Multi-objective Optimization Design and Verification of Interior Permanent Magnet Synchronous Generator Based on Finite Element Analysis and Taguchi Method

This paper proposes the optimal design process of an interior permanent magnet synchronous generator (IPMSG) for wind power systems using the finite-element analysis (FEA). A multi-objective optimization design of PM generator based on Taguchi method is proposed. This paper takes into consideration as a design parameters the influence of the pole arc angle, magnet inset, magnet thickness, magnet width, stator tooth width and slot depth. The main characteristics of generator efficiency, torque ripple and output power are taken as optimization objectives. The orthogonal matrix is established according to the number of selected parameters and the level factor of each parameter. Also, FEM is used to solve the experimental matrix. As a result, an improved generator was designed and selected, which had higher maximum output power and efficiency and lower torque ripple. Finally, a prototype IPMSG was manufactured based and tested on results analysis and Taguchi method. The experimental tests were conducted to verify the validity of the proposed design process and the effectiveness of the generator and as a result, perfectly cleared the optimization design.