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A New Structure of a Gap-Reactor to Reduce Electromagnetic Vibrations

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Abstract

Magnetostriction is an inherent property of an electrical steel sheet (ESS). Experimental measurements have revealed that the magnetostrictions of Grain-oriented and Non-oriented ESSs are mostly opposite in their directions. Based on this, a novel structure of gap reactor is suggested to reduce the mechanical vibration of the reactor. The new structure follows the conventional manufacturing process, and is built by stacking Grain-oriented and Non-oriented cores alternately while a conventional one is by only Grain-oriented or Non-oriented core. In order to verify the effectiveness of the proposed structure, the electromagnetic vibration, stress and displacement of the reactor are analyzed based on the magneto-elastic coupled analysis. The measured magnetization and magnetostriction data of the ESSs are adopted during the numerical calculation. Prototypes of new and traditional structures with the same design parameters were also built and electromagnetic-induced vibration were measured and analyzed. Both the computational and experimental results showed that the proposed structure made much less electromagnetic vibration than the conventional one. Moreover, the noise level around the reactors were measured and the average noise level around the improved prototype was reduced by 16.7%.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China under Grant 51690181 and 51577131. This research was also supported in part by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant number 2020R1I1A3A04037180)”

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Authors and Affiliations

  1. School of Electrical Engineering and Automation, Tianjin Polytechnic University, Tianjin, China

    Lihua Zhu, Qianchao Wang & Rui Sha

  2. Department of Electrical Engineering, Chungbuk National University, Cheongju, Korea

    Chang-seop Koh

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  1. Lihua Zhu
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  2. Qianchao Wang
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  3. Rui Sha
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  4. Chang-seop Koh
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Correspondence to Chang-seop Koh.

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Zhu, L., Wang, Q., Sha, R. et al. A New Structure of a Gap-Reactor to Reduce Electromagnetic Vibrations. J. Electr. Eng. Technol. 16, 1437–1443 (2021). https://doi.org/10.1007/s42835-020-00640-1

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  • DOI: https://doi.org/10.1007/s42835-020-00640-1

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