A Self-Powered High-Efficiency Rectifier With Automatic Resetting of Transducer Capacitance in Piezoelectric Energy Harvesting Systems
- 4 April 2014
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Very Large Scale Integration (VLSI) Systems
- Vol. 23 (3), 444-453
- https://doi.org/10.1109/tvlsi.2014.2312532
Abstract
This paper presents a self-powered rectifier for piezoelectric energy harvesting applications, and the key idea of the proposed system is to reset the transducer capacitor at optimal instants to maximize the extracted power. The proposed rectifier consists of two switches and two active diodes. The switches discharge the transducer capacitor at optimal instants two times for every cycle. The active diodes are based on op-amps with a preset dc offset, which reduces the voltage drop and the leakage current and avoids instability. In addition, the controller for the proposed rectifier is simple to reduce the circuit complexity and the power dissipation. The proposed rectifier was designed and fabricated in 0.18-μm CMOS technology. Measured results indicate that it achieves power efficiency of 91.2%, and the amount of power extracted by the proposed rectifier is 3.5 times larger when compared with the conventional rectifiers. The proposed rectifier does not require any off chip components to enable a full chip integration, and the die area of the proposed circuit is 0.08 × 0.20 mm 2 .Keywords
Funding Information
- Ministry of Education, Science Technology
- National Research Foundation of Korea through the Human Resource Training Project for Regional Innovation
This publication has 12 references indexed in Scilit:
- A Self-Powered Power Conditioning IC for Piezoelectric Energy Harvesting From Short-Duration VibrationsIEEE Transactions on Circuits and Systems II: Express Briefs, 2012
- Vibration Energy Scavenging System With Maximum Power Tracking for Micropower ApplicationsIEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2010
- Self-Contained Resonant Rectifier for Piezoelectric Sources Under Variable Mechanical ExcitationIEEE Transactions on Power Electronics, 2010
- An Efficiency-Enhanced CMOS Rectifier With Unbalanced-Biased Comparators for Transcutaneous-Powered High-Current ImplantsIEEE Journal of Solid-State Circuits, 2009
- An optimized self-powered switching circuit for non-linear energy harvesting with low voltage outputSmart Materials and Structures, 2008
- Active self supplied AC-DC converter for piezoelectric energy scavenging systems with supply independent biasPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2008
- Integrated Low-Loss CMOS Active Rectifier for Wirelessly Powered DevicesIEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 2006
- Piezoelectric Micro-Power Generation Interface CircuitsIEEE Journal of Solid-State Circuits, 2006
- Toward energy harvesting using active materials and conversion improvement by nonlinear processingIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2005
- Adaptive piezoelectric energy harvesting circuit for wireless remote power supplyIEEE Transactions on Power Electronics, 2002