Performance analysis and comparison of PMSM with concentrated winding and distributed winding

摘要

The concentrated winding (CW) is obviously different from the traditional dis-tributed winding (DW) in the arrangement of windings and the calculation of windingfactors, which will inevitably lead to different performances of the permanent magnet syn-chronous motor (PMSM). In order to analyze the differences between the CW and the DWin the performance, a 3 kW, 1500 r/min PMSM is taken as an example to establish a 2-Dfinite element model. The correctness of the model is verified by comparing experimentaldata and calculated data. Firstly, the finite element method (FEM) is used to calculate theelectromagnetic field of the PMSM, and the performance parameters of the PMSM areobtained. On this basis, the influences of the two winding structures on the performanceare quantitatively analyzed, and the differences between the two winding structures on theperformanceofthePMSMwillbedetermined.Finally,thedifferencesofefficiencybetweenthetwowindingstructuresareobtained.Inaddition,theinfluencesofthewindingstructureson eddy current loss are further studied, and the mechanism of eddy current loss is revealedby studying the eddy current density. The analysis of this paper provides reference andpractical value for the optimization design of the PMSM.