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| DC 欄位 | 值 | 語言 |
|---|---|---|
| dc.contributor.advisor | 吳文中(Wen-Jong Wu),Dejan VASIC(Dejan VASIC) | |
| dc.contributor.author | Chao-Ting Chen | en |
| dc.contributor.author | 陳昭廷 | zh_TW |
| dc.date.accessioned | 2022-11-25T05:35:18Z | - |
| dc.date.available | 2026-11-09 | |
| dc.date.copyright | 2022-01-03 | |
| dc.date.issued | 2021 | |
| dc.date.submitted | 2021-11-09 | |
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/82074 | - |
| dc.description.abstract | 近年來隨著人們對於環境永續的意識日漸提升，風力發電逐漸成為永續能源的選項之一，但風力發電機在長期運作時，葉片常會受到帶有沙石的強風衝擊，進而降低葉片的使用壽命，定期進行葉片表面損傷偵測為目前主要的監測方式，然而若要做到即時的偵測，必須從發電機牽電力線至旋轉的葉片上，但此牽線方式較難以實現，故本論文將研發一個壓電能量擷取器，預計裝設於風機葉片上，透過擷取風機的轉動能轉換為電能，提供表面損傷偵測系統使用。 本論文所研發之旋轉式能量擷取器，透過壓電元件形狀的最佳化設計，使結構具有更好的彈性，並避免結構中應力集中之問題，在0.5g垂直震盪測試下，三角形結構設計能有效的提升34.7%的輸出功率，並且對於更大外力的刺激下，也具有更穩定的輸出表現，為了使元件能夠運作在風力發電機低轉速(5 rpm – 30 rpm)的環境下，本研究引入了非接觸式的磁斥力升頻率技術，使元件可以運作在其非共振頻率範圍(0.08 Hz – 0.5 Hz)的外力刺激環境中，在經過不同磁力形式的最佳化後，除了於PSIM及Simulink上建立其等效電路模型之外，其一體化之封裝設計也將於此論文中呈現，此封裝設計大小約為直徑52 mm厚度14 mm。 為了驗證此封裝設計能夠在實際風機轉動的情況下，提供足夠的能量驅動表面損傷偵測系統運作，此封裝將放置在實驗室小尺寸的旋轉葉片上進行輸出表現的量測，並採用實際風機葉片於一日內的轉速做為測試條件，最終之結果顯示一天的輸出能量約為1.05 J，此能量已大於表面損傷系統一天的能量所需量約為0.2J，此量測結果顯示所研發之旋轉能量擷取元件，足以實現此表面損傷系統自供電之能量需求。 | zh_TW |
| dc.description.provenance | Made available in DSpace on 2022-11-25T05:35:18Z (GMT). No. of bitstreams: 1 U0001-0911202117194600.pdf: 13140709 bytes, checksum: c82cb980ddbc024511fa18d92b714b3e (MD5) Previous issue date: 2021 | en |
| dc.description.tableofcontents | 致謝 i 中文摘要 iii ABSTRACT iv LIST OF FIGURES viii LIST OF TABLES xv Chapter 1. Introduction 1 1.1 Background and Motivation 1 1.2 Rotational energy harvester: Transduction 8 1.2.1 Electromagnetic energy harvester (EMEH) 10 1.2.2 Piezoelectric energy harvester (PEH) 13 1.3 Thesis organization 21 Chapter 2. Piezoelectric energy harvester (Base excitation) 23 2.1 Theoretical modeling 23 2.2 Device design and simulation 30 2.3 Fabrication of the piezoelectric energy harvester 36 2.3.1 Fabrication process 36 2.3.2 Aerosol deposition method 37 2.4 Experimental results and discussion 41 2.4.1 Experimental setup 41 2.4.2 Mechanical and electrical behavior 42 2.4.2 Durability test (24-h test) 48 2.5 Equivalent circuit model (base excitation) 51 2.6 Conclusions 57 Chapter 3. Rotational Piezoelectric Energy Harvester (Static Magnetic Plucking) 58 3.1 Theoretical modeling 58 3.1.1 Design and operating principle 58 3.1.2 Magnetic force 59 3.1.3 Equivalent circuit model (magnetic plucking) 62 3.2 Experimental Validation 64 3.2.1 Experimental setup 64 3.2.2 Experimental results and discussion 65 3.2.3 Durability and daily output energy 72 3.2.4 Practical daily output energy 77 3.3 Conclusions 78 Chapter 4. Package Design and Performance Validation (Dynamic Magnetic Plucking) 80 4.1 Design and operating principle 80 4.2 Package design 84 4.3 Experimental results 87 Chapter 5. Conclusions and Future Work 96 5.1 Conclusions 96 5.2 Future work 98 5.2.1 Beam length extension 98 5.2.2 Multiple magnetic excitation 100 5.2.3 Centrifugal force distribution 101 5.3 Publications 109 References 111 | |
| dc.language.iso | en | |
| dc.subject | 升頻率機制 | zh_TW |
| dc.subject | 低頻率轉動 | zh_TW |
| dc.subject | 壓電能量擷取 | zh_TW |
| dc.subject | low-frequency rotation | en |
| dc.subject | piezoelectric energy harvesting | en |
| dc.subject | frequency up-conversion | en |
| dc.title | 應用於低轉速環境之微型壓電能量擷取器 | zh_TW |
| dc.title | Meso-scale piezoelectric energy harvester for low-frequency rotational motion | en |
| dc.date.schoolyear | 110-1 | |
| dc.description.degree | 博士 | |
| dc.contributor.author-orcid | 0000-0002-8324-0864 | |
| dc.contributor.coadvisor | François Costa(François Costa) | |
| dc.contributor.oralexamcommittee | 李世光(Hsin-Tsai Liu),蘇偉儁(Chih-Yang Tseng),林順區,田維誠,François Pigache | |
| dc.subject.keyword | 壓電能量擷取,低頻率轉動,升頻率機制, | zh_TW |
| dc.subject.keyword | piezoelectric energy harvesting,low-frequency rotation,frequency up-conversion, | en |
| dc.relation.page | 115 | |
| dc.identifier.doi | 10.6342/NTU202104470 | |
| dc.rights.note | 同意授權(限校園內公開) | |
| dc.date.accepted | 2021-11-10 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 工程科學及海洋工程學研究所 | zh_TW |
| dc.date.embargo-lift | 2026-11-09 | - |
| 顯示於系所單位： | 工程科學及海洋工程學系 | |
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| U0001-0911202117194600.pdf 未授權公開取用 | 12.83 MB | Adobe PDF | 檢視/開啟 |
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