Title :
Analysis of claw-pole rotor brushless machine with DC excitation by lumped-parameter magnetic circuit model
Author :
Yang Shen ; Zhu, Z.Q. ; Chen, J.T. ; Deodhar, Rajesh P.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
Nowadays, the replacement of rare-earth permanent magnet is one of the primary targets to enhance the cost-effective design for electrical machines. A claw-pole rotor brushless machine with DC excitation is desirable as a magnetless machine because it is reliable, low-cost, and does not need slip ring etc. However, the inherent 3D structure makes numerical analysis very time-consuming. In this paper, a lumped-parameter magnetic circuit model is developed to model and design an 18-slot/6-pole claw-pole rotor brushless machine with DC excitation, while its validity is examined by using 3D finite-element analysis. The optimization is also carried out, together with optimal skew and unequal rotor pole thickness.
Keywords :
DC machines; brushless machines; finite element analysis; lumped parameter networks; magnetic circuits; optimisation; reliability; rotors; 3D finite element analysis; DC excitation; claw-pole rotor brushless machine; electrical machine design; inherent 3D structure; lumped-parameter magnetic circuit model; magnetless machine; numerical analysis; optimal skew; optimization; rare-earth permanent magnet replacement; unequal rotor pole thickness; Brushless machines; Electromagnetics; Integrated circuit modeling; Rotors; Stator windings; Torque; Brushless; DC excitation; claw-pole; lumped-parameter magnetic circuit model; skew;
Conference_Titel :
Power Electronics, Drives and Energy Systems (PEDES), 2012 IEEE International Conference on
Conference_Location :
Bengaluru
Print_ISBN :
978-1-4673-4506-4
DOI :
10.1109/PEDES.2012.6484399
