In this article, a new magnetic equivalent circuit (MEC) model was presented to predict torque characteristics and reaction flux in slotted-type eddy-current couplings (SECs). The magnetomotive force and reaction field caused by eddy current in the conductor were innovatively introduced into the model; particularly, the modulations of the magnetic field and eddy current by iron teeth in conductor disk were taken into account by dividing magnetic flux paths in air gap into several branches. The expressions of magnetic flux and torque were obtained by combining Kirchhoff’s law and Ampere’s loop law. The torque was calculated using the method proposed and was compared with those obtained by the 3-D finite element method (FEM) and experiment, respectively. The results indicated that the method proposed is accurate and effective under conditions of low slip speeds and short air gap lengths.

中文翻译：

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使用新的磁等效电路模型分析开槽型涡流耦合器的扭矩特性

在本文中，提出了一种新的磁等效电路 (MEC) 模型来预测开槽型涡流耦合 (SEC) 中的转矩特性和反应通量。模型中创新地引入了导体中涡流引起的磁动势和反作用场；特别是，通过将气隙中的磁通路径分成几个分支，考虑了导体盘中铁齿对磁场和涡流的调制。结合基尔霍夫定律和安培环路定律，得到磁通量和转矩的表达式。使用所提出的方法计算扭矩，并分别与通过 3-D 有限元方法 (FEM) 和实验获得的扭矩进行比较。