基于弹簧振幅放大的电磁式振动发电设计

doi:10.12096/j.2096-4528.pgt.22051

发电技术 ›› 2023, Vol. 44 ›› Issue (2): 244-252.DOI: 10.12096/j.2096-4528.pgt.22051

基于弹簧振幅放大的电磁式振动发电设计

杨永宝¹, 张博¹, 张立昌², Rätsch Matthias³, 索宇超¹

^1.西安工程大学电子信息学院，陕西省西安市 710699
^2.西安工程大学工程训练中心，陕西省西安市 710699
^3.罗伊特林根应用技术大学工程技术学院，德国罗伊特林根 72760

收稿日期:2022-05-03 出版日期:2023-04-30 发布日期:2023-04-28
作者简介:杨永宝(1996)，男，硕士研究生，研究方向为电力电子及新能源发电，2767736226@qq.com；
张博(1981)，男，博士，讲师，研究方向为电力电子及新能源发电，本文通信作者，paul8899@126.com；
张立昌(1984)，男，硕士，工程师，研究方向为机械工程；
Matthias Rätsch(1966)，男，博士，教授，研究方向为人工智能；
索宇超(1994)，男，硕士，研究方向为电力电子及新能源发电。
基金资助:
国家自然基金项目(11705135);西安市青年人才托举计划项目(095920201324)

Design of Electromagnetic Vibration Power Generation Based on Spring Amplitude Amplification

Yongbao YANG¹, Bo ZHANG¹, Lichang ZHANG², Matthias Rätsch³, Yuchao SUO¹

^1.School of Electronic Information, Xi’an Polytechnic University, Xi’an 710699, Shaanxi Province, China
^2.Engineering Training Center, Xi’an Polytechnic University, Xi’an 710699, Shaanxi Province, China
^3.School of Technik, Reutlingen University, Reutlingen 72760, Germany

Received:2022-05-03 Published:2023-04-30 Online:2023-04-28
Supported by:
National Natural Science Foundation of China(11705135);Xi’an Youth Talent Support Program(095920201324)

摘要/Abstract

摘要：

针对新能源振动发电技术，提出了一种利用弹簧增大振幅的电磁式振动能量收集装置。为提高能量收集效率，利用电机电磁模型和质量-弹簧-阻尼振动模型对能量收集装置的输出电压进行了建模分析。针对振动频率为15 Hz、振幅1 mm的样例工况，对弹簧振幅放大机构进行了最优化设计；根据优化结果利用Solid-Works软件对弹簧振幅放大机构进行建模，并将模型导入ANSYS软件进行有限元分析，对振幅放大机构设计方案的合理性与可行性进行评估；最后，制作样机并搭建了振动发电实验平台，对样机进行实验验证。实验结果表明，所设计方案在样例工况下将动子振幅放大7.98倍，空载电压达22.8 V，最大输出功率为0.44 W。为使本装置能够应用于更为广泛的领域，利用3个不同频率工况进一步验证了所设计装置与所提方法的有效性。

关键词: 振动能量收集, 弹簧, 最优化, 有限元, 振动发电

Abstract:

For new energy vibration power generation, this paper proposed an electromagnetic vibration energy harvesting device that uses a spring to increase the amplitude. In order to improve the energy harvesting efficiency, this paper used the motor electromagnetic model and the mass-spring-damping vibration model to model and analyze the output voltage of energy harvesting device. For the sample working condition of vibration frequency of 15 Hz and amplitude of 1 mm, the optimal design of the spring amplitude amplification mechanism was carried out. According to the optimization results, Solid-Works software was used to model the spring amplitude amplification mechanism. In addition, the model was imported into ANSYS software for finite element analysis to evaluate the rationality and feasibility of the design scheme of the amplitude amplification mechanism. Finally, a prototype was made and a vibration power generation experimental platform was built to verify the prototype. The experimental results show that the design scheme in this paper amplifies the amplitude of the mover by 7.98 times, the no-load voltage reaches 22.8 V, and the maximum output power is 0.44 W, which better realizes the vibration energy collection. In order to make the device can be applied to a wider range of fields, the effectiveness of the designed device and the proposed method was further verified by using three different frequency working pairs.

Key words: vibration energy harvesting, spring, optimization, finite element, vibration power generation

中图分类号:

TK 01

杨永宝, 张博, 张立昌, Rätsch Matthias, 索宇超. 基于弹簧振幅放大的电磁式振动发电设计[J]. 发电技术, 2023, 44(2): 244-252.

Yongbao YANG, Bo ZHANG, Lichang ZHANG, Matthias Rätsch, Yuchao SUO. Design of Electromagnetic Vibration Power Generation Based on Spring Amplitude Amplification[J]. Power Generation Technology, 2023, 44(2): 244-252.

图/表 12

图1 振动能量收集装置结构图

Fig. 1 Structure diagram of vibration energy harvesting device

图2 动力学模型

Fig. 2 Kinetic model

图3 不同阻尼比下Z/X随频率比r的变化情况

Fig. 3 Variation of Z/X with frequency ratio r under different damping ratios

图4 弹簧结构图

Fig. 4 Spring structure diagram

图5 弹簧设计流程图

Fig. 5 Flow chart of spring design

图6 弹簧一阶模态

Fig. 6 Spring first-order mode

图7 振幅放大机构一阶模态

Fig. 7 The first-order mode of the amplitude amplification mechanism

图8 振幅放大机构的应力图

Fig. 8 Stress diagram of the amplitude amplification mechanism

图9 实验平台

Fig. 9 Experimental platform

图10 电压、振幅随频率变化曲线

Fig. 10 Voltage and amplitude change with frequency

图11 15 Hz电压波形

Fig. 11 15 Hz voltage waveform

图12 不同频率下最大电压波形

Fig. 12 Maximum voltage waveform at different frequencies

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基于弹簧振幅放大的电磁式振动发电设计

Design of Electromagnetic Vibration Power Generation Based on Spring Amplitude Amplification

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