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Theoretical modeling and experimental verification of rotational variable reluctance energy harvesters

机译：旋转可变磁阻能量收割机的理论建模与实验验证

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摘要

Energy harvesting has great potential for powering low-power wireless sensor nodes by converting environmental energies into the electricity. It can be widely used for real-time online industrial monitoring. Among different transducers, the variable reluctance energy harvester (VREH) has attracted much attention due to the great performance for the low-speed rotations. However, there is a lack of precise models for performance prediction. In this paper, a new modeling method for VREH is proposed to predict the output voltage. A combined Substituting Angle Magnetic Field Division modeling method is presented to accurately model the magnetic permeance of the air?gap for the VREH. Then, the magnetic flux change in the magnetic circuit is derived to calculate the voltage response of the coil. The numerical and experimental results of voltage responses verify the effectiveness of proposed model with the maximum error of 4%. The influence of some key factors on voltage response is investigated, including the thickness of air?gap and tooth height. Moreover, power analysis demonstrates that the output power increases from 5.06 mW to 46.7 mW with the rotational speed from 100 rpm to 300 rpm.
机译：通过将环境能量转换为电力，能量收集具有电源的电源很大。它可以广泛用于实时在线工业监测。在不同的换能器中，由于低速旋转的性能很大，可变磁阻能量收割机（VREH）引起了很多关注。然而，缺乏用于性能预测的精确模型。本文提出了一种新的VREH建模方法来预测输出电压。提出了一种组合的取代角磁场分割建模方法以精确地模拟空气的磁性渗透率？VREH的间隙。然后，导出磁路中的磁通量变化以计算线圈的电压响应。电压响应的数值和实验结果验证了所提出的模型的有效性，最大误差为4％。研究了一些关键因素对电压响应的影响，包括空气的厚度和牙齿高度。此外，功率分析表明，输出功率从5.06 mW增加到46.7兆瓦，从100 rpm到300rpm的转速增加。

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  • 来源
    《Energy Conversion & Management》 |2021年第4期|113906.1-113906.13|共13页
  • 作者

    Zhang Ying; Zhu Hongyu; Xu Ye; Cao Junyi; Bader Sebastian; Oelmann Bengt;

  • 作者单位

    Xi An Jiao Tong Univ Educ Minist Modern Design & Rotor Bearing Syst Key Lab Sch Mech Engn Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Educ Minist Modern Design & Rotor Bearing Syst Key Lab Sch Mech Engn Xian 710049 Peoples R China;

    Mid Sweden Univ Dept Elect Design S-85170 Sundsvall Sweden;

    Xi An Jiao Tong Univ Educ Minist Modern Design & Rotor Bearing Syst Key Lab Sch Mech Engn Xian 710049 Peoples R China;

    Mid Sweden Univ Dept Elect Design S-85170 Sundsvall Sweden;

    Mid Sweden Univ Dept Elect Design S-85170 Sundsvall Sweden;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Energy harvesting; Variable reluctance; Rotational motion; Theoretical modeling; Air-gap magnetic permeance;

    机译：能量收集;可变磁阻;旋转运动;理论建模;气隙磁渗透;

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