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Improving functionality of vibration energy harvesters using magnets.

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Improving functionality of vibration energy harvesters using magnets.
นักวิจัย : Tang, Lihua , Yang, Yaowen , Soh, Chee Kiong
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Tang, L., Yang, Y., & Soh, C. K. (2012). Improving functionality of vibration energy harvesters using magnets. Journal of Intelligent Material Systems and Structures, 23(13), 1433-1449. , http://hdl.handle.net/10220/12923 , http://dx.doi.org/10.1177/1045389X12443016
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of intelligent material systems and structures
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

In recent years, several strategies have been proposed to improve the functionality of energy harvesters under broadband vibrations, but they only improve the efficiency of energy harvesting under limited conditions. In this work, a comprehensive experimental study is conducted to investigate the use of magnets for improving the functionality of energy harvesters under various vibration scenarios. First, the nonlinearities introduced by magnets are exploited to improve the performance of vibration energy harvesting. Both monostable and bistable configurations are investigated under sinusoidal and random vibrations with various excitation levels. The optimal nonlinear configuration (in terms of distance between magnets) is determined to be near the monostable-to-bistable transition region. Results show that both monostable and bistable nonlinear configurations can significantly outperform the linear harvester near this transition region. Second, for ultra-low-frequency vibration scenarios such as wave heave motions, a frequency up-conversion mechanism using magnets is proposed. By parametric study, the repulsive configuration of magnets is found preferable in the frequency up-conversion technique, which is efficient and insensitive to various wave conditions when the magnets are placed sufficiently close. These findings could serve as useful design guidelines when nonlinearity or frequency up-conversion techniques are employed to improve the functionality of vibration energy harvesters.

บรรณานุกรม :
Tang, Lihua , Yang, Yaowen , Soh, Chee Kiong . (2555). Improving functionality of vibration energy harvesters using magnets..
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Tang, Lihua , Yang, Yaowen , Soh, Chee Kiong . 2555. "Improving functionality of vibration energy harvesters using magnets.".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Tang, Lihua , Yang, Yaowen , Soh, Chee Kiong . "Improving functionality of vibration energy harvesters using magnets.."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Tang, Lihua , Yang, Yaowen , Soh, Chee Kiong . Improving functionality of vibration energy harvesters using magnets.. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.