Title :
Effect of Axial Segmentation of Permanent Magnets on Rotor Loss in Modular Permanent-Magnet Brushless Machines
Author :
Ede, Jason D. ; Atallah, Kais ; Jewell, Geraint W. ; Wang, Jiabin B. ; Howe, David
Author_Institution :
Sheffield Univ., Sheffield
Abstract :
This paper presents a computationally efficient technique in determining the influence of the finite axial length of the permanent magnets on the rotor eddy-current loss in modular brushless ac machines. The technique is employed to quantify the effectiveness of axially segmenting the permanent magnets of four-phase, eight-slot, ten-pole and five-phase, ten-slot, 12-pole brushless machines, which have been designed to meet the performance requirements of an electromechanical flight control surface actuator for a "more-electric" aircraft.
Keywords :
brushless machines; eddy current losses; permanent magnet machines; axial segmentation effect; computationally efficient technique; electromechanical flight control surface actuator; finite axial length; modular brushless ac machines; more-electric aircraft; permanent magnets; permanent-magnet brushless machines; rotor eddy-current loss; rotor losses; AC machines; Actuators; Aerospace control; Aircraft; Brushless machines; Eddy currents; Magnetic losses; Permanent magnets; Stators; Torque; Eddy currents; permanent-magnet machines;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2007.904397
