Research on renewable energy have become a focus in recent years. Ocean wave energy is a kind of renewable energy that exists widely in the world. This paper presents a snake-like ocean Wave Energy Converter (WEC) , which is more adaptive to the wave shape than some other WECs. In order to improveenergy conversion efficiency, we designed and tested three types of magnetoelectric transducers for snake-like WEC, namely, axial magnetization transducer, radial magnetization transducer and Halbach permanent magnet array transducer. In order to enhance the power density of the WECs, a lumped parameter equivalent magnetic circuit model is proposed to optimize its magnetic structural parameter. Then the finite element analysis method is used to analyze models and verify theoretical results. Three 1:5 prototypes of the magnetoelectric transducers are fabricated for experimental verification. The experiments indicate that the prototype with the Halbach permanent magnets array transducer has an output power of 693.80 mW when WEC moves at a relative velocity of 0.1 m/s, the VRMS value of induced voltage is 6.69 V. and this prototype has the highest volumetric Figure of Merit (FoMv) of 1.67%. In conclusion, the Halbach permanent magnet array is more effective in energy conversion than the others, and it can effectively improve the energy harvesting performance for the snake-like WEC.

中文翻译：

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蛇形波能转换器的设计与性能测试

近年来，可再生能源的研究已成为焦点。海浪能是世界上广泛存在的一种可再生能源。本文提出了一种蛇形的海洋波浪能量转换器（WEC），它比其他一些WEC更适应波形。为了提高能量转换效率，我们设计并测试了三种用于蛇形WEC的磁电换能器，即轴向磁化换能器，径向磁化换能器和Halbach永磁阵列换能器。为了提高WEC的功率密度，提出了一种集总参数等效磁路模型，以优化其磁结构参数。然后采用有限元分析方法对模型进行分析并验证理论结果。三个1：制作了5个磁电换能器原型，用于实验验证。实验表明，当WEC以0.1 m / s的相对速度运动时，带有Halbach永磁体阵列换能器的原型的输出功率为693.80 mW，感应电压的VRMS值为6.69V。该原型具有最高的体积功绩值（FoMv）为1.67％。总之，Halbach永磁体阵列在能量转换方面比其他阵列更有效，并且可以有效地改善蛇形WEC的能量收集性能。该原型的最高品质因数（FoMv）为1.67％。总之，Halbach永磁体阵列在能量转换方面比其他阵列更有效，并且可以有效地改善蛇形WEC的能量收集性能。该原型的最高品质因数（FoMv）为1.67％。总之，Halbach永磁体阵列在能量转换方面比其他阵列更有效，并且可以有效地改善蛇形WEC的能量收集性能。