Abstract
A post 1-D analysis of laminated cores is developed for estimating the torque and loss in rotating machines. The 1-D nonlinear eddy-current analysis along the thickness of electrical steel sheets is carried out at each element in the main finite-element analysis in order to estimate the loss and the harmonic torques caused by the eddy currents and the hysteresis phenomenon in the core. The proposed method is applied to several kinds of rotating machines. It is revealed that the accuracies of the torque and loss are significantly improved by the proposed method as compared to those of the conventional finite element method without notable increase in the computation time.
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