A Low-Frequency Resonant Electromagnetic Vibration Energy Harvester Employing the Halbach Arrays for Intelligent Wireless Sensor Networks

Qiu, Jing; Liu, Xin; Chen, Hengjia; Xu, Xiaoyu; Wen, Yumei; Li, Ping

doi:10.1109/tmag.2015.2455041

Cited by 19 publications

(12 citation statements)

References 13 publications

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“…VEH based on the piezoelectric effect is widely attractive due to the availability of wellperforming piezoelectric materials and their potential higher power densities. EM VEHs have received much attention due to their high output voltage and large current [47]. Optimization of the harvesting mechanism also plays a significant role in improving the efficiency of the entire system.…”

Section: Converters For Energy From Vibration and Wind Generatorsmentioning

confidence: 99%

A Review of Fully Integrated and Embedded Power Converters for IoT

2021

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The Internet of Things (IoT) has found application in many components of implantable medical devices, wearable smart devices, monitoring systems, etc. The IoT devices are conventionally battery powered, even though, in several low power applications, they can also be powered using energy harvesting technology. Independently of the power sources (if batteries or environment), efficient and robust power converters must be designed to provide the small and distributed energy required by such IoT devices. This review paper will first provide an overview about the power consumption in IoT devices; second, it will discuss the most recent research and advance in the field of fully-integrated or embedded DC/DC converters, starting from high-performance integrated charge pumps or embedded inductive boost converters for specific harvesting sources (temperature, solar, and so on), to novel DC/DC converters for multiple energy sources.

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Section: Converters For Energy From Vibration and Wind Generatorsmentioning

confidence: 99%

A Review of Fully Integrated and Embedded Power Converters for IoT

2021

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“…By placing the two Halbach arrays facing each other, the magnetic flux is concentrated on the inside where the coil is located and the magnetic flux is low on the outside. [20].…”

Section: Device Configurationmentioning

confidence: 99%

Design and Experiments of a Galloping-Based Wind Energy Harvester Using Quadruple Halbach Arrays

Kwon

2021

Energies

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This study aims to develop a device for harvesting electrical energy from low-speed natural wind. Four linear Halbach arrays are adopted to design a high-performance galloping harvester with the advantage of high durability and efficiency at low-frequency vibrations. The results of magnetic field analysis reveal that there are optimal sizes of the main and transit magnets of the Halbach arrays and coil to obtain the maximum magnetic flux density normal to the coil. The experimental and simulation results show that the electrical external load resistance significantly affects the vibration amplitude and the galloping onset velocity of the harvester. The results also reveal that the performance of the original design using the quadruple Halbach array was lower than that of the existing harvester because of the heavy magnet mass embedded in the tip prism. The modified design, reducing mass, improved the performance by four times compared to the original design.

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“…In literature, the geometry of the harvester is mostly either planar [3,10,11] or tubular [12,16,17]. As shown in Figure 2, both configurations consist of a mover (typically a PM array), a set of coils, and a stator for holding the coil set and for providing structural rigidity.…”

Section: Design Alternativesmentioning

confidence: 99%

“…For harvesting vibration energy, either piezoelectric or electromagnetic energy conversion can be used [1,2]. When high output power is required or the frequency of the vibration is low, electromagnetic harvesters are preferred to piezoelectric types [3,4]. An example of such cases is to harvest the vibration energy of diesel generators.…”

Section: Introductionmentioning

confidence: 99%

Topology Selection and Parametric Design of Electromagnetic Vibration Energy Harvesters by Combining FEA-in-the-Loop and Analytical Approaches

2020

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Electromagnetic energy harvesters have been used to capture low-frequency vibration energy of large machines such as diesel generators. The structure of an electromagnetic energy harvester is either planar or tubular. Past research efforts focus on optimally designing each structure separately. An objective comparison between the two structures is necessary in order to decide which structure is advantageous. When comparing the structures, the design variations such as magnetization patterns and the use of yokes must also be considered. In this study, extensive comparisons are made covering all possible topologies of an electromagnetic energy harvester. A bench mark harvester is defined and the parameters that produce maximum output power are identified for each topology. It is found that the tubular harvesters generally produce larger output power than the planar counterparts. The largest output power is generated by the tubular harvester with a Halbach magnetization pattern (94.7 mW). The second best is the tubular harvester with axial magnetization pattern (79.1 mW) when moving yokes are inserted between permanent magnets for flux concentration. When cost is of primary concern, the tubular harvester with axial pattern may become a best option.

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A Low-Frequency Resonant Electromagnetic Vibration Energy Harvester Employing the Halbach Arrays for Intelligent Wireless Sensor Networks

Cited by 19 publications

References 13 publications

A Review of Fully Integrated and Embedded Power Converters for IoT

A Review of Fully Integrated and Embedded Power Converters for IoT

Design and Experiments of a Galloping-Based Wind Energy Harvester Using Quadruple Halbach Arrays

Topology Selection and Parametric Design of Electromagnetic Vibration Energy Harvesters by Combining FEA-in-the-Loop and Analytical Approaches

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