A simple modelling on transmission torque of eddy‐current axial magnetic couplings considering thermal effect

Xikang Cheng, Wei Liu, Weiqi Luo, Minghao Sun, Yang Zhang
2021 IET electric power applications  
This paper proposes modelling on the transmission torque of an eddy-current axial magnetic coupling (EAMC) considering the thermal effect. A new and simple equivalent reluctance network is established to obtain the magnetic flux density based on the twodimensional (2D) finite-element analysis. Furthermore, the expressions of the transmission torque and the thermal loss are derived by establishing the computational coordinate system for the conductor sheet (CS) eddy current. Then, a simple and
more » ... fective thermal network considering different convective heat transfer modes is presented to obtain the temperature rise, and the influence of temperature on some key parameters is given to correct the transmission torque. Furthermore, the proposed modelling is in good agreement with the three-dimensional (3D) finite-element method (FEM) and experiments under normal working conditions. Moreover, some suggestions for the design and optimization of EAMCs are provided. K E Y W O R D S eddy-current axial magnetic coupling (EAMC), permanent magnet (PM), reluctance, thermal effect, transmission torque This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
doi:10.1049/elp2.12165 fatcat:lomwfmt255emfoatsthbzeuvje