Frequency Modulation Approach for High Power Density 100 Hz Piezoelectric Vibration Energy Harvester

被引：2

作者：

Ju, Dengfeng ^{[1
,2
]}

Wang, Lu ^{[3
,4
,5
]}

Li, Chunlong ^{[1
,2
]}

Huang, Hui ^{[1
,2
]}

Liu, Hongjing ^{[6
,7
]}

Liu, Kewen ^{[6
,7
]}

Wang, Qian ^{[3
,4
]}

Han, Xiangguang ^{[3
,4
,5
]}

Zhao, Libo ^{[3
,4
,5
]}

Maeda, Ryutaro ^{[3
,4
]}

机构：

[1] State Grid Smart Grid Res Inst Co Ltd, Beijing 102209, Peoples R China

[2] Elect Power Intelligent Sensing Technol & Applicat, Beijing 102209, Peoples R China

[3] Xi An Jiao Tong Univ, Yantai Res Inst Intelligent Sensing Technol & Syst, State Key Lab Mfg Syst Engn, Int Joint Lab Micro Nano Mfg & Measurement Technol, Xian 710049, Peoples R China

[4] Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710049, Peoples R China

[5] Shandong Lab Yantai Adv Mat & Green Mfg, Yantai 265503, Peoples R China

[6] State Grid Beijing Elect Power Res Inst, Beijing 100075, Peoples R China

[7] Stand Verificat Lab Onsite Testing Technol, Beijing 102209, Peoples R China

来源：

SENSORS | 2022年 / 22卷 / 23期

关键词：

resonant frequency; vibration energy harvesting; frequency modulation; magnetic coupling;

D O I：

10.3390/s22239493

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Piezoelectric vibration energy harvester (PVEH) is a promising device for sustainable power supply of wireless sensor nodes (WSNs). PVEH is resonant and generates power under constant frequency vibration excitation of mechanical equipment. However, it cannot output high power through off-resonance if it has frequency offset in manufacturing, assembly and use. To address this issue, this paper designs and optimizes a PVEH to harvest power specifically from grid transformer vibration at 100 Hz with high power density of 5.28 mu Wmm(-3)g(-2). Some resonant frequency modulation methods of PVEH are discussed by theoretical analysis and experiment, such as load impedance, additional mass, glue filling, axial and transverse magnetic force frequency modulation. Finally, efficient energy harvesting of 6.1 V output in 0.0226 g acceleration is tested in grid transformer reactor field application. This research has practical value for the design and optimization process of tunable PVEH for a specific vibration source.

引用

页数：10

共 28 条

[1] Vacuum-Packaged Piezoelectric Energy Harvester for Powering Smart Grid Monitoring Devices [J].