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ABSTRACT
This article focuses on the power applications of piezoelectric materials. These materials have been used for many years in applications such as ultrasonic generation or actuation. Recently, other applications have emerged notably the piezoelectric transformer and micro-energy sources. The transformer has found a commercial outlet in the power supply of cold-cathode lamps used for backlighting. Piezoelectric micro-sources, the energy of which is derived from ambient vibrations, seem to predict a bright future for applications such as self-powered abandoned sensor networks.
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Read the articleAUTHORS
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Dejan VASIC: Lecturer at the University of Cergy-Pontoise - Researcher at the SATIE laboratory ENS Cachan
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François COSTA: Professor at the University of Paris Est Créteil - Researcher at the SATIE laboratory ENS Cachan
INTRODUCTION
Piezoelectric materials, which perform direct electromechanical conversion, have been used for many years in power applications such as ultrasonic generation and actuation. The field of use of these materials continues to grow in power electronics, notably with piezoelectric transformers and microenergy sources.
The piezoelectric transformer has found a commercial outlet in cold-cathode lamp power supplies for LCD backlighting, thanks to its voltage-boosting performance.
Piezoelectric microgenerators whose energy is derived from ambient vibration have a promising future in applications such as the self-powering of abandoned sensor arrays, thanks to good electromechanical conversion performance and compatibility with microsystem manufacturing technologies.
The aim of this dossier is to present the potential, but also the constraints, generated by the use of piezoelectric materials in various power electronics applications with :
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Applications of piezoelectric elements in power electronics
Power applications of piezoelectric materials
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Noliac http://www.noliac.com/
PI (Physik Instrumente) http://www.physikinstrumente.com/
Eleceram Technologie http://www.eleceram.com.tw/
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