing is a straightforward technique to minimize detent torque. An existing fast design package for permanent magnet motors is modified to examine the influence of magnet skew on detent torque, axial force, and back EMF. Magnetic lumped parameter modeling takes care of this 3-D problem by using the sense of average in the axial direction. Permeances representing the air gap and magnets are modified as well as the function describing the magnetic motive force distribution in the air gap
Keywords :
lumped parameter networks; machine theory; magnetic forces; permanent magnet motors; torque; PM motors; air gap; axial direction; axial force; back EMF; detent torque; fast design package; fast lumped parameter model; magnet skew; magnetic lumped parameter modeling; magnetic motive force distribution; permanent magnet motors; permeances; sense of average; spindle motor; Application software; Drives; Fourier series; Magnetic analysis; Packaging; Permanent magnet motors; Permanent magnets; Rotors; Stators; Torque;
Journal_Title :
Magnetics, IEEE Transactions on
