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All-in-One High-Power-Density Vibrational Energy Harvester with Impact-Induced Frequency Broadening Mechanisms
Micromachines ( IF 3.4 ) Pub Date : 2021-09-08 , DOI: 10.3390/mi12091083 Yongqi Cao 1, 2 , Weihe Shen 3 , Fangzhi Li 1 , Huan Qi 4 , Jiaxiang Wang 1 , Jianren Mao 3 , Yang Yang 2 , Kai Tao 1, 2
Micromachines ( IF 3.4 ) Pub Date : 2021-09-08 , DOI: 10.3390/mi12091083 Yongqi Cao 1, 2 , Weihe Shen 3 , Fangzhi Li 1 , Huan Qi 4 , Jiaxiang Wang 1 , Jianren Mao 3 , Yang Yang 2 , Kai Tao 1, 2
Affiliation
This paper proposes an electrostatic-piezoelectric-electromagnetic hybrid vibrational power generator with different frequency broadening schemes. Both the nonlinear frequency broadening mechanisms and the synergized effect of the electrostatic-piezoelectric-electromagnetic hybrid structures are investigated. The structure and performance of the composite generator are optimized to improve the response bandwidth and performance. We propose that the electrostatic power generation module and the electromagnetic power generation module be introduced into the cantilever beam to make the multifunctional cantilever beam, realizing small integrated output loss, high output voltage, and high current characteristics. When the external load of the electrostatic power generation module is 10 kΩ, its peak power can reach 3.6 mW; when the external load of the piezoelectric power generation module is 2 kΩ, its peak power is 2.2 mW; and when the external load of the electromagnetic power generation module is 170 Ω, its peak power is 0.735 mW. This means that under the same space utilization, the performance is improved by 90%. Moreover, an energy management circuit (ECM) at the rear end of the device is added, through the energy conditioning circuit, the device can directly export a 3.3 V DC voltage to supply power to most of the sensing equipment. In this paper, the hybrid generator’s structure and performance are optimized, and the response bandwidth and performance are improved. In general, the primary advantages of the device in this paper are its larger bandwidth and enhanced performance.
中文翻译:
具有冲击诱导频率展宽机制的一体化高功率密度振动能量采集器
本文提出了一种具有不同展频方案的静电-压电-电磁混合振动发电机。研究了静电-压电-电磁混合结构的非线性扩频机制和协同效应。对复合发生器的结构和性能进行了优化,提高了响应带宽和性能。我们提出将静电发电模块和电磁发电模块引入悬臂梁中,制成多功能悬臂梁,实现综合输出损耗小、输出电压高、电流大的特性。当静电发电模块的外部负载为10 kΩ时,其峰值功率可达3.6 mW;当压电发电模块外接负载为2kΩ时,其峰值功率为2.2mW;当电磁发电模块的外部负载为170Ω时,其峰值功率为0.735mW。这意味着在相同的空间利用率下,性能提升了90%。而且,在器件后端增加了能量管理电路(ECM),通过能量调节电路,器件可以直接输出3.3 V直流电压,为大部分传感设备供电。本文对混合发电机的结构和性能进行了优化,提高了响应带宽和性能。总的来说,本文设备的主要优点是其更大的带宽和增强的性能。
更新日期:2021-09-08
中文翻译:
具有冲击诱导频率展宽机制的一体化高功率密度振动能量采集器
本文提出了一种具有不同展频方案的静电-压电-电磁混合振动发电机。研究了静电-压电-电磁混合结构的非线性扩频机制和协同效应。对复合发生器的结构和性能进行了优化,提高了响应带宽和性能。我们提出将静电发电模块和电磁发电模块引入悬臂梁中,制成多功能悬臂梁,实现综合输出损耗小、输出电压高、电流大的特性。当静电发电模块的外部负载为10 kΩ时,其峰值功率可达3.6 mW;当压电发电模块外接负载为2kΩ时,其峰值功率为2.2mW;当电磁发电模块的外部负载为170Ω时,其峰值功率为0.735mW。这意味着在相同的空间利用率下,性能提升了90%。而且,在器件后端增加了能量管理电路(ECM),通过能量调节电路,器件可以直接输出3.3 V直流电压,为大部分传感设备供电。本文对混合发电机的结构和性能进行了优化,提高了响应带宽和性能。总的来说,本文设备的主要优点是其更大的带宽和增强的性能。