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Abstract

In order to improve the suspension characteristics of passive magnetic bearings in vertical axis wind power generation system, T-shaped group of passive magnetic bearing with three rings which owns high suspension characteristics are proposed. The working principle of the structure is described briefly. The multi-objective optimization is achieved with high bearing capacity and high magnetic stiffness by studying its impacts on the magnetic ring with variable geometric parameters: the height of the magnetic ring, the thickness of the magnetic ring and the air gaps between the magnetic rings. The research shows that suspension characteristics of the novel structure are 2 times of the traditional radial magnetic bearings. Its the bearing capacity is at least 1.75 times before optimization and the magnetic stiffness is at least twice as high as before optimization which provides a reference for the suspension characteristics of the vertical axis wind turbine suspension system.

Keywords

Vertical axis high magnetic stiffness high bearing capacity suspension characteristics

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References

TIAN

Hai jiao

, Summarize of the development of the vertical axis wind turbine, J. Application of Energy Technology 11 (2006), 22–27.

YUN

Jia liu

, The world’s first all-permanent magnetic suspension wind turbine debut in China, J. Construction Technology (2006), 70–70.

Sotelo

G.G.

, Magnetic bearing sets for a flywheel system, J. IEEE Transactions on Applied Super Conductivity 17 (2017), 2150–2153. doi:10.1109/TASC.2007.899268.

Moser

, Optimization of repulsive passive magnetic bearings, J. IEEE Transactions on Magnetics 42 (2006), 2038–2042. doi:10.1109/TMAG.2005.861160.

Liu

Z.Y.

, A switched reluctance motor with conical magnetic bearings, J. International Journal of Applied Electromagnetics and Mechanics 54 (2017), 141–164.

Jacobina

C.B.

, Estimating the parameters of induction machines at standstill, J. IEEE Transaction on Energy Conversion 17 (2002), 85–89.

Hamid

, A review of RFO induction motor paramemter estimation techniques, J. IEEE Transactionson Energy Conversion 18 (2003), 271–283. doi:10.1109/TEC.2003.811719.

X.Z.

, Characteristics analysis of a novel detent force based magnetic suspension system, J. Micromotors 44 (2011), 59–60. doi:10.15934/j.

Matthias , Design of permanent magnet with high stiffness, in: J. The Tenth International Symposium on Magnetic Bearing, 2006.

10.

Marth

Edmund

, A 2-D-based analytical method for calculating permanent magnetic ring bearings with arbitrary magnetization and its application to optimal bearing design, J. IEEE Transactions on Magnetics 50 (2014) doi:10.1109/TMAG.2013.2295550.

11.

Alizadeh Tir

, Design of a new structure passive magnetic bearing with radial magnetization using FEM, C, in: The 22nd Iranian Conferenceon Electrical Engineering, 2014, pp. 798–802. doi:10.1109/IranianCEE.2014.6999645.

12.

Alizadeh Tir

, A novel structure of passive magnetic bearing with axial magnetization, C, in: The 5th Power Electronics, Drive Systems and Technologies Conference, 2014, pp. 311–316. doi:10.1109/TMAG.2016.2625275, doi:10.1109/PEDSTC.2014.6799392.

13.

Ravaud

, Force and stiffness of passive magnetic bearings using permanent magnets. Part 1: Axial magnetization, J. IEEE Transactions on Magnetics 45 (2009), 2996–3002. doi:10.1109/TMAG.2009.2016088.

14.

Wang

Y.M.

, Computation of unloading force of a pm unloading system for vertical shaft, J. New Electrician Technology (1999), 59–62.

15.

Tian

L.L.

, Research on the radial magnetic force of axial placement and axial magnetization Bi-annular-shaped PMB, J. China Mechanical Engineering 24 (2007), 2926–2929.

16.

Van Beneden

, Optimal sizing and comparison of permanent magnet thrust bearings, J. IEEE Transactions on Magnetics 53 (2017) doi:10.1109/TMAG.2016.2625275.

17.

KIM

Ki Chan

LEE

HEE

Jun Kim

, Multi objective optimal design for interior permanent magnet synchronous motor, J. IEEE Transactions on Magnetics 45 (2009), 1780–1783.

18.

Chen

, Design and finite element analysis of an outer rotor permanent magnet generator for directly coupled wind turbines, J. IEEE Transactions on Magnetics 36 (2000), 3802–3808. doi:10.1109/20.908378.

19.

Lin

Zhou

and Xiao

, Multi-objective optimization of closed extrusion new technology for agricultural vehicles steering knuckle, J. Hot Working’fechnology 43 (2014), 133–135.

Multi objective optimization on suspension characteristics of vertical axis wind turbine

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