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

fYear

2011

fDate

20-23 Aug. 2011

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2011 International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4577-1044-5

Type

conf

DOI

10.1109/ICEMS.2011.6073578

Filename

6073578