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Design and Simulation of the Channel Model of a LMMHD Generator Based on Halbach

Journal of Magnetics, Volume 23, Number 2, 30 Jun 2018, Pages 171-178
Xinyue Feng * (Faculty of Information Technology, Beijing University of Technology), Yiming Zhang (Faculty of Information Technology, Beijing University of Technology), Jiashen Tian (Faculty of Information Technology, Beijing University of Technology), Junxia Gao (Faculty of Information Technology, Beijing University of Technology)
Abstract
To improve the efficiency of the liquid metal magnetohydrodynamic (LMMHD) generator, a new type of magnet structure of LMMHD system is designed in paper. The internal magnetic gathering capability is enhanced
by imitating the arrangement of the Halbach array magnet. The magnetic induction intensity of conventional magnetic channel, Halbach magnet channel, and the new type of magnet channel, which is derived from basic
Halbach are compared via ANSYS Maxwell 2D model. Simulation results show that Halbach magnets have better capacity of magnetism gathering and are more efficient at gathering electricity than conventional methods.
The new type of magnetic has advantages of small size, low cost, high induction intensity, high output voltage and high power.
 
Keywords: liquid metal magnetohydrodynamic (LMMHD); magnetoelectric channel; Halbach; ocean power generation; power generation efficiency
DOI: https://doi.org/10.4283/JMAG.2018.23.2.171
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