An 85.5% PCE and 99.31% TE Piezoelectric Energy Harvesting Interface With Sub-One-Cycle Sampling and Dual-Loop MPPT

IF 4 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-01-16 DOI:10.1109/TCSII.2025.3530088

Xufeng Liao;Yiyang Wang;Yu Du;Shihao Xiao;Xincai Liu;Zhangming Zhu;Lianxi Liu

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引用次数: 0

Abstract

This brief presents a high power conversion efficiency (PCE) and tracking efficiency (TE) piezoelectric energy harvesting interface (PEHI). A sub-one-cycle sampling algorithm is proposed to quickly obtain the open-circuit voltage and then reduce the open-circuit sampling loss. To further improve the PCE and TE, a coarse-fine dual-loop (MPPT) is proposed, which balances the MPPT time and accuracy. The proposed interface is implemented in a

$0.18~\mu $

m CMOS process, with a core area of

$949\times 644~\mu $

m2. With the sub-one-cycle sampling algorithm and the dual-loop MPPT control, the proposed PEHI can achieve a peak tracking efficiency of 99.31% and a peak power conversion efficiency (PCE) of 85.5% within the peak open-circuit voltage

$(V_{\mathrm { POC}})$

range from 1 V to 2 V. FOM of the proposed PEHI is improved by about 1.76 times compared to the traditional FOCV PEHIs.

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基于亚一周期采样和双回路MPPT的85.5% PCE和99.31% TE压电能量收集界面

介绍了一种高功率转换效率（PCE）和跟踪效率（TE）的压电能量收集接口（PEHI）。为了快速获取开路电压，降低开路采样损耗，提出了一种次一周期采样算法。为了进一步改善PCE和TE，提出了一种粗-细双环（MPPT），平衡了MPPT的时间和精度。该接口采用$0.18~\mu $ m CMOS工艺实现，核心面积为$949\ × 644~\mu $ m2。采用子一周期采样算法和双环MPPT控制，在1 ~ 2 V的峰值开路电压$(V_{\ mathm {POC}})$范围内，PEHI的峰值跟踪效率为99.31%，峰值功率转换效率（PCE）为85.5%。与传统的FOCV PEHIs相比，该PEHI的FOM提高了约1.76倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.