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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| Veröffentlicht in: | IEEE transactions on power electronics Jg. 29; H. 2; S. 729 - 739 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Journal Article |
| Sprache: | Englisch |
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New York, NY
IEEE
01.02.2014
Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
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| ISSN: | 0885-8993, 1941-0107 |
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| Abstract | 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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| AbstractList | 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. 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 x 12.7 x 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. [PUBLICATION ABSTRACT] 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 mu W per source. As part of the best tradeoff between harvested and intrinsic power, an overall energy efficiency up to 74% was achieved. |
| Author | Romani, Aldo Tartagni, Marco Filippi, Matteo |
| Author_xml | – sequence: 1 givenname: Aldo surname: Romani fullname: Romani, Aldo email: aldo.romani@unibo.it organization: Adv. Res. Center on Electron. Syst. (ARCES), Univ. of Bologna, Cesena, Italy – sequence: 2 givenname: Matteo surname: Filippi fullname: Filippi, Matteo email: mfilippi@arces.unibo.it organization: Adv. Res. Center on Electron. Syst. (ARCES), Univ. of Bologna, Cesena, Italy – sequence: 3 givenname: Marco surname: Tartagni fullname: Tartagni, Marco email: marco.tartagni@unibo.it organization: Adv. Res. Center on Electron. Syst. (ARCES), Univ. of Bologna, Cesena, Italy |
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| Keywords | 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 |
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| SubjectTerms | 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 |
| Title | Micropower Design of a Fully Autonomous Energy Harvesting Circuit for Arrays of Piezoelectric Transducers |
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