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To solve the low power density disadvantage of direct-drive wave energy converter, caused by low direct-drive speed. A novel linear tubular field modulated permanent magnet generator is proposed, which can effectively improve the performance of this kind of generators. The operation of the proposed generator is analyzed. The generator performance is evaluated using finite element method. The results...
Compared with the conventional wave energy conversion, the direct drive wave energy conversion has the advantages of simple structure, high conversion efficiency. In this paper, an energy tracking control strategy is proposed for direct drive wave energy conversion. Firstly, the basic structure of the linear permanent magnet generator (LPMG) is introduced. Secondly, the simulation model of the LPMG...
A double buoy power generation system using the field-modulating tubular linear permanent magnet generator (FMTLPMG) is proposed for wave energy conversion in this paper. Ocean wave theory is adopted to analyze the double buoys hydrodynamic problems and calculate the relative velocity. The traditional linear generator has disadvantages of big weight and low power density caused by the slow ocean wave...
The paper presents a novel linear continuous magnetic gear generator for direct-drive wave energy conversion in which continuous gear ratio is suitable for different sea conditions. In this paper, the operating principle of the proposed machine is introduced, and the no-load and load characteristics are analyzed by finite element method (FEM). The proposed generator with continuous ratios varies operation...
A permanent magnet tubular linear generator (PMTLG) is presented for wave energy conversion due to its direct drive characteristics. Finite Element method is implemented to calculate and optimize the waveform of magnetic field along air-gap of PMTLG with Halbach array. The computational results are validated by experimental ones.
In this paper, a novel flux-switching permanent magnet (FSPM) linear generator is proposed for wave energy extraction. The linear generator is analyzed by using 2D finite element method (FEM) to investigate the electromagnetic characteristics. The result shows that the proposed generator has advantage of the voltage waveform by reducing the cogging effect. The computational results are verified by...
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