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Communication Dans Un Congrès Année : 2019

Effects of disc-shaped piezoelectric size reduction on resonant inductorless DC-DC converter

Résumé

This paper studies the impact of disc-shaped piezoelectric resonator dimensions on a non-isolated inductorless piezoelectric DC-DC converter. An analytical model, linking geometrical parameters to output power and efficiency is introduced. This later reveals the benefits of reducing the thickness and diameter of the piezoelectric disk. Five piezoelectric discs with different dimensions are tested and compared in experimental works, giving very high efficiency up to 98% and output power up to 1.7 W. An exceptional power density of 366 W.cm-3 was measured at 450 kHz for a 25-30 Volt conversion with an efficiency of 81%.
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Dates et versions

hal-02172105 , version 1 (03-07-2019)
hal-02172105 , version 2 (02-10-2019)

Identifiants

Citer

Benjamin Pollet, Mustapha Touhami, Ghislain Despesse, François Costa. Effects of disc-shaped piezoelectric size reduction on resonant inductorless DC-DC converter. Transducers/ Eurosensor, Jun 2019, Berlin, Germany. pp.1423-1426, ⟨10.1109/TRANSDUCERS.2019.8808328⟩. ⟨hal-02172105v2⟩
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