IEICE Electronics Express
Online ISSN : 1349-2543
A triple-bias Parallel SSHI Rectifier for Piezoelectric Energy Harvesting
Liao WuChenrui GuoMiaomiao GuoYing Long
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JOURNALS FREE ACCESS Advance online publication

Article ID: 16.20190025

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Abstract

The traditional SSHI circuit forms a resonant loop to salvage the charges that would otherwise be wasted. However, the quality factor of the loop would be low. This brief presents a triple-bias parallel SSHI rectifier, which can effectively enhance the power extraction capability from the piezoelectric (PE) transducer. The circuit has a low complexity and is easy to integrate, which can convert the original one voltage flipping into a triple per half cycle, thereby improving the voltage flipping ratio for low quality factor. The experimental results show that, compared to the traditional SSHI circuit, the power obtained by the load is boosted up to 1.23 X.

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© 2019 by The Institute of Electronics, Information and Communication Engineers
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