Linear and non-linear behavior of mechanical resonators for optimized inertial electromagnetic microgenerators

Serre, C.; Pérez-Rodrı́guez, A.; Fondevilla, N.; Martincic, Émile; Morante, J.R.; Montserrat, J.; Estéve, J.

doi:10.1007/s00542-009-0825-2

Cited by 17 publications

(8 citation statements)

References 9 publications

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“…Moreover, the wound coil-type EMPGs have lesser prospect in being integrated into the planar micro fabrication processes. The planar coil-type EMPGs [5,11,13,14,18,27,28,30] mostly have less coil resistance but produce low output voltages (<180 mV) and will need a special ULV rectifier and multiplier circuit for practical usage.…”

Section: Experimental Setup and Resultsmentioning

confidence: 99%

“…The authors reported a 40 mV voltage amplitude and 100 μW power generation at the excitation frequency of 60 Hz. A membranetype EMPG, containing a 127 μm thick kapton membrane to support NdFeB magnets, that moves within a recess provided in a silicon wafer (wafer 1), and within a printed circuit board (PCB) frame (wafer 2) has been reported by Serre et al [14]. The recess is produced by bulk micro-machining.…”

Section: Moving Magnet Empgsmentioning

confidence: 99%

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Copper foil-type vibration-based electromagnetic energy harvester

Khan

Sassani

Stoeber

2010

J. Micromech. Microeng.

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This paper presents the modeling, simulation, fabrication and experimental results of a vibration-based electromagnetic power generator (EMPG). A novel, low-cost, one-mask technique is used to fabricate the planar coils and the planar spring. This fabrication technique can provide an alternative for processes such as lithographie galvanoformung abformung (LIGA) or SU-8 molding and MEMS electroplating. Commercially available copper foils of 20 μm and 350 μm thicknesses are used for the planar coils and planar spring, respectively. The design with planar coils on either side of the magnets provides enhanced power generation for the same footprint of the device. The harvester's overall volume is 1 cm 3 . Excitation of the EMPG, at the fundamental frequency of 371 Hz, base acceleration of 13.5 g and base amplitude of 24.4 μm, yields an open circuit voltage of 60.1 mV, as well as 46.3 mV load voltage and 10.7 μW power for a 100 load resistance. At a matching impedance of 7.5 the device produced a maximum power of 23.56 μW and a power density of 23.56 μW cm −3 . The simulations based on the analytical model of the device show good agreement with the experimental results.

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Section: Experimental Setup and Resultsmentioning

confidence: 99%

Section: Moving Magnet Empgsmentioning

confidence: 99%

Copper foil-type vibration-based electromagnetic energy harvester

Khan

Sassani

Stoeber

2010

J. Micromech. Microeng.

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“…The geometry of the coil for optimization of the electromagnetic coupling in the devices by ANSYS was described and proposed in publications (Christophe et al 2008;Benasciutti et al 2010). Two-stage procedure (lumped-parameter simulation and magneto-static finite element simulation) was clarified in publications (Buren and Troster 2007;Serre et al 2009), where mechanical resonance frequency and load resistance are optimized regarding maximum output power. Taguchi optimization strategy was presented in publication (Baekho et al 2007) and papers (Messine et al 1998;Song et al 2009) present other deterministic methods.…”

Section: Optimization Methods For Development Of Energy Harvesting Apmentioning

confidence: 99%

Artificial intelligence based optimization for vibration energy harvesting applications

et al. 2012

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This paper deals with optimization studies based on artificial intelligence methods. These modern optimization methods can be very useful for design improving of an electromagnetic vibration energy harvester. The vibration energy harvester is a complex mechatronic device which harvests electrical energy from ambient mechanical vibrations. The harvester design consists of a precise mechanical resonator, electromagnetic converter and electronics. The optimization study of such complex mechatronic device is complicated however artificial intelligence methods can be used for set up of optimal harvester parameters. Used optimization strategies are applied to optimize the design of the electro-magnetic vibration energy harvester according to multi-objective fitness functions. Optimization results of the harvester are summarized in this paper. Presented optimization algorithms can be used for a design of new energy harvesting systems or for improving on existing energy harvesting systems.

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“…Both rigid PCB made of FR-4 boards [13][14][15][16] and flexible PCB made of polyimide (PI) films [17,18] have been used to fabricate energy harvesters. In [13], resonant structures such as cantilever beams were fabricated in FR-4 boards, and magnets were attached to the resonant structures as mass.…”

Section: Introductionmentioning

confidence: 99%

Wideband vibrational electromagnetic energy harvesters with nonlinear polyimide springs based on rigid-flex printed circuit boards technology

Chiu

Hong

Hsu

2016

Smart Mater. Struct.

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A wideband vibrational electromagnetic energy harvester employing nonlinear spring effects is proposed and demonstrated. The harvesters were designed and fabricated by commercial rigidflex printed circuit boards technology. Rigid FR-4 boards were used for mechanical support and coil winding, whereas flexible polyimide films were patterned for mechanical springs and mass platforms. Two sets of coils were patterned and fabricated in the harvester with an internal coil resistance of about 16 Ω each. Two rare-earth magnets were attached to the central platform as shuttle mass. The total dimension of the harvester was 20×20×4 mm 3 . In vibration tests, nonlinearity could be observed even at 0.1 g rms vibration level due to the spring hardening effect. The frequency for peak induced voltage increased from 187 Hz at low vibration to 382 Hz at 5 g rms vibration. The effective half-power bandwidth increased from 8 Hz at 0.1 g rms to 32 Hz at 1 g rms and 52 Hz at 5 g rms due to the hysteresis in frequency response. For a matched load and 1 g rms vibration at 250 Hz, the maximum output power was 160 nW, corresponding to a power density of 100 nW cm −3 .

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Linear and non-linear behavior of mechanical resonators for optimized inertial electromagnetic microgenerators

Cited by 17 publications

References 9 publications

Copper foil-type vibration-based electromagnetic energy harvester

Copper foil-type vibration-based electromagnetic energy harvester

Artificial intelligence based optimization for vibration energy harvesting applications

Wideband vibrational electromagnetic energy harvesters with nonlinear polyimide springs based on rigid-flex printed circuit boards technology

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