Abstract
In this paper, a permanent magnet (PM) linear memory machine is proposed for ocean wave power generation. A notable feature of this machine is its online tunable mnemonic flux. This enables it to operate efficiently in a wide speed range and makes it suitable for the variable-speed wave-power generation. Moreover, this machine has both the PMs and the windings arranged in its stator so that it does not need slip rings or brushes. The proposed machine is also robust and cost-effective because it has a simple translator of slotted steel. In this paper, the configuration and working principle of the linear memory machine are firstly introduced. The results of a parametric analysis are presented to investigate the effects of the proposed machine’s geometric parameters. The performance of the proposed machine is then analyzed using time-stepping finite element method (TS-FEM).
Highlights
Among the various energy resources, ocean wave energy is very promising since it is renewable, green, enormous, and widely accessible
A novel linear memory machine is proposed for ocean wave power generation
Where F0 is the average value of F; Fm is the magnitude of the alternating component of F; Npm is the number of the permanent magnet (PM) on the stator; θ is the angular position; φm is the initial phase angle of Fm
Summary
Among the various energy resources, ocean wave energy is very promising since it is renewable, green, enormous, and widely accessible. More and more direct-drive energy converters, which extract power directly from the reciprocating wave motion, have been proposed. In these direct-drive energy converters, the linear-to-rotary conversion process can be eliminated, improving the system performance. The machine can operate effectively wide speed range, making it suitable for wave energy conversion in which the wave. The wave motion varies from time to time,timeand proposed machine well as the flux operation are analyzed and showcased using the application of PM linear machines in wave energy converters is limited. Memory machines have drawing attention because of their impressive flux
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