Cogging Force Reduction of Permanent Magnet Single-Phase Linear Generator Applied in Wave Energy Conversion System

Abstract:

This paper proposes a permanent magnet single-phase linear generator (PMSPLG) with Halbach PM Array applied in wave energy conversion system and illustrates how the parameter changes in the geometry of permanent magnet and slot affect the cogging force of the generator. Moreover, the cogging force analysis method in PMSPLG is improved based on the cogging torque analysis method of permanent magnet synchronous rotation machine. Due to experiment results of prototype concordant with the analysis results of the analytical method and the finite-element method, the proposed model and analytical method are correct and effective.

• Periodical: Applied Mechanics and Materials (Volumes 416-417)
• Pages: 328-332
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.416-417.328
• Online since: September 2013
• Authors: Jing Zhang, Hai Tao Yu, Min Qiang Hu, Qi Chen, Lei Huang
• Keywords: Cogging Force, Linear Generator, Permanent Magnet, Wave Energy Conversion

References

[1] Nikolaos M. Kimoulakis, Antonios G. Kladas, IEEE Transactions on Magnetic., vol. 45, no. 3, pp.1246-1249, (2009).

[2] J.K.H. Shek, D.E. Macpherson, M.A. Mueller and J. Xiang, Reduction force control of a linear eletrical generator for direct drive wave energy conversion, IET Renew. Power Gener, 2007, 1, (1), p.17–24.

DOI: 10.1049/iet-rpg:20060028

[3] T.W. Thorpe, M.J. Picken, Wave energy devices and the marine enviroment, IEE PROCEEDINGS-A, vol. 140, NO. 1, JANUARY (1993).

[4] J. Falnes, Ocean Waves and Oscillating Systems. Cambridge, U.K. Cambridge Univ. Press, 2002, p.196–260.

[5] M.A. Mueller, Electrical generators for direct drive wave energy converters, IEE Generation, Transmission and Distribution, vol. 149, pp.446-456, (2002).

DOI: 10.1049/ip-gtd:20020394

[6] N. Bianchi, S. Bolognani, D. D. Corte, and F. Tonel, Tubular linear permanent magnet motors: An overall comparison, IEEE Trans. Ind. Appl., vol. 39, no. 2, p.466–475, Mar. (2003).

DOI: 10.1109/tia.2003.809444

[7] R. D. Thornton, Linear synchronous motor design, in Int. Electr. Machines Drives Conf., San Antonio, TX, May 2005, p.1555–1560.

[8] J. F. Eastham, Novel synchronous machine: linear and disc, Proc. Ints. Elec. Eng., Vol. B-137, pp.49-58, (1990).

[9] Irina A. Ivanova, Olov Ågren, Hans Bernhoff, and Mats Leijon, Simulation of Wave-Energy Converter WithOctagonal Linear Generator, IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 30, NO. 3, JULY (2005).

DOI: 10.1109/joe.2005.858373

[10] Irina A. Ivanova, Olov Ågren, Hans Bernhoff, and Mats Leijon, Simulation of Wave-Energy Converter with Octagonal Linear Generator, IEEE JOURNAL OF OCEANIC ENGINEERING, VOL. 30, NO. 3, JULY (2005).

DOI: 10.1109/joe.2005.858373

[11] Michael E. McCormick, ocean wave energy conversion, John Wiley&Sons, Inc. (1981).

[12] J.K.H. Shek, D.E. Macpherson, M.A. Mueller and J. Xiang, Reduction force control of a linear eletrical generator for direct drive wave energy conversion, IET Renew. Power Gener, 2007, 1, (1), p.17–24.

DOI: 10.1049/iet-rpg:20060028

[13] Sung Whan Youn, Jong Jin Lee, Hee Sung Yoon, and Chang Seop Koh, A New Cogging-Free Permanent-Magnet Linear Motor, IEEE TRANSACTIONS ON MAGNETICS, Vol. 44, NO. 7, JULY (2008).

DOI: 10.1109/tmag.2008.918921