An Efficient Rectifier Hybridizing Synchronized Electric Charge Extraction and Bias-Flipping for Triboelectric Energy Harvesting
Wenyu Peng (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Willem Van Driel (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Guoqi Zhang (TU Delft - Electrical Engineering, Mathematics and Computer Science)
Sijun Du (TU Delft - Electrical Engineering, Mathematics and Computer Science)
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Abstract
A triboelectric nanogenerator (TENG) is a kinetic energy transducer with small and time-varying internal capacitance, which increases the difficulties of extracting harvested energy. In this paper, an efficient rectifier, hybridizing synchronized electric charge extraction (SECE) and bias-flipping techniques, is proposed. The two techniques alternatively operate at opposite voltage polarities of the TENG. By taking advantage of the varying capacitance, the proposed synchronized extraction and flipping (SEF) rectifier shows significantly improved energy extraction performance. The design is implemented in a 180-nm high-voltage BCD technology, and the results show a 7.4X energy extraction enhancement, 65-V voltage tolerance, and 35-nA quiescent current.