Fast computing tool for performance evaluation in Interior Permanent Magnet machines

This paper proposes a fast computing tool for performance evaluation of electrical machines where a combination of Finite-Element (FE) method and mathematical approximations are used to predict iron losses and eddy current losses in the magnets in addition to torque-speed characteristics. The adopted tool is based on FE and computes the complete machines´ characteristic analytically without any further FE computation. For the initial analysis and model verification a 16-pole 24-slot Interior Permanent Magnet (IPM) is adopted. The results obtained, compared to completely FE-based solution show that the proposed tool predicts the electromagnetic losses effectively within less computation time.