可發電之慣質式調諧質量阻尼器於建築物之應用與最佳化

The Application and Optimization of Energy Harvesting-enable Tuned Mass-Damper-Inerter of buidings

洪書群(Shu-Chun Hung)

指導教授 ： 蘇偉儁

國立臺灣大學/工學院/機械工程學研究所/碩士(2021年)

https://doi.org/10.6342/NTU202102336

摘要

可發電之慣質式調諧質量阻尼器(EH-TMDI)可有效減少建築物受到風力、地震所造成的振動，並將其吸收的振動能轉為電能。增加慣質可以使系統之抑振表現更好，但同時也會降低其發電表現，本研究稱上述現象為”互斥”現象。為了解決此現象，本研究定義加權指標，其值為抑振與發電此兩性能指標加權後相加，並透過改變權重針對此加權指標進行最佳化分析。研究結果發現當調諧質量增加時，透過改變權重可使系統發電表現提升，且其幅度大於加入慣質使系統發電表現下降的幅度；另一方面改變權重會減損系統之抑振表現，但其幅度小於加入慣質使系統抑振表現提升的幅度，因此可藉由改變指標間的權重改善加入慣質後產生的互斥現象。另外，本研究改變了系統中機械元件的連接方式，提出了三種不同配置的EH-TMDI，分別為B1(能量採集器與慣質串聯)、B2(能量採集器與慣質並聯於主結構與調諧質量間)及B3(能量採集器與慣質並聯於調諧質量與零點之間)。B1為利用上述最佳化分析方法進行研究。研究結果發現不同配置下的EH-TMDI，加入慣質與改變指標間的權重對其抑振與發電指標造成的影響不盡相同。文末，進一步比較本研究提出的EH-TMDI配置(B1、B2及B3)與傳統EH-TMDI(B0配置)兩者之間抑振與發電表現的優劣，並提出不同設計條件下最佳的EH-TMDI配置。

關鍵字

可發電之慣質式調諧質量阻尼器 ； 能量採集 ； 慣質 ； 抑振

並列摘要

Energy Harvesting Tuned Mass-Damper-Inerter(EH-TMDI) can effectively reduce the vibration of buildings caused by wind load and earthquake and convert the absorbed vibration energy into electric energy. The inerter can improve the vibration suppression performance of dampers, but also reduce its power generation performance, which is called "trade-off" phenomenon in this study. In order to solve this problem, the performance indexes of vibration suppression and power generation are weighted and their weights are changed for optimization analysis. The study discovered that with bigger tuned mass, system power generation performance improvement caused by weight variation is more significant than the performance reduction effect of additional inerter, on the other hand the vibration suppression performance loss caused by weight variation is less than vibration suppression performance improvement of additional inerter. Thus, the "trade-off" phenomenon between the performance of power generation and vibration suppression can be improved by changing the weight of the index. In addition, this study changes the connection of the mechanical elements in the system, and proposes three different configurations of EH-TMDI named B1(the energy harvester and the inerter are in series), B2(the energy harvester and the inerter are in parallel between the main structure and the tuned mass) and B3(the energy harvester and the inerter are in parallel between the tuned mass and ground).. The optimization analysis method mentioned above was used in these three configurations. The analysis result show that the effects of additional inerter and weight variation are different under different configurations. At the end of the paper, the EH-TMDI configuration (B1, B2 and B3) proposed in this study was further compared with the traditional EH-TMDI(B0) in terms of vibration suppression and power generation performance, and the optimal EH-TMDI configuration under different design conditions was proposed.

並列關鍵字

Energy Harvesting Tuned Mass-Damper-Inerter ； Energy harvesting ； Inerter ； Vibration suppression

參考文獻

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