Design and performance evaluation of halbach array linear generator for wave energy converters

Optimized Design of PM Halbach Array Linear Generator for Sea Wave Energy Converters Operate at Maximum Power Transfer

“…It is recommended to integrate a suitable mechanical spring in the WEC to develop reaction force counteracts the force of inertia developed by the movable parts. The maximum power transfer condition in the WEC systems happens when both the inertia and the spring forces are equal in value and opposite in direction [1,2].…”

“…Because of tubular shape of generator, the simulated model in FEMM is presented in axisymmetric dimensions. Several efforts have been achieved in [1], [2] and [5] which present a good guide to determine the probable ranges of design variables appropriate for the predetermined ratings demonstrated in Table.1.…”

“…The optimization problem has some constrains; the first constrain is the filling factor of each coil should be less than 85 %; the second constrain is the losses which shouldn't exceed 50 % of the developed power. The dissipation of generator losses under water governs the description of constrains [2].…”

“…Experts expect that the economical visibility of ocean or sea energies is very effective. It is expected that if wave-capturing technologies become totally developed, the predicted developed wave energy may equal 750 Trillion kWh/year [2].…”

“…The field uniformity leads to extracting of higher power over small time. Therefore, the Halbach arrangement is proposed to be implemented in these generators to gain its performance improvements [1,2,8].…”