A hybrid energy scavenging topology for human-powered mobile electronics

Khaligh, Alireza; Zeng, Peng; Wu, Xiaochun; Xu, Yang

doi:10.1109/iecon.2008.4757995

Cited by 35 publications

(31 citation statements)

References 15 publications

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“…Piezoelectric and electrostatic mechanisms are suitable for small size harvesters in view of their compatibility with standard microelectromechnical systems (MEMS) manufacturing procedure, while electromagnetic mechanisms are more suitable for large size harvesters. In recent studies, the hybrid energy harvesting technology is being increasingly investigated (Khaligh et al, 2008;Wacharasindhu and Kwon, 2008;Challa et al, 2009;Tadesse et al, 2009;Yang et al, 2010;Kim et al, 2012;Shan et al, 2013). Usually, for hybrid energy harvesting, the PEH and EMEH should be on the same scale (for comparable power output), otherwise the hybrid scheme will be meaningless.…”

Section: Introductionmentioning

confidence: 99%

A 2DOF hybrid energy harvester based on combined piezoelectric and electromagnetic conversion mechanisms

Wang

Tang

Guo

et al. 2014

J. Zhejiang Univ. Sci. A

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Abstract:This paper presents a two-degree-of-freedom (2DOF) hybrid piezoelectric-electromagnetic energy harvester (P-EMEH). Such a 2DOF system is designed to achieve two close resonant frequencies. The combined piezoelectricelectromagnetic conversion mechanism is exploited to further improve the total power output of the system in comparison to a stand-alone piezoelectric or electromagnetic conversion mechanism. First, a mathematical model for the 2DOF hybrid P-EMEH is established. Subsequently, the maximal power output of the 2DOF hybrid P-EMEH is compared both experimentally and theoretically with those from the 1DOF piezoelectric energy harvester (PEH), 1DOF electromagnetic energy harvester (EMEH), 2DOF PEH, and 2DOF EMEH. Based on the validated mathematical model, the effect of the effective electromechanical coupling coefficients (EMCC) on the maximal power outputs from various harvester configurations is analyzed. The results indicate that for the 2DOF hybrid P-EMEH, although the increase of the power output from one electromechanical transducer will lead to the decrease of the power output from the other, the overall performance of the system is improved in weak and medium coupling regimes by increasing electromechanical coupling. In weak and medium coupling scenarios, the hybrid energy harvester configuration is advantageous over conventional 1DOF or 2DOF harvester configurations with a stand-alone conversion mechanism.

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Section: Introductionmentioning

confidence: 99%

A 2DOF hybrid energy harvester based on combined piezoelectric and electromagnetic conversion mechanisms

Wang

Tang

Guo

et al. 2014

J. Zhejiang Univ. Sci. A

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“…In (Li et al, 2010), a piezoelectric cantilever working at lower frequencies of operation (65Hz), generating higher voltages (up to 15V) and in consequence presented a maximum power of 350μW. An interesting point of progress is shown in (Khaligh et al, 2008), where two power sources are combined: a piezoelectric and permanent magnetic energy scavenging. These elements are discrete and the total power theoretically generated is 44mW: 37mW from the electromagnetic source and 6mW from the piezoelectric source.…”

Section: Energy Harvesting and Ambient Energy Sourcesmentioning

confidence: 99%

Portable Bio-Devices: Design of electrochemical instruments from miniaturized to implantable devices

Colomer‐Farrarons¹,

Miribel-Català²,

Rodríguez-Villarreal³

et al. 2011

New Perspectives in Biosensors Technology and Applications

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“…[7], [15][16][17]. Thus, to secure a necessary and useful power source to the electromechanical device, the generator should be able to produce sufficient power.…”

Section: Introductionmentioning

confidence: 99%

“…2, human body displacements represent an interesting renewable energy resource. This is why the old idea of human energy harvesting has been considered in our case as it was done by some researchers [16][17][18][19][20]. Recovering a modest part would allow the generation of useful energy to create adaptive and selfsupplied orthopedic prostheses.…”

Section: Introductionmentioning

confidence: 99%

Preliminary study of a pendulum in vivo electromechanical generator for orthopedic implants

Turri¹,

Benbouzid²

2009

2009 35th Annual Conference of IEEE Industrial Electronics

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Abstract-This paper presents the principle and the energy potential of an original electromechanical generator that uses human body natural motions during walking, in order to create an autonomous generator. This in vivo and noninvasive system is intended to be used in intelligent knee prosthesis. As the combined human, mechanical, and electrical phenomena are very significant, a mechanical and an electrical study are then carried to evaluate the recoverable power.

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A hybrid energy scavenging topology for human-powered mobile electronics

Cited by 35 publications

References 15 publications

A 2DOF hybrid energy harvester based on combined piezoelectric and electromagnetic conversion mechanisms

A 2DOF hybrid energy harvester based on combined piezoelectric and electromagnetic conversion mechanisms

Portable Bio-Devices: Design of electrochemical instruments from miniaturized to implantable devices

Preliminary study of a pendulum in vivo electromechanical generator for orthopedic implants

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