Robust Design Optimization of the Cogging Torque for a PMSM Based on Manufacturing Uncertainties Analysis and Approximate Modeling

A permanent magnet synchronous motor (PMSM) is a crucial device for power conversion in an energy system. The cogging torque of the PMSM output characteristic, robustness which affects operational reliability Therefore, robust design optimization (RDO) has aroused widespread concern. There are several challenges designing PMSM. In particular, some parameters contain repetitive units, and finite element analysis (FEA) method time-consuming. State-of-the-art RDO methods usually treat these uncertainties from units as same parameter, neglects fluctuation manufacturing process cannot obtain solution efficiently accurately. order to solve this issue, approximate modeling based on proposed paper. First, peak-to-peak value (Tcpp) used characterize torque, decoupled ideal component produced by center values tolerances parameters. experiments (DoE) simulation two components carried out. Then, approximated separately, model Tcpp obtained adding components. Finally, embedded into algorithm, scheme good obtained. effectiveness verified through case study