Array of piezoelectric energy harvesters

I. C. Lien; Y. C. Shu

doi:10.1117/12.880260

27 April 2011 Array of piezoelectric energy harvesters

I. C. Lien, Y. C. Shu

Proceedings Volume 7977, Active and Passive Smart Structures and Integrated Systems 2011; 79770K (2011) https://doi.org/10.1117/12.880260
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2011, San Diego, California, United States

Abstract

This article analyzes the electrical behavior of an array of piezoelectric energy harvesters endowed with several interfacing circuits, including the standard AC/DC circuit and parallel/series SSHI (synchronized switch harvesting on inductor) circuits. The harvesters are classified according to the connection to a single or multiple rectifiers. The analytic estimates of harvested power are derived explicitly for different cases. The results show that DC power output changes from the power-boosting mode to the wideband mode according to various degrees of differences in the parameters of harvesters. In particular, the system with multiple rectifiers exhibits more bandwidth improvement than that with a single rectifier. Finally, it is shown that the electrical performance of an SSHI array system enjoys both power boosting and bandwidth improvement.

Citation Download Citation

I. C. Lien and Y. C. Shu "Array of piezoelectric energy harvesters", Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 79770K (27 April 2011); https://doi.org/10.1117/12.880260

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