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DC Power Boosting Circuit for Freestanding-Sliding Triboelectric Nanogenerators with High Intrinsic Impedance and Multi-Harmonic Output
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  • Kibae Lee,
  • Ji-Seok Kim,
  • Saewoong Oh,
  • Hyunjoon Yoo,
  • Jongkil Lee,
  • Il -Kwon Oh,
  • Chong Hyun Lee
Kibae Lee
Jeju National University
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Ji-Seok Kim
Korea Advanced Institute of Science and Technology
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Saewoong Oh
Korea Advanced Institute of Science and Technology
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Hyunjoon Yoo
Korea Advanced Institute of Science and Technology
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Jongkil Lee
Andong National University
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Il -Kwon Oh
Korea Advanced Institute of Science and Technology

Corresponding Author:[email protected]

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Chong Hyun Lee
Jeju National University
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Abstract

This study proposes a direct current power supply circuit (DPS) that can match the impedance of the freestanding-sliding mode triboelectric nanogenerator (FS-TENG) with multi-harmonic characteristics and continuously supply power to the load with reduced energy loss. The proposed DPS consists of a double charge circuit (DCC) and a DC conversion circuit based on a comb filtering circuit (CFC). The proposed DPS successfully matched the high internal impedance of the FS-TENG, collected multi-harmonic electrical energy, and provided stable DC voltage for practical applications in real-time. The proposed FS-TENG and DPS supplied a continuous DC voltage of 2.2 V to loads with 0.039 % ripple, while reducing the impedance of the TENG from 221 MΩ to 11 MΩ. The present results demonstrate that the proposed DPS has higher output power than conventional buck and buck-boost converters for the FS-TENG with high impedance and multi-harmonic characteristics. This work presents a significant advancement towards continuous DC power supply utilizing the FS-TENG. In addition, the practical application of the FS-TENG and DPS was successfully demonstrated to drive a self-powered temperature sensor in real-time by generating a constant DC output voltage across a thermistor.