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Applicability of fractional slot axial flux permanent magnet synchronous machines in the field weakening region
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Hemeida, Ahmed, Taha, Mohamed, Abdallh, Ahmed A.-E., Vansompel, Hendrik, Dupre, Luc and Sergeant, Peter (2017) Applicability of fractional slot axial flux permanent magnet synchronous machines in the field weakening region. IEEE Transactions on Energy Conversion, 32 (1). pp. 111-121. doi:10.1109/TEC.2016.2614011 ISSN 0885-8969.
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Official URL: http://dx.doi.org/10.1109/TEC.2016.2614011
Abstract
In this paper, a complete sensitivity analysis of the optimal parameters for the axial flux permanent magnet synchronous machines working in the field weakening region is implemented. Thanks to the presence of a parameterized accurate analytical model, it is possible to obtain all the required parameters of the machine. The two goals of the ideal design are to maximize the power density: Pdensity and the ratio of maximal to rated speed: nmax/nr, which is an inductance related parameter keeping the efficiency at the target speed above 90%. Different slots/poles/phases combinations are studied to reveal the optimum combination for each phase. This paper has studied the effect of the ratio of number of stator slots to number of rotor poles on the Pdensity and nmax/nr. It is shown that a low value of this parameter results in a better Pdensity and nmax/nr. The effect of the outer diameter, and the inner to outer diameter ratio are studied with respect to the two design goals. In addition, a comparison between the finite and the theoretical infinite speed designs is implemented. A complete 3D finite element validation has proven the robustness of the analytical model.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
| Journal or Publication Title: | IEEE Transactions on Energy Conversion | ||||||||
| Publisher: | IEEE | ||||||||
| ISSN: | 0885-8969 | ||||||||
| Official Date: | March 2017 | ||||||||
| Dates: |
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| Volume: | 32 | ||||||||
| Number: | 1 | ||||||||
| Page Range: | pp. 111-121 | ||||||||
| DOI: | 10.1109/TEC.2016.2614011 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access |
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