Research Article

Comparison of the inner and outer rotor flux switching permanent magnet machines in contrast to electromagnetic characteristics

April 1, 2020
TR EN

Comparison of the inner and outer rotor flux switching permanent magnet machines in contrast to electromagnetic characteristics

Abstract

Current technology developments also guide the works in the field of electrical machines. That's why researchers are working on new machine types as well as performance improvements of traditional machines. Flux-switching permanent magnet machines are also one of the novel electrical machine types developed in the literature. The working principle and machine design are similar to reluctance machines. The rotor side has the same structure as reluctance machines. However, in flux-switching permanent magnet machines, there are magnets embedded in the windings on the stator side between the two stator slots. Although there are some difficulties in the production process, there are several advantages brought by this design. The permanent magnet poles in the stator are guided to support the path through which the magnetic flux flows through the stator core. In this way, the opposite electromotive force waveform occurs as a sinusoidal. This feature put the flux-switching permanent magnet machines one step forward. Since there is no magnet in the rotor, it is more robust than other (surface) permanent magnet machines. It is convenient for high speed applications. In this article, four flux-switching permanent magnet machine designs are compared in terms of their electromagnetic properties. The magnetic flux density characteristics were evaluated by three-dimensional finite elements method by performing static electromagnetic analysis of four machines with inner rotor and outer rotor with the same number of slots and poles, whose permanent magnet volumes were taken equally. While making comparisons, it was especially paid attention to be equal to the machine dimensions. While two of the four designs designed were realized for comparison purposes, others were developed for investgation. In proposed flux-switching permanent magnet machines, air ducts called flux barriers are opened into the teeth on the rotor side. In this study, the behavior of these air ducts was analyzed using three dimensional finite element analysis data. As a result, the advantages and disadvantages of designs with air ducts were evaluated in terms of machine performance.

Keywords

References

  1. Hao Chen, Ayman M. EL-Refaie, Nabeel A. O. Demerdash and Christopher H. T. Lee (2019). Flux-Switching Permanent Magnet Machines: A Review of Opportunities and Challenges-Part II: Design Aspects, Control, and Emerging Trends, , IEEE Transactions on Energy Conversion, DOI:10.1109/TEC.2019.2956565
  2. Hao Chen, Ayman M. EL-Refaie, Nabeel A. O. Demerdash and Christopher H. T. Lee (2019). “Flux-Switching Permanent Magnet Machines: A Review of Opportunities and Challenges - Part I: Fundamentals and Topologies” , IEEE Transactions on Energy Conversion, DOI: 10.1109/TEC.2019.2956600
  3. Wei Hua, Ming Cheng, Z. Q. Zhu, D. Howe.(2006) Design of Flux-Switching Permanent Magnet Machine Considering the Limitation of Inverter and Flux-Weakening Capability. Conference Record of the 2006 IEEE Industry Applications Conference Forty-First IAS Annual Meeting, Tampa, FL, USA
  4. C. Hwang, C. Chang, S. ShanHung and C. Liu (2014). Design of High Performance Flux Switching PM Machines with Concentrated Windings. IEEE Transactions On Magnetics, 50(1).
  5. P. Su, W. Hua, Z. Wu, Z. Chen, G. Zhang and M. Cheng (2019). Comprehensive Comparison of Rotor Permanent Magnet and Stator Permanent Magnet Flux-Switching Machines. IEEE Transactions On Industrial Electronics, 66(8).
  6. H. Zhang, W. Hua, M. Hu, D. Gerada, and C. Gerada (2019). The Influence of Winding Location in Flux-Switching Permanent-Magnet Machines. IEEE Transactions On Magnetics, 55(7)
  7. H. Chen, X. Liu, A. M. EL-Refaie, J. Zhao, N. A. O. Demerdash, and J. He (2019). Comparative Study of Winding Configurations of a Five-Phase Flux-Switching PM Machine. IEEE Transactions On Energy Conversion, 34(4).
  8. P. Su, W. Hua, M. Hu, Z. Wu, J. Si, Z. Chen and M. Cheng (2020). Analysis of Stator Slots and Rotor Pole Pairs Combinations of Rotor-Permanent Magnet Flux-Switching Machines. IEEE Transactions On Industrial Electronics, 67(2)

Details

Primary Language

English

Subjects

Engineering

Journal Section

Research Article

Publication Date

April 1, 2020

Submission Date

March 15, 2020

Acceptance Date

March 27, 2020

Published in Issue

Year 2020

APA
Çetin, E. (2020). Comparison of the inner and outer rotor flux switching permanent magnet machines in contrast to electromagnetic characteristics. Avrupa Bilim Ve Teknoloji Dergisi, 21-26. https://doi.org/10.31590/ejosat.araconf4