Title :
Torque analysis of axial flux PM type eddy current brake based on analytical field computations
Author :
Choi, Jang-Young ; Shin, Hyeon-Jae ; Park, Yu-Seop ; Jang, Seok-Myeong
Author_Institution :
Dept. of Electr. Eng., Chungnam Nat. Univ., Daejeon, South Korea
Abstract :
This paper deals with torque analysis of axial flux permanent magnet (AFPM) type eddy current brake (ECB) based on analytical field computation. On the basis of a magnetic vector potential and a two-dimensional (2-D) polar coordinate system, analytical solutions for normal and tangential flux density due to permanent magnet (PM) considering eddy current effect are obtained. And then, using derived analytical field solutions, braking torque and normal force characteristics according to rotor speed are also predicted. A three-dimensional (3-D) finite element (FE) analysis is employed to confirm the validity of analyses. Finally, this paper investigates influence of design parameters on the performances of the AFPM type ECB.
Keywords :
computational electromagnetics; eddy current braking; finite element analysis; permanent magnet motors; permanent magnets; rotors; torque; 2D polar coordinate system; 3D finite element analysis; AFPM; analytical field computations; axial flux permanent magnet; braking torque; eddy current brake; magnetic vector potential; rotor; tangential flux density; Eddy currents; Force; Iron; Magnetic fields; Magnetic flux; Rotors; Torque;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073578
