Publisher : The Korean Institute of Electrical Engineers
DOI : 10.5370/JEET.2015.10.3.1002
Title & Authors
Design and Analysis of Permanent Magnet Synchronous Generator Considering Magnetically Coupled Turbine-Rotor System Kim, Byung-Ok; Choi, Bum-Seog; Kim, Jeong-Man; Cho, Han-Wook;
In this paper, design and analysis of permanent magnet synchronous generator for ocean thermal energy conversion (OTEC) considering magnetically coupled turbine-rotor system is discussed. In particular, the rotor dynamics considering bearing span and journal shaft diameter is highlighted. The two topologies of permanent magnet synchronous generator with magnetic coupling are employed for comparison of computed rotor dynamics and generating characteristics. The analysis results show that the critical speed of the turbine-rotor system is higher when the rotor is coupled by magnetically coupling. Finally, the experimental results confirmed the validity of the proposed design and analysis scheme and successful development.
Gicquel, R., Energy systems : a new approach to engineering thermodynamics, CRC Press, 2012.
W.Wu, H.C. Lovatt, and J. B. Dunlop, “Analysis and design optimisation of magnetic couplings using 3D finite element modeling,” IEEE Trans. Magn., vol. 33, no. 5, pp. 4083-4085, Sept. 1997.
J.D. Ede, Z.Q. Zhu, and D.Howe, “Rotor resonance of high-speed permanent magnet brushless machines,” IEEE Trans. Indust. Appl., vol. 38, no. 6, pp. 1542-1548, June 2002.
T.J. Kim, S.M. Hwang, K.T. Kim. W.B. Jeong, and C.U.Kim, “Comparison of dynamic response for IPM and SPM motors by considering mechanical and magnetic coupling,” IEEE Trans. Magn., vol.37, no.4, pp.2818-2820, July 2001.
K.H. Yim, J.W. Jang, G.H. Jang, M.K. Kim, and K.N. Kim, “Forced vibration analysis of an IPM motor for electrical vehicles due to magnetic force,” IEEE Trans. Magn., vol. 48, no. 11, pp. 2981-2984, Nov. 2012.
K.N. Srinivas and R. Arumugan, “Static and dynamic vibration analyses of switched reluctance motors including bearings, housing, rotor dynamics, and applied loads,” IEEE Trans. Magn., vol. 40, no. 4, pp. 1911-1919, July 2004.
J. Krotsch and B. Piepenbreier, “Radial forces in external rotor permanent magnet synchronous motor with non-overlapping windings,” IEEE Trans. Indust. Electron., vol. 59, no. 5, pp. 2267-2276, May 2012.
T.J. Kim, S.M. Hwang, and N.G. Park, “Analysis of vibration for permanent magnet motor considering mechanical and magnetic coupling effects,” IEEE Trans. Magn., vol. 36, no. 4, pp. 1346-1350, July 2000.
W.H. Kim, “A stress analysis method for the rotor design of an IPMSM considering radial force,” Journal of Electrical Engineering & Technology, vol.9, no.3, pp.888-892, 2014.
T. A. Harris, Rolling bearing analysis,” John Wiley & Sons, 2001.
Mechanical vibration balance quality requirement for rotors in a constant (rigid) state, ISO 1940-1, 2003.
H.K. Yeo, D.K. Woo, J.S. Ro, H.K. Jung, “Analysis of a surface-mounted permanent magnet machine with overhang structure by using a novel equivalent magnetic circuit model,” Journal of Electrical Engineering & Technology, vol. 9, no. 6, pp. 1960-1966, 2014.
G.T. Kim, G.W. Cho, W.S. Jang, K.B. Jang, “The optimal design of fractional-slot SPM to reduce cogging torque and vibration,” Journal of Electrical Engineering & Technology, vol. 7, no. 5, pp. 753-758, 2012.