2017
DOI: 10.1016/j.apenergy.2017.04.006
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An electromagnetic wearable 3-DoF resonance human body motion energy harvester using ferrofluid as a lubricant

Abstract: Wearable Energy harvester offers clean and continuous power for wearable sensors or devices, which can play an important role in the health monitoring, motion track and so on. In this study, we investigated a small electromagnetic resonance wearable kinetic energy harvester. A permanent magnet (PM) which was tied with two springs is forming a 3-degree-of-freedom (3-DoF) vibrator and is put in a box. Ferrofluid was adopted which is adsorbed at the pole of PM and makes the PM away from the surface of the box whi… Show more

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Cited by 76 publications
(31 citation statements)
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“…Typically, an axially magnetized permanent magnet oscillating inside a cylindrical coil along the axis of the coil is used [32,35,37,39]; in other cases, the permanent magnet oscillating radially at the end of the coil is used [36,38]. The oscillation evoked by human motions is maintained by using mechanical spring [36], magnetic spring [32,35,39], or both [37]. Some energy harvesters use human joint motion directly for achieving relative movement between a permanent magnet and a coil [33,38].…”
Section: Electromagnetic Energy Harvester: Inertial Induction Typementioning
confidence: 99%
See 1 more Smart Citation
“…Typically, an axially magnetized permanent magnet oscillating inside a cylindrical coil along the axis of the coil is used [32,35,37,39]; in other cases, the permanent magnet oscillating radially at the end of the coil is used [36,38]. The oscillation evoked by human motions is maintained by using mechanical spring [36], magnetic spring [32,35,39], or both [37]. Some energy harvesters use human joint motion directly for achieving relative movement between a permanent magnet and a coil [33,38].…”
Section: Electromagnetic Energy Harvester: Inertial Induction Typementioning
confidence: 99%
“…Energy harvesting principles for mechanical kinetic energy include piezoelectric [10][11][12][13][14][15][16][17][18][19][20][21], triboelectric [22][23][24][25][26][27][28][29][30][31], and electromagnetic energy harvesting [1,[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48], as shown in Figure 1. Electromagnetic generators can be categorized into two types, namely inertial induction [32][33][34][35][36][37][38][39] and gear-and-generator [1,…”
Section: Introductionmentioning
confidence: 99%
“…Later in the book titled "ferrohydrodynamic", Rosensweig gave a detailed description on the particular magnetic levitation force (selfsuspension buoyancy) by means of magnetic fluid stress tensor [3]. Up to now, this property of magnetic fluid has been exploited in many innovative devices, such as dampers [4][5][6], sensors [7][8][9][10][11], actuators [12][13][14], bearings [15,16], micromechanical system [17][18][19] and so on.…”
Section: Introductionmentioning
confidence: 99%
“…In our environment, there are a variety of ambient energy sources such as solar, temperature, wind and vibration. Converting waste ambient energy into small amounts of electrical energy can power many useful low energy consuming Micro Electro Mechanical systems (MEMS) in different applications ranging from wireless sensor networks to medical implants [1][2][3][4][5].…”
Section: Introductionmentioning
confidence: 99%