针对多浮体波浪能发电装置,提出一种将Halbach永磁阵列与无铁芯结构相结合的电磁换能器结构,使波浪能可直接转换为电能。随后提出一种针对该电磁换能器的改进等效磁路模型,根据电磁换能器的最大阻尼系数对电磁换能器进行结构优化。将改进等效磁路模型的计算结果与通过仿真软件得到的结果进行对比,验证等效磁路模型的有效性。对处于实验室条件下的电磁换能器进行结构优化后,制作电磁换能器的样机,并搭建试验测试平台,对样机进行性能测试。试验结果表明：样机的绕组电压能达到理论值的为75%,Halbach永磁结构换能器样机在振幅20 mm、频率6 Hz的条件下,不同位置的两个绕组的电压峰值分别为32.33和27.98 V,电压有效值分别为15.00和16.50 V,其能量采集功率为49.72 W。
Abstract
An magnetoelectric generator combining Halbach permanent magnet array with a coreless structure is proposed for the multi-buoy Wave Energy Convertor （WEC）, enabling direct conversion of wave energy into electrical energy. An improved equivalent magnetic circuit model is proposed for this magnetoelectric generator, and the structure of the magnetoelectric generator is optimized according to the maximum damping factor. The calculation results of the improved equivalent magnetic circuit model are compared with the results obtained through simulation software to verify the validity of the improved equivalent magnetic circuit model. After optimizing the structure of the electromagnetic transducer under laboratory conditions, a prototype of the magnetoelectric transducer was built and an experimental test rig was set up to test the performance of the prototype. The test results show that the voltage of the prototype is approximately 75% of the theoretical value. The peak voltages of the two windings at different positions of the prototype are 32.33 V and 27.98 V respectively at an amplitude of 20 mm and a frequency of 6 Hz, and an RMS value of 15.00 V and 16.50 V respectively. Its energy harvesting power is 49.72 W.
关键词
波浪能 /
直接能量转换 /
电磁换能器 /
Halbach阵列 /
无铁芯
Key words
wave power /
direct energy conversion /
magnetoelectric generators /
Halbach array /
coreless
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基金
国家自然科学基金（51675265）; 淮安市自然科学研究计划（HAB202226）
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