Axial flux PM (AFPM) machines are used particularly in applications requiring a compact structure. Their disc shape topology and axial air-gap have lead to a variety of configurations including two popular ones: the yokeless and segmented armature (YASA), and the single-stator single-rotor or single sided machine. In this study, a comprehensive comparative analysis of these configurations is conducted at different magnetic and electric loadings. It is found that at lower loadings, typically employed for air-cooled machines, the torque/ampere characteristics of the YASA machine are almost identical to those of a single sided machine constructed with half the magnet volume. On the other hand, the single sided machine outperforms the YASA machine when the magnet volumes in both machines are maintained equal. However, for higher electric loadings, the torque/ampere characteristics of the YASA machine droop significantly less than those of the single sided machine. The paper includes analytical estimations which are verified with experimentally validated FEA simulations. In addition, the impacts of the armature reaction on saturation and the magnetic flux linkage in both machines is also explored.
|Title of host publication||2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018|
|Number of pages||6|
|State||Published - Dec 3 2018|
|Event||10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States|
Duration: Sep 23 2018 → Sep 27 2018
|Name||2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018|
|Conference||10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018|
|Period||9/23/18 → 9/27/18|
Bibliographical noteFunding Information:
ACKNOWLEDGMENT The support of Regal Beloit Corporation, University of Kentucky, the L. Stanley Pigman endowment and the SPARK program, and ANSYS Inc. is gratefully acknowledged.
© 2018 IEEE.
- Armature reaction
- Axial flux permanent magnet
- Power factor
- Yokeless and segmented armature
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Renewable Energy, Sustainability and the Environment
- Control and Optimization
- Computer Networks and Communications
- Hardware and Architecture
- Information Systems and Management