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External rotor SRM with high torque per volume: design, analysis, and experiments

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Abstract

The purpose of this paper is to propose a new external rotor switched reluctance motor as a suitable prototype to produce high torque per volume with minimum leakage flux in small size applications. To evaluate the proposed configuration, its structure is introduced firstly, and the main characteristics such as flux density, flux linkage, self-inductance, mutual inductance, and output torque are analyzed numerically via three-dimensional finite element method. Subsequently, the obtained results are compared with those of a conventional motor; furthermore, the obtained results are validated in a laboratory set-up. The experimental and numerical analysis shows that this motor structure can help users to produce higher output torque per volume, with minimum leakage flux.

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Acknowledgments

This work was supported by vice-presidency of research and technology of Shahid Beheshti University.

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Authors and Affiliations

  1. Faculty of Electrical and Computer Engineering, Power and Water University of Technology, Tehran, Iran

    H. Torkaman

  2. Department of Electrical and Computer Engineering, Shahid Beheshti University, G.C. Tehran, Iran

    H. Torkaman, E. Afjei, A. Gorgani, N. Faraji & H. Karim

  3. Department of Electrical and Computer Engineering, University of Texas at Dallas, Dallas, TX, USA

    N. Arbab

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  1. H. Torkaman
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  2. E. Afjei
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  3. A. Gorgani
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  4. N. Faraji
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  5. H. Karim
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  6. N. Arbab
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Correspondence to H. Torkaman.

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Torkaman, H., Afjei, E., Gorgani, A. et al. External rotor SRM with high torque per volume: design, analysis, and experiments. Electr Eng 95, 393–401 (2013). https://doi.org/10.1007/s00202-012-0265-3

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  • DOI: https://doi.org/10.1007/s00202-012-0265-3

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