Title :
A Novel E-Core Switched-Flux PM Brushless AC Machine
Author :
Chen, J.T. ; Zhu, Z.Q. ; Iwasaki, S. ; Deodhar, Rajesh P.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK
Abstract :
A novel E-core switched-flux permanent-magnet (SFPM) brushless machine is proposed, and its electromagnetic performance is compared with that of the conventional SFPM brushless machine. The operation principle of the E-core SFPM machine will be first described, and the influence of stator and rotor pole number combinations is investigated, while the electromagnetic performance of the optimized E-core SFPM machine is predicted by finite-element analyses and validated by experiment. It is shown that the number and volume of magnets in the E-core SFPM machine is significantly reduced, only half of that in the conventional machine, while the phase back electromotive force and torque of the E-core machine are ~15% larger than those of the conventional machine.
Keywords :
brushless machines; finite element analysis; permanent magnet machines; torque; E-core SFPM brushless machine; E-core switched-flux PM brushless AC machine; electromagnetic performance; finite-element analyses; phase back electromotive force; stator-rotor pole number combinations; torque; Coils; Magnetic flux; Rotors; Stator windings; Teeth; Torque; Brushless; fault tolerant; permanent magnet (PM); switched flux; torque density;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2011.2126543
