Multi‐objective optimisation of a permanent magnet flux‐switching motor by combined parameter sensitivities analysis with non‐linear varying‐network magnetic circuit method

Abstract

In this study, a new sensitivity analysis based on non-linear varying-network magnetic circuit (VNMC) method is proposed for an outer-rotor I-shaped permanent magnet flux-switching motor. By integrating concept of sensitivity analysis into the non-linear VNMC method, the whole design efficiency can be improved effectively by using the comprehensive sensitivity method and sequential non-linear programming algorithm. In the optimisation process, two design objectives are selected, including machine output torque and torque ripple. Based on the sensitivity analysis, the parameters possessing the significant influence on the design objectives can be selected purposely, thus the overall amount of calculation is obviously reduced. After the determination of the sensitive parameters, the rest of optimisation can be realised efficiently by the non-linear VNMC method. Finally, a prototype motor is manufactured and tested. Both theoretical analysis and experimental results confirm the effectiveness of the proposed method.

Optimal design of the drive motor based on the road condition of the electric vehicle

“…In this article, sequential nonlinear programing is used to optimise the set area, and convergence accuracy is set to 1%. After 175 iterations, the objective function value tends to be stable [13,14].…”

Performance comparisons of alternative permanent‐magnet motor designs for personal mobility‐assistive device applications

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Modified magnetic equivalent circuit of double‐stator single‐rotor axial flux permanent magnet machine considering stator radial‐end flux‐leakage

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