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| 講演名 | 2018-11-02 16:00 ［招待講演］Piezoelectric Energy Harvesting Systems ○Kenji Uchino（Penn State Univ.）  US2018-69 |
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| 抄録 | （和） | Energy recovery from wasted or unused power has been the topic of discussion for a long time. In recent years, industrial and academic research units have focused on harvesting energy from mechanical vibrations using piezoelectric transducers. These efforts have provided the research guidelines and have brought in light the problems and limitations of implementing the piezoelectric transducer. There are three major phases/steps associated with piezoelectric energy harvesting: (i) mechanical-mechanical energy transfer, including mechanical stability of the piezoelectric transducer under large stresses, and mechanical impedance matching, (ii) mechanical-electrical energy transduction, relating with the electromechanical coupling factor in the composite transducer structure, and (iii) electrical-electrical energy transfer, including electrical impedance matching, such as a DC/DC converter to accumulate the energy into a rechargeable battery. This paper starts from the historical background of piezoelectric energy harvesting, followed by a brief review of recent research trends by pointing out several misconceptions by the researchers. The main parts deal with step-by-step detailed energy flow analysis in energy harvesting systems with typical piezoelectrics, lead zirconate titanates (PZT's), in order to provide comprehensive strategies on how to improve the efficiency of the harvesting system. We also introduce a hybrid energy harvesting system from magnetic field noise using a composite of piezoelectric and magnetostricive materials. |
| （英） | Energy recovery from wasted or unused power has been the topic of discussion for a long time. In recent years, industrial and academic research units have focused on harvesting energy from mechanical vibrations using piezoelectric transducers. These efforts have provided the research guidelines and have brought in light the problems and limitations of implementing the piezoelectric transducer. There are three major phases/steps associated with piezoelectric energy harvesting: (i) mechanical-mechanical energy transfer, including mechanical stability of the piezoelectric transducer under large stresses, and mechanical impedance matching, (ii) mechanical-electrical energy transduction, relating with the electromechanical coupling factor in the composite transducer structure, and (iii) electrical-electrical energy transfer, including electrical impedance matching, such as a DC/DC converter to accumulate the energy into a rechargeable battery. This paper starts from the historical background of piezoelectric energy harvesting, followed by a brief review of recent research trends by pointing out several misconceptions by the researchers. The main parts deal with step-by-step detailed energy flow analysis in energy harvesting systems with typical piezoelectrics, lead zirconate titanates (PZT's), in order to provide comprehensive strategies on how to improve the efficiency of the harvesting system. We also introduce a hybrid energy harvesting system from magnetic field noise using a composite of piezoelectric and magnetostricive materials. | |
| キーワード | （和） | Piezoelectric energy harvesting / piezoelectric ceramics / PZT / acoustic impedance / electric impedance matching / electromechanical coupling factor / DC/DC converter / magnetoelectric energy harvesting |
| （英） | Piezoelectric energy harvesting / piezoelectric ceramics / PZT / acoustic impedance / electric impedance matching / electromechanical coupling factor / DC/DC converter / magnetoelectric energy harvesting | |
| 文献情報 | 信学技報, vol. 118, no. 277, US2018-69, pp. 31-46, 2018年11月. | |
| 資料番号 | US2018-69 | |
| 発行日 | 2018-10-26 (US) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| 著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します．(許諾番号：10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| PDFダウンロード | US2018-69 |
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| 研究会情報 | |
| 研究会 | US |
| 開催期間 | 2018-11-02 - 2018-11-02 |
| 開催地（和） | 愛知工業大学 |
| 開催地（英） | |
| テーマ（和） | 一般 |
| テーマ（英） | |
| 講演論文情報の詳細 | |
| 申込み研究会 | US |
| 会議コード | 2018-11-US |
| 本文の言語 | 英語 |
| タイトル（和） | |
| サブタイトル（和） | |
| タイトル（英） | Piezoelectric Energy Harvesting Systems |
| サブタイトル（英） | |
| キーワード(1)（和/英） | Piezoelectric energy harvesting / Piezoelectric energy harvesting |
| キーワード(2)（和/英） | piezoelectric ceramics / piezoelectric ceramics |
| キーワード(3)（和/英） | PZT / PZT |
| キーワード(4)（和/英） | acoustic impedance / acoustic impedance |
| キーワード(5)（和/英） | electric impedance matching / electric impedance matching |
| キーワード(6)（和/英） | electromechanical coupling factor / electromechanical coupling factor |
| キーワード(7)（和/英） | DC/DC converter / DC/DC converter |
| キーワード(8)（和/英） | magnetoelectric energy harvesting / magnetoelectric energy harvesting |
| 第1著者 氏名（和/英/ヨミ） | Kenji Uchino / Kenji Uchino / |
| 第1著者 所属（和/英） | The Penn State University (略称： Penn State Univ.) The Penn State University (略称： Penn State Univ.) |
| 講演者 | 第1著者 |
| 発表日時 | 2018-11-02 16:00:00 |
| 発表時間 | 50分 |
| 申込先研究会 | US |
| 資料番号 | US2018-69 |
| 巻番号（vol） | vol.118 |
| 号番号（no） | no.277 |
| ページ範囲 | pp.31-46 |
| ページ数 | 16 |
| 発行日 | 2018-10-26 (US) |
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