Investigation Study of the Influence of Pole Numbers on Torque Density and Flux-Weakening Ability of Fractional Slot Concentrated Winding Wheel-Hub Machines
Fractional slot concentrated winding machines (FSCWMs) with the low operation speed and large diameter usually have a large number of poles and slots; thus, numerous pole/slot combinations are feasible. The common practice to choose pole/slot combinations by multiplying the basic combinations may ne...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2019-01-01
|
| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8746231/ |
| _version_ | 1818613286848954368 |
|---|---|
| author | Zichong Zhu Yunkai Huang Jianning Dong Fei Peng |
| author_facet | Zichong Zhu Yunkai Huang Jianning Dong Fei Peng |
| author_sort | Zichong Zhu |
| collection | DOAJ |
| description | Fractional slot concentrated winding machines (FSCWMs) with the low operation speed and large diameter usually have a large number of poles and slots; thus, numerous pole/slot combinations are feasible. The common practice to choose pole/slot combinations by multiplying the basic combinations may neglect some competitive candidates. Taking 36-slot FSCWMs as examples, this paper investigates the influence of pole numbers on torque density and flux-weakening ability, the two most vital performances of wheel-hub machine. It is shown that the machines with pole number slightly less than the slot number have the highest torque densities. Each component of synchronous inductance is separately analyzed, and its variation against pole numbers shows obvious regularity. Machines with pole numbers larger than the slot numbers have an excellent flux-weakening ability due to the large inductance and small permanent magnet flux linkage. The measurements together with the finite element analysis results confirm that the stator leakage inductance contributes the most to the superior flux-weakening ability. The identical analysis is also performed on 54-slot and 81-slot FSCWMs, with similar regularities observed. |
| first_indexed | 2024-12-16T15:59:43Z |
| format | Article |
| id | doaj.art-c1d914e494b048a0a67d11e8a670f54b |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-16T15:59:43Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-c1d914e494b048a0a67d11e8a670f54b2022-12-21T22:25:30ZengIEEEIEEE Access2169-35362019-01-017849188492810.1109/ACCESS.2019.29249678746231Investigation Study of the Influence of Pole Numbers on Torque Density and Flux-Weakening Ability of Fractional Slot Concentrated Winding Wheel-Hub MachinesZichong Zhu0https://orcid.org/0000-0001-8811-6873Yunkai Huang1https://orcid.org/0000-0003-3569-7752Jianning Dong2Fei Peng3School of Electrical Engineering, Southeast University, Nanjing, ChinaSchool of Electrical Engineering, Southeast University, Nanjing, ChinaFaculty of Electrical Engineering, Mathematics, and Computer Science, Delft University of Technology, Delft, The NetherlandsSchool of Electrical Engineering, Southeast University, Nanjing, ChinaFractional slot concentrated winding machines (FSCWMs) with the low operation speed and large diameter usually have a large number of poles and slots; thus, numerous pole/slot combinations are feasible. The common practice to choose pole/slot combinations by multiplying the basic combinations may neglect some competitive candidates. Taking 36-slot FSCWMs as examples, this paper investigates the influence of pole numbers on torque density and flux-weakening ability, the two most vital performances of wheel-hub machine. It is shown that the machines with pole number slightly less than the slot number have the highest torque densities. Each component of synchronous inductance is separately analyzed, and its variation against pole numbers shows obvious regularity. Machines with pole numbers larger than the slot numbers have an excellent flux-weakening ability due to the large inductance and small permanent magnet flux linkage. The measurements together with the finite element analysis results confirm that the stator leakage inductance contributes the most to the superior flux-weakening ability. The identical analysis is also performed on 54-slot and 81-slot FSCWMs, with similar regularities observed.https://ieeexplore.ieee.org/document/8746231/Flux weakeningfractional slot concentrated windingpole numbertorque densitywheel-hub machine |
| spellingShingle | Zichong Zhu Yunkai Huang Jianning Dong Fei Peng Investigation Study of the Influence of Pole Numbers on Torque Density and Flux-Weakening Ability of Fractional Slot Concentrated Winding Wheel-Hub Machines IEEE Access Flux weakening fractional slot concentrated winding pole number torque density wheel-hub machine |
| title | Investigation Study of the Influence of Pole Numbers on Torque Density and Flux-Weakening Ability of Fractional Slot Concentrated Winding Wheel-Hub Machines |
| title_full | Investigation Study of the Influence of Pole Numbers on Torque Density and Flux-Weakening Ability of Fractional Slot Concentrated Winding Wheel-Hub Machines |
| title_fullStr | Investigation Study of the Influence of Pole Numbers on Torque Density and Flux-Weakening Ability of Fractional Slot Concentrated Winding Wheel-Hub Machines |
| title_full_unstemmed | Investigation Study of the Influence of Pole Numbers on Torque Density and Flux-Weakening Ability of Fractional Slot Concentrated Winding Wheel-Hub Machines |
| title_short | Investigation Study of the Influence of Pole Numbers on Torque Density and Flux-Weakening Ability of Fractional Slot Concentrated Winding Wheel-Hub Machines |
| title_sort | investigation study of the influence of pole numbers on torque density and flux weakening ability of fractional slot concentrated winding wheel hub machines |
| topic | Flux weakening fractional slot concentrated winding pole number torque density wheel-hub machine |
| url | https://ieeexplore.ieee.org/document/8746231/ |
| work_keys_str_mv | AT zichongzhu investigationstudyoftheinfluenceofpolenumbersontorquedensityandfluxweakeningabilityoffractionalslotconcentratedwindingwheelhubmachines AT yunkaihuang investigationstudyoftheinfluenceofpolenumbersontorquedensityandfluxweakeningabilityoffractionalslotconcentratedwindingwheelhubmachines AT jianningdong investigationstudyoftheinfluenceofpolenumbersontorquedensityandfluxweakeningabilityoffractionalslotconcentratedwindingwheelhubmachines AT feipeng investigationstudyoftheinfluenceofpolenumbersontorquedensityandfluxweakeningabilityoffractionalslotconcentratedwindingwheelhubmachines |