粗視化磁気ビーズ法を用いた永久磁石電動機の磁場機構連成解析

抄録

In this paper, we discuss a fast simulation method for magnetic-mechanical coupling analysis of a large scale Interior Permanent Magnet (IPM) motor by using the coarse-grained Magnetic Beads Method (MBM). The magnetic field distribution of the IPM motor gradually changes in the direction of motor rotation axis. The coarse grained model is applied only in the motor rotation axis, and reduces the total number of beads while maintaining the sufficient calculation accuracy. We apply the coarse grained MBM to a high power density IPM motor. When the number of beads in the direction of motor rotation axis is larger than 3, it is confirmed that the relative calculation error of averaged torque is - 6.7 [%] compared with experiments. The calculation speed is 800 times higher than the non-coarse-grained model.