Affiliations: [a] State Key Laboratory of Mechanics and Control of Mechanical Structures, Nanjing University of Aeronautics and Astronautics, Nanjing, China | [b] Guilin University of Aerospace Technology, Guilin, China
Correspondence:
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Corresponding authors: Jinchang Qin, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China. E-mail: [email protected]. Renwen Chen, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China. E-mail: [email protected]
Abstract: In this paper, an improved Halbach array structure of a direct-drive linear motor for wave energy conversion is proposed, and its magnetic circuit structure is modeled and the induced electromotive force (EMF) generated by vertical wave energy conversion is deduced. Then, using the internal and external parameters of the wave energy conversion direct-drive motor, that is, four internal parameters of the magnetic circuit topology and two external parameters of the mover motion, the influence of these parameters on the induced EMF of the direct-drive motor in the wave energy conversion is analyzed. Since the theoretical analysis results of the model are consistent with the results of the two kinds of permanent magnet materials analyzed by the finite element method (FEM), the model and analysis method of the direct drive motor are correct. The investigation show that the modeling method proposed in this paper can be used to optimize the energy conversion of the direct-drive motor from two aspects: the internal parameters of the magnetic circuit topology of the direct-drive motor and the external parameters of the mover motion.
Keywords: Halbach array structure, magnetic circuit, permanent magnets (PM), wave energy, direct-drive linear motor
