کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7161852 | 1462856 | 2015 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Design and experiment of a human-limb driven, frequency up-converted electromagnetic energy harvester
ترجمه فارسی عنوان
طراحی و آزمایش یک برداشت کننده انرژی الکترومغناطیسی با فرکانس بالا تبدیل شده به انسان، اندام و حرکت
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کلمات کلیدی
غیر رزونانس، فرکانس بالا تبدیل، اسپری اسپری بهار، حرکت اندام انسان، ارزیاب انرژی الکترومغناطیسی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
چکیده انگلیسی
We present a frequency up-converted electromagnetic energy harvester that generates significant power from human-limb motion (hand-shaking). Because the power generated by a vibration energy harvester is proportional to the operating frequency, the proposed energy harvester has been designed to up-convert the applied low-frequency vibration to a high-frequency vibration by mechanical impact. Upon excitation, a freely moveable ball (non-magnetic) within a cylindrical structure periodically hits two magnets suspended on two helical compression springs located at either ends of the cylinder, allowing these to vibrate with higher frequencies. The relative motion between the magnets and coils (wrapped around the outside of the cylinder) induces e.m.f. (voltage). High-frequency oscillators have been designed through the design parameters (i.e., frequency, spring stiffness, mechanical, and electrical damping), to minimize the power loss. A prototype was fabricated and tested both using a vibration exciter and by manual hand-shaking. The fabricated device showed non-resonant behavior during the vibration exciter test. At optimum load condition, the frequency up-converted generators (FUGs) delivered 0.84Â mW and 0.96Â mW of average power. A maximum 2.15Â mW of average power was obtained from the device with series connected FUGs while it was mounted on a smart phone and was hand-shaken. The fabricated device exhibited 0.33Â mWÂ cmâ3 of average power density, which is very high compared to the current state-of-the-art devices, indicating its ability in powering portable and wearable smart devices from extremely low frequency (â¼5Â Hz) vibration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 106, December 2015, Pages 393-404
Journal: Energy Conversion and Management - Volume 106, December 2015, Pages 393-404
نویسندگان
Miah A. Halim, Hyunok Cho, Jae Y. Park,