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| Content Provider | IET Digital Library |
|---|---|
| Author | Gundogdu, Tayfun Zhu, Zi Qiang Mipo, Jean Claude |
| Abstract | This study investigates the influence of stator coil pitch on the electromagnetic performance of squirrel-cage induction machine (IM) with emphasis on the flux-weakening (FW) capability for electric vehicle applications. Three different winding topologies, obtained by changing the coil pitch, namely integer-slot distributed winding (ISDW), integer-slot concentrated winding, and fractional-slot concentrated winding (FSCW), are studied. Their merits and demerits are revealed by comparing their performances characteristics, including winding harmonic index, total axial length, average torque, torque ripple, power losses, efficiency, and FW capability. It is revealed that due to the very high Magnetomotive force (MMF) harmonics induced in the bar current, the bar copper loss of the IM with FSCW is significant. It is also revealed that the parasitic effects of the double-layer winding configurations are lower than those of the single-layer (SL) winding configurations. It is also demonstrated that for the slot/pole/phase combinations lower than two q ≤ 2 , the higher the coil pitch, the lower the parasitic effects and the higher the efficiency. Moreover, it is found that the combinations q ≥ 2 , especially those having longer coil pitch and higher stator slot number, and the SL combinations offer better FW capability. Finally, the Finite-element analysis (FEA) results of IM with long-pitch ISDWs are validated by experimental measurements. |
| Starting Page | 2525 |
| Ending Page | 2536 |
| Page Count | 12 |
| ISSN | 17518660 |
| Volume Number | 14 |
| e-ISSN | 17518679 |
| Issue Number | Issue 12, Dec (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-epa/14/12 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2019.0980 |
| Journal | IET Electric Power Applications |
| Publisher Date | 2020-09-16 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Asynchronous Machine Bar Copper Loss Different Winding Topology Double-layer Winding Configurations Electric Vehicle Electric Vehicle Application Electromagnetic Performance Finite Element Analysis Flux-weakening Capability Fractional-slot FSCW FW Capability Higher Stator Slot Number Induction Machine Integer-slot Long-pitch ISDWs Longer Coil Pitch Machine Windings Magnetic Flux Parasitic Effect Performances Characteristic Permanent Magnet Machine Rotors Single-layer Winding Configurations Squirrel Cage Motors Squirrel-cage Induction Machine Stator Coil Pitch Stators Synchronous Machine Torque Transportation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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