Superconducting Linear Machines for Electrical Power Generation from the Oceanic Wave

Kiran, Mahbubur Rahman; Farrok, Omar; Guo, Youguang

doi:10.1007/978-981-13-9616-8_8

Cited by 2 publications

(3 citation statements)

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“…Iron cored LGs are smaller in size than that of the air-cored LGs for the same rating [17]. Most of the electrical machines are designed with conventional iron core [13,25], which has a low magnetic saturation point. M235-35A iron core [8] and ferrite [11] are special magnetic cores.…”

Section: Introductionmentioning

confidence: 99%

“…Conventional PMs are used in the existing LGs, which are discussed in [9,10]. Among these, neodymium iron boron (NdFeB) PMs [6,11,12,14] and some high graded NdFeB such as VACODYM 655HR [8], N50M [13] are mostly used in various types of LGs.…”

Section: Introductionmentioning

confidence: 99%

“…A methodology including analysis, design, and optimisation are presented in [12] for brushless and ironless machines. Superconducting PM linear generators are described in [13] that explain various advantages of using superconducting winding for high output power. An LG is validated both in experimentally and numerically in [14], where detent force is minimised.…”

Section: Introductionmentioning

confidence: 99%

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Application of iron nitride compound as alternative permanent magnet for designing linear generators to harvest oceanic wave energy

Molla

Farrok

Islam

et al. 2020

IET Electric Power Applications

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Most of the conventional linear generator is constructed with either Alnico (specially AlNiCo-9) or Neodymium iron boron (NdFeB) permanent magnets (PMs) for harvesting oceanic wave energy. Alnico is a composition of aluminium (Al), nickel (Ni), and cobalt (Co) added to iron, which is its major volumetric component. Alnico has a poor magnetic energy product, and NdFeB contains a rare earth element. To overcome this issue, a recently developed rare-earth free iron nitride (Fe 16 N 2) compound-based PM linear generator (PMLG) is proposed in this study as an alternative solution for avoiding rare earth material while obtaining high output power. To the best of authors' knowledge, newly invented Fe 16 N 2 is not proposed, analysed, and investigated in any electrical generator. In this context, Fe 16 N 2 is proposed in a linear generator as PM for producing adequate magnetic flux. For analysis and testing the performance of the proposed material, a PMLG is designed. The performances are compared for using Fe 16 N 2 and AlNiCo PMs in the same PMLG design for a fair comparison. It is considered that the proposed PMLG is connected to a direct drive power takeoff system. Simulation results show that the proposed PMLG having Fe 16 N 2 generates 55% more electrical power than that of using AlNiCo. The voltage, current, magnetic flux linkage, power, and magnetic flux density of the proposed PMLG are investigated extensively and compared with those of AlNiCo. The finite element method is applied in the ANSYS/Maxwell software environment for testing the PMLG with the conventional and the proposed PMs as well as results are presented. The proposed design is also validated with a small laboratory prototype.

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