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RISS 인기검색어
- 검색키워드
- 저자 : Galayko, Dimitri (검색결과 2 건)
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Bennet's doubler working as a power booster for triboelectric nano-generators
Ghaffarinejad, A.,Lu, Y.,Hinchet, R.,Galayko, D.,Hasani, J.Y.,Kim, S.W.,Basset, P. Institution of Electrical Engineers 2018 Electronics letters Vol.54 No.6
<P>In this Letter, the authors introduce for the first time how a Bennet's doubler conditioning circuit will boost the extracted energy from an electrostatic kinetic energy harvester based on triboelectricity. With zero initial bias on all capacitors, after 1000 charging cycles, the harvested power is amplified by more than 2 orders of magnitude by the Bennet's doubler in comparison to a half-wave diode bridge. The harvested energy derived from a 3 x 3 cm(2) device made of polymer PFA and aluminium is at least 4.6 J per tap with the Bennet's doubler conditioning circuit, and only 30 nJ per tap with the half-wave bridge.</P>
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A conditioning circuit with exponential enhancement of output energy for triboelectric nanogenerator
Ghaffarinejad, Ali,Hasani, Javad Yavand,Hinchet, Ronan,Lu, Yingxian,Zhang, Hemin,Karami, Armine,Galayko, Dimitri,Kim, Sang-Woo,Basset, Philippe Elsevier 2018 Nano energy Vol.51 No.-
<P><B>Abstract</B></P> <P>Triboelectric-electret nanogenerators (T-ENG) are characterized by their high output voltage and small current and therefore a relatively low output power, making them limited to small power consuming electronics. Here we report a self-enhancing conditioning circuit (CC) that exponentially amplifies the output electrical energy converted from the mechanical domain of a T-ENG, in orders of magnitude compared to traditional CC. The circuit, working on the principles of Bennet’s doubler device, is inductorless and uses only diodes as automatic switches to reconfigure the charge storing capacitors between series and parallel modes. We previously reported this circuit in saturation and stable mode for T-ENG and compared the performances with half-wave rectifier. Here we investigate the circuit performance in exponential and unstable mode in comparison with half-wave and full-wave rectifiers. Theoretical analysis is presented to study the operation of the circuit and to find out the required conditions for the Bennet’s doubler to work in exponential boosting mode. Output performance of half and full wave rectifiers are compared theoretically. Simulations and experiments are performed to verify the theoretical discussions and to present the effect of non-ideal circuit elements on the output performance of the T-ENG.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We report a conditioning circuit (CC) for triboelectric-electret nanogenerators (T-ENG’s) based on the Bennet’s charge doubler. </LI> <LI> The proposed CC for the T-ENG employs only capacitors and diodes as automatic switching elements. </LI> <LI> A theoretical analysis of the Bennet’s doubler and its application for T-ENG is presented. </LI> <LI> Theoretical and experimental results indicate highly superior capability of the Bennet’s doubler compared to classical diode bridges. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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