Title :
Electromagnetic modelling of a rolling rotor actuator
Author :
Xia, Z.P. ; Zhu, Z.Q. ; Howe, David
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ.
fDate :
11/1/1993 12:00:00 AM
Abstract :
An analytical technique is developed for the prediction of the instantaneous magnetic field distribution in the asymmetric airgap of a rolling-rotor actuator having an interior stator. It combines a lumped magnetic circuit model with an analysis which is based on MMF/permeance. The developed model accounts for the effect of both rotor eccentricity and stator slotting and was applied to the calculation of the winding inductances. Analytical calculations are shown to be in good agreement with finite element predictions
Keywords :
electric actuators; electromagnetic devices; inductance; magnetic circuits; rotors; EM actuator; EM modelling; MMF; asymmetric airgap; finite element predictions; instantaneous magnetic field distribution; interior stator; lumped magnetic circuit model; permeance; rolling rotor actuator; rotor eccentricity; stator slotting; winding inductances; Actuators; Assembly; Coils; Electromagnetic modeling; Magnetic analysis; Magnetic fields; Magnetic flux; Rotors; Stators; Teeth;
Journal_Title :
Magnetics, IEEE Transactions on
