Micropower Design of a Fully Autonomous Energy Harvesting Circuit for Arrays of Piezoelectric Transducers

This paper presents a self-powered energy harvesting circuit based on synchronous charge extraction with a single shared inductor for power conversion from arrays of independent piezoelectric transducers. The number of handled elements can be easily increased at the expense of few additional compone...

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Vydáno v:IEEE transactions on power electronics Ročník 29; číslo 2; s. 729 - 739
Hlavní autoři: Romani, Aldo, Filippi, Matteo, Tartagni, Marco
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.02.2014
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Acoustic wave devices, piezoelectric and piezoresistive devices
Active control
Applied sciences
Arrays
Circuits
Electrical engineering. Electrical power engineering
Electronics
Energy
Energy efficiency
Energy harvesting
Energy. Thermal use of fuels
Exact sciences and technology
Harvesting
Inductors
Magnetic devices
Maximum power
micropower design
piezoelectric arrays
Piezoelectric transducers
Power electronics, power supplies
Power supply
Rational use of energy: conservation and recovery of energy
RLC circuits
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Switches
synchronous charge extraction
Transducers
Vibrations
Performance evaluation
Autonomous system
piezoelectric arrays
Output power
Worst case method
Energy harvesting
Inductor
Cantilever beam
synchronous charge extraction
Active system
Energetic efficiency
Energy conversion
Active control
piezoelectric transducers
Piezoelectric sensor
Vibration
Power circuit
Energy recovery
Power electronics
micropower design
Operating conditions
Piezoelectric materials
Power control
Starting
Low-power electronics
Comparative study
Electromechanical properties
ISSN:0885-8993, 1941-0107
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Popis
Shrnutí:This paper presents a self-powered energy harvesting circuit based on synchronous charge extraction with a single shared inductor for power conversion from arrays of independent piezoelectric transducers. The number of handled elements can be easily increased at the expense of few additional components and without affecting performance. The energy harvesting circuit was characterized with three 0.5 × 12.7 × 31.8 mm 3 piezoelectric cantilevers subject to different types of vibrations. Throughout all operating conditions, the circuit was able to extract the maximum power independently from every transducer. Compared to passive energy harvesting interfaces, the output power is significantly higher, with worst-case increases ranging from +75% to +184%. The circuit starts up passively and is based on ultralow power active control, which consumes during operation at 3 V a fraction of the extra harvested power as low as 10 μW per source. As part of the best tradeoff between harvested and intrinsic power, an overall energy efficiency up to 74% was achieved.
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ISSN:0885-8993
1941-0107
DOI:10.1109/TPEL.2013.2257856