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工程设计学报
Chinese Journal of Engineering Design  2024, Vol. 31 Issue (2): 201-209    DOI: 10.3785/j.issn.1006-754X.2024.03.139
Mechanical Optimization Design     
Research on power generation performance of vibration energy collecting magnetorheological damper
Xingsheng XI(),Guoliang HU(),Wencai ZHU,Lifan YU,Gang LI
Key Laboratory of Conveyance and Equipment, Ministry of Education, East China Jiaotong University, Nanchang 330013, China
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Abstract  

A magnetorheological damper (MRD) with simple structure and capable of collecting vibration energy was designed to address the over-dependence of MR damper on external power sources and avoid the power failure risk. The damper consisted of a vibration reduction device based on magnetorheological effect and a power generation device based on electromagnetic induction principle. Firstly, the mathematical model of vibration energy harvesting of the power generation device was established based on the Ohm theorem of magnetic circuit. Secondly, MATLAB software was used to analyze the power generation performance. The relationship between the power generation performance and the structural design variables was studied. Then, electromagnetic simulation analysis and comparison were conducted on two power generation devices with different permanent magnet group structures using COMSOL software, with a focus on the impact of permanent magnet group height on power generation performance. Finally, the impact of different vibration frequencies and amplitudes on the power generation performance of the device was simulated and analyzed. The results showed that within a certain range, the height of winding slot of induction coil was basically linear with the power generation performance index, and there were optimal values for the height of permanent magnet group, the height of magnetic gasket and radial thickness of winding cylinder. Regardless of the frequency or amplitude of vibration excitation. The peak induced voltage of a single coil of generation device with a permanent magnet group height of 30 mm was about 42.5% larger than that with a permanent magnet group height of 20 mm, and the peak output power was about 22.3% higher. The research results can provide reference for improving the power generation performance of vibration energy harvesting MRD.

Key words： magnetorheological damper      energy harvesting      electromagnetic induction      power generation performance     
Received: 27 March 2023      Published: 26 April 2024
CLC:  TH 703.62  
Corresponding Authors: Guoliang HU     E-mail: xingsheng_xi@163.com;glhu@ecjtu.edu.cn
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Xingsheng XI
Guoliang HU
Wencai ZHU
Lifan YU
Gang LI
Cite this article:

Xingsheng XI,Guoliang HU,Wencai ZHU,Lifan YU,Gang LI. Research on power generation performance of vibration energy collecting magnetorheological damper. Chinese Journal of Engineering Design, 2024, 31(2): 201-209.

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https://www.zjujournals.com/gcsjxb/10.3785/j.issn.1006-754X.2024.03.139     OR     https://www.zjujournals.com/gcsjxb/Y2024/V31/I2/201


振动能量采集型磁流变阻尼器发电性能研究

为了解决磁流变阻尼器对外部电源的过度依赖以及避免其断电失效的风险，设计了一种结构简单、可实现振动能量采集的磁流变阻尼器。该阻尼器由基于磁流变效应的减振装置和基于电磁感应原理的发电装置组成。首先，基于磁路欧姆定理建立了电磁感应发电装置的振动能量采集数学模型；其次，应用MATLAB软件进行发电装置发电性能分析，研究了装置发电性能与结构设计变量之间的关系；接着，采用COMSOl软件对2种不同永磁体组结构的发电装置进行了电磁仿真分析与对比，重点分析了发电装置永磁体组高度对发电性能的影响；最后，仿真分析了不同振动频率和幅值对装置发电性能的影响。结果表明：在一定范围内，感应线圈绕线槽高度值与发电性能指标值基本呈线性关系，永磁体组高度、导磁垫片高度与绕线筒径向厚度均存在最优值。无论在何种频率或幅值振动激励下，永磁体组高度为30 mm的发电装置单线圈感应电压的峰值比永磁体组高度为20 mm的大42.5%左右，输出功率峰值大22.3%左右。研究结果可为提高振动能量采集型磁流变阻尼器发电性能提供参考。


关键词： 磁流变阻尼器,  能量采集,  电磁感应,  发电性能 
Fig.1 Schematic diagram of vibration energy harvesting type MRD structure
Fig.2 Schematic diagram of magnetic circuit of MRD electromagnetic induction power generation device
Fig.3 Relationship between comparison factor Q and height of winding groove wc
Fig.4 Relationship between comparison factor Q and radial thickness lt of winding drum
Fig.5 Relationship between comparison factor Q and height of permanent magnet group τm and height of magnetic gasket τc
Fig.6 Relationship between comparison factor Q and radial thickness of winding cylinder lt, height of magnetic gasket τc
Fig.7 Schematic diagram of two different structures of magnetorheological dampers for power generation devices
Fig.8 Grid division diagram of single coil structure in power generation device
Fig.9 Cloud map of magnetic induction intensity distribution of power generation device at initial position
Fig.10 Variation curve of induced voltage of single coil in power generation device over time
Fig.11 Magnetic induction intensity of induction coil in power generation device
Fig.12 Variation curve of output power of single coil in power generation device over time
Fig.13 Variation curve of induced voltage of single coil in power generation device over time at different frequencies with amplitude of 5 mm
Fig.14 Variation curve of induced voltage of single coil in device over time at different frequencies with amplitude of 10 mm
Fig.15 Variation curve of induced voltage of single coil in device over time at different frequencies with amplitude of 15 mm
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