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Electromotive Force of Piezoelectric/Thermoelectric-Combined Power Generator under Vibration and Temperature Gradient

Naoki KAWAMURA, Ryoya SUZUKI, Kotomu NAITO, Yasuhiro HAYAKAWA, Kenji MURAKAMI, Masaru SHIMOMURA, Hiroya IKEDA

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Summary :

We have investigated the electromotive force (EMF) of a composite sample consisting of a Π-type thermoelectric power generation structure with a pair of n- and p-type Si wafers and piezoelectric devices in order to collect electricity from vibration energy and thermal energy, simultaneously. The observed EMF was obtained by superimposing the oscillating EMF of vibration energy on the constant EMF of thermal energy. Therefore, we have improved the composite sample with diodes for rectifying the oscillating EMF. As a result, the full-wave rectification and the preservation of EMF amplitude were realized. From the frequency dependence, it was found that the dielectric loss of the piezoelectric device influences the amplitude and the time delay in the EMF.

Publication
IEICE TRANSACTIONS on Electronics Vol.E105-C No.10 pp.635-638
Publication Date
2022/10/01
Publicized
2022/04/21
Online ISSN
1745-1353
DOI
10.1587/transele.2021FUS0002
Type of Manuscript
BRIEF PAPER
Category

Authors

Naoki KAWAMURA
  Shizuoka University
Ryoya SUZUKI
  Shizuoka University
Kotomu NAITO
  Shizuoka University
Yasuhiro HAYAKAWA
  Shizuoka University
Kenji MURAKAMI
  Shizuoka University
Masaru SHIMOMURA
  Shizuoka University
Hiroya IKEDA
  Shizuoka University

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