Eddy-Current Field Analysis in Laminated Iron Cores Using Multi-Scale Model Order Reduction

This article develops a multi-scale model order reduction (MOR) method including both material and machine scale MOR. The material-scale MOR homogenizes the eddy-current (EC) field in laminated cores using the Legendre expansion of magnetic induction along the stacking direction within each steel sheet. The machine-scale MOR represents the EC field in electromagnetic devices with their equivalent Cauer ladder network (CLN). The former MOR is built into the latter by applying the CLN procedure to the homogenized EC field equation.