Design of a prototype of PM vernier electrical generator with power electronic unit for a wave energy plant

Kurbatov, Pavel; Molokanov, Oleg; Kryukov, Konstantin

doi:10.1109/epepemc.2014.6980648

Cited by 4 publications

(1 citation statement)

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“…The focus of these publications were generally of the torque-or total harmonic distortion (THD) measurements of the system [36][37][38][39] or its demagnetization behavior [32][33][34][35]. A number of studies have investigated linear machines with magnetization in the direction of motion [40][41][42][43][44]. Furthermore, modified pole shoes for a rotating PM synchronous wind turbine [45] and different salient pole shoe faces for a synchronous machine [46] were previously studied.…”

Section: Introductionmentioning

confidence: 99%

Study of an Altered Magnetic Circuit of a Permanent Magnet Linear Generator for Wave Power

et al. 2017

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The wave energy converter (WEC) studied and developed at Uppsala University in Sweden is a point absorbing buoy connected to a linear generator (LG) on the seabed. Previous studies have improved the sustainability of the generator, changing its magnets from Nd 2 Fe 14 B-magnets to ferrites. In this paper, the magnetic circuit of the linear generator is further studied. Ferrite magnets of two different types (Y30 and Y40) are studied along with different shapes of pole shoes for the system. The finite element method (FEM) simulations in a program called Ace are performed. The results show that a linear generator including both Y30 and Y40 magnets and shortened T-shaped pole shoes can generate a similar magnetic energy in the airgap as a linear generator only containing Y40 magnets and rectangular pole shoes. This shows that the magnetic circuit can be altered, opening up sizes and strengths of magnets for different retailers, and thereby possibly lowering magnet cost and transportation. This work was previously presented as a conference at the European Wave and Tidal Energy Conference (EWTEC) 2017 in Cork, Ireland; this manuscript has been carefully revised and some discussions, on magnet costs for example, have been added to this paper.

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