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http://dx.doi.org/10.6113/TKPE.2020.25.4.243

Three-Stage Power Management System Employing Impedance Coupler Switch for Triboelectric Nanogenerator  

Yoon, Bo-Kyung (School of Electrical & Computer Engineering, UNIST)
Lee, Jun-Young (School of Electrical & Computer Engineering, UNIST)
Jun, Jee-Hoon (School of Electrical & Computer Engineering, UNIST)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.25, no.4, 2020 , pp. 243-250 More about this Journal
Abstract
Energy harvesting is a recent technology involving the harvest and utilization of extremely small surrounding energy. Energy harvesting research is conducted in various fields. Triboelectric nanogenerators (TENGs) are energy harvesting technologies that use static electricity generated by physical movement or friction. Although TENGs generate output power in microwatt levels, they experience high internal impedance compared with other energy harvesting generators, thereby making the continuous transfer of electric power to loads difficult. This study proposes a power management system for TENGs that consists of three stages, that is, an AC/DC rectifier, an impedance coupler switch with a capacitor bank, and a DC/DC converter. In addition, the selection method of the AC/DC rectifier and DC/DC converter is proposed to maximize the amount of power transferred from energy harvesting areas. Furthermore, the impedance coupler switch and capacitor bank are discussed in detail. The validity and performance of the proposed three-stage power management system for TENGs are verified using a prototype system.
Keywords
EH(Energy Harvesting); TENG(Triboelectric Nanogenerator); Renewable energy; Power management;
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