TY  - JOUR
AB  - Purpose The purpose of this paper is to propose an analytical approach to determine the resistive torque caused by a conductive wall between the rotors of axial permanent magnet couplings. In this configuration, relative motion between the coupling rotors and the wall generates a resistive torque that is a consequence of the induced eddy currents in this barrier. Therefore, such induced resistive torque implies a reduction in the permanent magnet coupling performance, that is, its torque transmission capacity.Design/methodology/approach The developed resistive torque analytical formulation was based on eddy-current brakes of previous studies. To validate the proposed method, tests were conducted in a prototype and results were compared with analytical ones.Findings The analytical method showed a good correlation with the experiment data. Furthermore, a major degradation of the coupling capability to transmit torque was found because of the conductive wall presence, enhancing the importance of predicting such phenomenon when designing these devices.Originality/value A novel direct assessment of the resistive torque while in motion is presented in this paper. These measurements were of great importance to accurately compare the analytical and experimental data.
VL  - 36
IS  - 4
SN  - 0332-1649
DO  - 10.1108/COMPEL-12-2016-0573
UR  - https://doi.org/10.1108/COMPEL-12-2016-0573
AU  - Rezek Matsumoto Thomas
AU  - Chabu Ivan
PY  - 2017
Y1  - 2017/01/01
TI  - Resistive torque in permanent magnet couplings operating through a conductive wall
T2  - COMPEL - The international journal for computation and mathematics in electrical and electronic engineering
PB  - Emerald Publishing Limited
SP  - 1120
EP  - 1133
Y2  - 2024/09/20
ER  -