Parametric Study of Eddy Current Brakes for Small-Scale Household Wind Turbine Systems

Huiseop Jeong, Hoseong Ji, Sanghyun Choi and Joonho Baek
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Huiseop Jeong: Korea Electric Power Research Institute (KEPRI), Busan 34056, Korea
Hoseong Ji: MEMS Technology Centre, Pusan National University, Busan 46241, Korea
Sanghyun Choi: School of Railroad Engineering, Korean National University of Transportation, Chungju 27469, Korea
Joonho Baek: Department of Engineering Research, ESCO RTS, Seoul 06134, Korea

Energies, 2021, vol. 14, issue 20, 1-9

Abstract: The design and application of eddy current brakes (ECBs) should be simple; further, ECBs should be used semi-permanently. This study aimed to determine major parameters for designing an ECB that can be applied to a small-scale wind turbine generator. To this end, an ECB was developed that could actuate without additional power, thus improving the efficiency of the generator. A series of simulations were conducted for a parametric study to pre-design ECBs suitable for small wind turbines. The six parameters chosen were disk thickness, number of magnets, radial location of magnets from center of disk, magnet pole arrangement, magnetic flux density, and rotational speed. The simulations were conducted on COMSOL Multiphysics. The results indicated that the number of magnets and magnet pole arrangements can significantly affect the performance curve of ECBs. Moreover, the disk thickness and rotational speed are linearly proportional to the braking torque.

Keywords: eddy current brake (ECB); wind turbine generator; magnetic flux; braking torque; pole arrangement (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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