Print Email Facebook Twitter A Self-Bias-Flip with Charge Recycle Interface Circuit with No External Energy Reservoir for Piezoelectric Energy Harvesting Array Title A Self-Bias-Flip with Charge Recycle Interface Circuit with No External Energy Reservoir for Piezoelectric Energy Harvesting Array Author Li, Zhen (Fudan University) Chen, Zhiyuan (Fudan University) Wang, Jing (Fudan University) Wang, Jiawei (Fudan University) Jiang, Junmin (Southern University of Science and Technology) Du, S. (TU Delft Electronic Instrumentation) Cheng, Xu (Fudan University) Zeng, Xiaoyang (Fudan University) Han, Jun (Fudan University) Date 2023 Abstract This article presents a piezoelectric energy harvesting (PEH) interface circuit using a new self-bias-flip with the charge recycle (SBFR) technique without employing any additional energy reservoir. Traditional designs, including synchronous-switch harvesting on inductor (SSHI), synchronous-switch harvesting on capacitor (SSHC), synchronous electric charge extraction (SECE), etc., require additional capacitors or inductors to reverse the voltage on the PEH at the zero-crossing point. This design innovatively uses the inherent capacitors of the piezoelectric harvesters as the flipping capacitors. In order to improve the extract efficiency of the interface, the zero-crossing state is split into a charge recycle stage and a voltage-flip stage. For a piezoelectric array with 2^n PEHs, a configuration with (n-1) phases in the charge recycle stage is adopted to reduce the loss caused by direct charge neutralization. The charge redistribution loss is reduced by employing (2n+1) phases in the voltage-flip stage. The proposed principle has been implemented with discrete components and is verified by three different prototypes. The measurement results show that a flipping efficiency of 67% is achieved by utilizing SBFR with four PEHs. And the proposed interface can provide up to 5.2x improvement when compared with the full-bridge rectifier (FBR). Subject Energy harvestingmaximum output power improving rate (MOPIR)multiple inputpiezoelectric energy harvester (PEH)self-bias-flipsynchronous-switch harvesting on inductor (SSHI) To reference this document use: http://resolver.tudelft.nl/uuid:aca57973-db89-4132-abcd-ca26bfa422ef DOI https://doi.org/10.1109/TPEL.2023.3286399 Embargo date 2024-01-15 ISSN 0885-8993 Source IEEE Transactions on Power Electronics, 38 (9), 11630-11641 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Zhen Li, Zhiyuan Chen, Jing Wang, Jiawei Wang, Junmin Jiang, S. Du, Xu Cheng, Xiaoyang Zeng, Jun Han Files PDF A_Self_Bias_Flip_With_Cha ... _Array.pdf 3.59 MB Close viewer /islandora/object/uuid:aca57973-db89-4132-abcd-ca26bfa422ef/datastream/OBJ/view