محاسبه تحلیلی برای پیش بینی از دست دادن هسته دستگاه مگنت دائمی ثابت

The core loss is an important component in the design of machine. In the paper, a new analytical model of flux density at various operating point for surface-mounted permanent magnet synchronous machines is proposed by the equivalent magnetic circuit method. Based on the analytical model of flux density, the core loss was calculated by Bertotti's formula. In order to verify the accuracy of the proposed analytical method for core loss, experiment and finite element Analysis (FEA) are used. It shows that the analytical results for core loss can keep consistency well with the experimental result and FEA results. Thus, the analytical model for core loss is suitable for machine optimization.