Title :
Magnetic Field Solution in Doubly Slotted Airgap of Conventional and Alternate Field-Excited Switched-Flux Topologies
Author :
Gaussens, Benjamin ; de la Barriere, Olivier ; Hoang, E. ; Saint-Michel, Jacques ; Manfe, Philippe ; Lecrivain, M. ; Gabsi, Mohamed
Author_Institution :
SATIE, ENS Cachan, Cachan, France
Abstract :
A general solution of the magnetic field in the airgap of conventional and alternate field-excited switched-flux (FE-SF) machines is proposed in this paper. The analytical model is based on the subdomain method. It involves the solution of governing field equations in a doubly slotted airgap using the variable separation method. The complete model is derived and described in a general manner so that it can be easily extended to unconventional FE-SF topologies. By means of example, analytical predictions of airgap field are extensively compared and validated using 2D FE results. FE simulations were performed on a 24-10 classical FE-SF structure and also on a novel 18-11 FE-SF machine with additional spacer teeth.
Keywords :
electric machines; finite element analysis; 18-11 FE-SF machine; 24-10 classical FE-SF structure; 2D FE; FE simulation; FE-SF machines; airgap field; alternate field-excited switched-flux topology; conventional field-excited switched-flux topology; doubly-slotted airgap; governing field equation; magnetic field solution; spacer teeth; subdomain method; unconventional FE-SF topology; variable separation method; Exact analytical calculation; Poisson Laplace´s equation; flux-switching; slotting effect; switched-flux;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2254122
