
科学技术与工程

中国技术经济学会
多三棱柱组合振子变励磁条件下流致振动俘能特性试验研究
练继建 , 王珂 , 邵楠 , 司春燕 , 吴志川 , 黄怀毅
科学技术与工程 ›› 2025, Vol. 25 ›› Issue (32) :13972-13978
多三棱柱组合振子变励磁条件下流致振动俘能特性试验研究
Hydrokinetic Energy Conversion from Flow-induced Motion of Multiple Prisms Combination Oscillator with Variable Excitation Voltage
鉴于多棱柱组合振子在流致振动及俘能方面的优势,针对多三棱柱组合振子进行不同励磁电压条件下的流致振动及俘能特性试验研究。试验中,通过控制变励磁电机的励磁电压实现对流致振动俘能系统阻尼的调控,分析不同流速及不同励磁电压条件下的振幅比和频率比,阐述其发生涡激振动和驰振的振动诱发条件;通过对比发电功率及发电效率的变化情况,解析阻尼对多三棱柱组合振子的流致振动俘能特性的影响,旨在探究更具俘能潜力的振子截面形式。试验结果表明:多三棱柱组合振子在不同阻尼条件下均有良好的振动俘能特性,其最大振幅比为1.72(折合流速为10,励磁电压为20 V),最大发电功率为13.86 W(折合流速为10,砺磁电压为40 V)。
Considering the advantages of flow-induced motion and energy conversion of the multi-prism composite oscillator, experimental tests on the flow-induced motion and energy conversion characteristics of multiple prisms combination oscillator under different excitation voltage conditions were conducted. In the experiment, the damping of the flow-induced motion energy conversion system was controlled by adjusting the excitation voltage of the variable excitation motor, as well as the amplitude ratio and frequency ratio at different flow velocities and excitation voltages were analyzed to reveal the oscillation induction conditions for vortex-induced vibration and galloping. By comparing the variations in active power and efficiency, the influence of damping on the flow-induced motion energy conversion characteristics of multiple prisms combination oscillator was elucidated to explore more potential cross-sectional types for energy conversion. The experimental results show that compared with single triangular prismatic vibrators, multiple prisms combination oscillator have good oscillation and energy conversion performances under different damping conditions, with the maximum amplitude ratio of 1.72(reduced velocity is 10, excitation voltage is 20 V) and the maximum power generation of 13.86 W(reduced velocity is 10, excitation voltage is 40 V).
flow-induced motion / multiple prisms combination oscillator / energy conversion / oscillation response
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