N28EH Permanent Magnet Based Linear Generator to Prevent Demagnetization during Oceanic Wave Energy Conversion

Authors

Md Bashir, Ahsanullah University of Science And Technology
Omar Farrok, Ahsanullah University of Science And Technology
Md Rabiul Islam, University of WollongongFollow
Jianguo Zhu, University of Sydney, University of Technology Sydney

RIS ID

132918

Publication Details

M. Bashir, O. Farrok, M. Islam & J. Zhu, "N28EH Permanent Magnet Based Linear Generator to Prevent Demagnetization during Oceanic Wave Energy Conversion," in ICEMS 2018 - 2018 21st International Conference on Electrical Machines and Systems, 2018, pp. 1836-1841.

Abstract

During electrical power generation by permanent magnet linear generators (PMLGs) from the oceanic wave, there is a temperature rise in the translator and stator core. This phenomenon badly affects the performance of permanent magnets (PMs) causing demagnetization which further degrades the generation of electrical power from almost all the PMLGs. This paper investigates the effect of temperature rise on the conventional neodymium iron boron (NdFeB) PMs and proposes a PMLG with recently developed N28EH NdFeB PM. The temperature effect for both the existing and high grade neodymium iron boron (NdFeB) PM are analyzed. The voltage, current, flux linkage, and power curves of the proposed PMLG are shown for comparison. Simulation results show that, for the same operating temperature, the generation of electrical power of the PMLG with N28EH NdFeB PM is more compared than that the existing one because of preventing demagnetization.