کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6953852 | 1451824 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of electrical loads containing non-resistive components on piezoelectric energy harvesting
ترجمه فارسی عنوان
اثر بارهای الکتریکی حاوی اجزای غیر مقاومت در مصرف انرژی پیزوالکتریک
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
پردازش سیگنال
چکیده انگلیسی
This study investigates the fundamental effects of electrical loads containing non-resistive components (e.g., rectifiers and capacitors) on piezoelectric energy harvesting performance. Theoretical, numerical and experimental studies have been carried out to investigate three types of electrical loads, namely (I) a rectifier followed by a resistor, (II) a rectifier followed by a regulating capacitor and a resistor, and (III) a simple charging circuit consisting of a rectifier and a capacitor. It is shown that device performance based on pure-resistive loads cannot be generalized to applications involving non-resistive components, i.e., rectifiers and capacitors. Results from cases (I) and (II) show that the rectifier voltage drop leads to a decrease in the power delivered to the load resistance and to an increase in the natural frequency of the device but does not change the optimal resistance corresponding to a driving frequency. The regulating capacitor, however, results in increases in both the optimal load resistance and the natural frequency of the device. Therefore, tuning the natural frequency of a piezoelectric device is possible through an adjustable regulating capacitor with an appropriate rectifier. From case (III), it has been found that a larger storing capacitor, with a low rectifier voltage drop, improves the piezoelectric energy harvesting performance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanical Systems and Signal Processing - Volume 111, October 2018, Pages 210-221
Journal: Mechanical Systems and Signal Processing - Volume 111, October 2018, Pages 210-221
نویسندگان
Hui Zhang, Lawrence R. Corr, Tianwei Ma,