A Tunable Hybrid SSHI Strategy for Piezoelectric Energy Harvesting with Enhanced Off-resonance Performances
Résumé
In this paper, we propose a new electrical strategy for piezoelectric energy harvesting: the Tunable Hybrid SSHI. This strategy, inspired from the hybrid SSHI of Lallart et al., combines features of the parallel SSHI with a modified series SSHI. We prove analytically and numerically that with a fine combination of those two strategies, the harvesting bandwidth can be sensibly increased. Associated with a high coupling harvester, it is shown that the harvesting bandwidth is 3 times larger compared to the series and parallel SSHI.
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