Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Eddy Loss Analysis and Parameter Optimization of the WPT System in Seawater

  • Zhang, Ke-Han (School of Marine Science and Technology, Northwestern Polytechnical University) ;
  • Zhu, Zheng-Biao (School of Marine Science and Technology, Northwestern Polytechnical University) ;
  • Du, Luo-Na (School of Marine Science and Technology, Northwestern Polytechnical University) ;
  • Song, Bao-Wei (School of Marine Science and Technology, Northwestern Polytechnical University)
  • Received : 2017.09.21
  • Accepted : 2018.01.30
  • Published : 2018.05.20
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Abstract

Magnetic resonance wireless power transfer (WPT) in the marine environment can be utilized in many applications. However, energy loss in seawater through eddy loss (EL) is another consideration other than WPT in air. Therefore, the effect of system parameters on electric field intensity (EFI) needs to be measured and ELs calculated to optimize such a system. In this paper, the usually complicated analytical expression of EFI is simplified to the product of frequency, current, coil turns, and a coefficient to analyze the eddy current loss (ECL). Moreover, as the calculation of ECL through volume integral is time-consuming, the equivalent eddy loss impedance (EELI) is proposed to help designers determine the optimum parameters quickly. Then, a power distribution model in seawater is conceived based on the introduction of EELI. An optimization flow chart is also proposed according to this power distribution model, from which a prototype system is developed which can deliver 100 W at 90% efficiency with a gap of 30 mm and a frequency of 107.1 kHz.

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References

  1. T. Mcginnis, C. P. Henze, and K. Conroy, "Inductive power system for autonomous underwater vehicles," in Proc. IEEE Oceans Conf., pp. 1-5, 2007.
  2. R. Itoh, Y. Sawahara, T. Ishizaki, and I. Awai, "Wireless power transfer to moving ornamental robot fish in aquarium," in Proc. IEEE 3rd Global Conference on Consumer Electrics (GCCE), pp. 459-460, 2014.
  3. T. Assaf, C. Stefanini, and P. Dario, “Autonomous underwater biorobots: A Wireless system for power transfer,” IEEE Robot. Autom. Mag., Vol. 20, No. 3, pp. 26-32, Sep. 2013. https://doi.org/10.1109/MRA.2012.2201577
  4. S. Aldhaher, C. K. Luk, K. E. K. Drissi, and J. F. Whidborne, “High-input-voltage high-frequency class E rectifiers for resonant inductive links,” IEEE Trans. Power Electron., Vol. 30, No. 3, pp. 1328-1335, Mar. 2015. https://doi.org/10.1109/TPEL.2014.2316170
  5. Y. J. Kim, D. Ha, W. J. Chappell, and P. P. Irazoqui, “Selective wireless power transfer for smart power distribution in a miniature-sized multiple-receiver system,” IEEE Trans. Ind. Electron., Vol. 63, No. 3, pp. 1853-1862, Mar 2016. https://doi.org/10.1109/TIE.2015.2493142
  6. T. Kojiya, F. Sato, H. Matsuki, and T. Sato, "Construction of non-contacting power feeding system to underwater vehicle utilizing electromagnetic induction," in Proc. IEEE Europe Oceans Conf., pp. 709-712, 2005.
  7. C. M. Baer, M. Alten, G. Bixler, L. Fredette, J. Owens, G. Purvinis, J. Schaefer, and G. Stou, "Non-contact wet mateable connector," in Proc. IEEE Oceans Conf., pp. 1-6, 2009.
  8. H. Fukuda, N. Kobayashi, K. Shizuno, S. Yoshida, M. Tanomura, and Y. Hama, "New concept of an electromagnetic usage for contactless communication and power transmission in the ocean," in Proc. IEEE Underwater Technology Symposium Conf., pp. 1-4, 2013.
  9. G. V. Tibajia and M. C. R. Talampas, "Development and evaluation of simultaneous wireless transmission of power and data for oceanographic devices," in Proc. IEEE Sensors Conf., pp. 254-257, 2011.
  10. M. Ogihara, T. Ebihara, K. Mizutani, and N. Wakatsuki, "Wireless power and data transfer system for station-based autonomous underwater vehicles," in Proc. IEEE Oceans, pp. 1-5, 2015.
  11. V. Bana, M. Kerber, G. Anderson, and J. D. Rockway, "Underwater wireless power transfer for maritime applications," in Proc. IEEE Wireless Power Transfer Conference, pp. 1-4, 2015.
  12. Z. Cheng, Y. Lei, K. Song, and C. Zhu, "Design and loss analysis of loosely coupled transformer for an underwater high-power inductive power transfer system," IEEE Trans. Magn., Vol. 51, No. 7, Jul. 2015.
  13. J. Zhou, D. J. Li, and Y. Chen, “Frequency selection of an inductive contactless power transmission system for ocean observing,” Ocean Engineering, Vol. 60, No. 3, pp. 175-185, Mar. 2013. https://doi.org/10.1016/j.oceaneng.2012.12.047
  14. S. Raju, R. Wu, M. Chan, and C. P. Yue, “Modeling of mutual coupling between planar inductors in wireless power applications,” IEEE Trans. Power Electron., Vol. 29, No. 1, pp. 481-490, Jan. 2014. https://doi.org/10.1109/TPEL.2013.2253334
  15. H. J. Choi, S. Lee, and C. Cha, "Optimization of geometric parameters for circular loop antenna in magnetic coupled wireless power transfer," in Wireless Power Transfer Conference, pp. 280-283, 2014.
  16. S. Raju, C. C. Prawoto, M. Chan, and C. P. Yue, "Modeling of on-chip wireless power transmission system," in Proc. IEEE Wireless Symposium, pp. 1-4, 2015.
  17. W. X. Zhong, C. Zhang, X. Liu, and S. Y. R. Hui, “A methodology for making a three-coil wireless power transfer system more energy efficient than a two-coil counterpart for extended transfer distance,” IEEE Trans. Power Electron., Vol. 30, No. 2, pp. 933-942, Feb. 2015. https://doi.org/10.1109/TPEL.2014.2312020
  18. K. Zhang, L. Du, Z. Zhu, B. Song, and D. Xu, "A normalization method of delimiting the electromagnetic hazard region of a wireless power transfer system," IEEE Trans. Electromagn. Compat., to be published.
  19. M. A. K. Hamid, W. M. Boerner, L. Shafai, S. J. Towaij, W. P. Alsip, and G. J. Wilson, "Radiation characteristics of bent-wire antennas," IEEE Trans. Electromagn. Compat., Vol. EMC-12, pp. 106-111, Aug. 2007.
  20. K. H. Zhang, L. B. Yan, Z. C. Yan, H. B. Wen, and B. W. Song, “Modeling and analysis of eddy-current loss of underwater contact-less power transmission system based on magnetic coupled resonance,” Acta Physica Sinica, Vol. 65, No. 4, pp. 1-7, Feb. 2016.
  21. J. A. Ferreira, "AAnalytical computation of AC resistance of round and rectangular litz wire windings," IEE Proceedings B - Electric Power Applications, Vol. 139, pp. 21-25, 1992. https://doi.org/10.1049/ip-b.1992.0003
  22. Z. Yang, W. Liu, and E. Basham, “Inductor modeling in wireless links for implantable electronics,” IEEE Trans. Magn., Vol. 43, No. 10, pp. 3851-3860, Oct. 2007. https://doi.org/10.1109/TMAG.2007.904189