A Self-Powered High-Efficiency Rectifier With Automatic Resetting of Transducer Capacitance in Piezoelectric Energy Harvesting Systems

2015 ◽  
Vol 23 (3) ◽  
pp. 444-453 ◽  
Author(s):  
Xuan-Dien Do ◽  
Huy-Hieu Nguyen ◽  
Seok-Kyun Han ◽  
Dong Sam Ha ◽  
Sang-Gug Lee
Keyword(s):  
Energy Harvesting ◽  
High Efficiency ◽  
Piezoelectric Energy Harvesting ◽  
Piezoelectric Energy ◽  
Harvesting Systems ◽  
Self Powered

A High Efficiency Self-Powered Rectifier for Piezoelectric Energy Harvesting Systems

2016 ◽  
Vol 25 (12) ◽  
pp. 1650164 ◽  
Author(s):  
Jingmin Wang ◽  
Zheng Yang ◽  
Zhangming Zhu ◽  
Yintang Yang
Keyword(s):  
Energy Harvesting ◽  
Power Efficiency ◽  
High Efficiency ◽  
Supply Voltage ◽  
Voltage Drop ◽  
Current Source ◽  
Power Extraction ◽  
Piezoelectric Energy ◽  
Harvesting Systems ◽  
Self Powered

A high efficiency self-powered rectifier for piezoelectric (PE) energy harvesting systems is proposed. The rectifier in this paper increases the harvested power from the PE transducer by using two switches to reset the transducer capacitor when appropriate. The control circuit for the proposed rectifier is simple and does not require an external supply voltage. Furthermore, the passive diode of the conventional full-bridge (FB) rectifier is replaced by active diode to reduce the voltage drop along the conduction path and thereby increases the power extraction and conversion capability. Based on SMIC 0.18[Formula: see text][Formula: see text]m standard CMOS technology, the simulation results show the voltage conversion efficiency can reach up to 98.9% and the maximum power efficiency is 93.1% when the input current source [Formula: see text]A in parallel with internal capacitor [Formula: see text][Formula: see text]nF and internal resistor [Formula: see text][Formula: see text]M[Formula: see text].

scholarly journals Piezoelectric Impact Energy Harvester Based on the Composite Spherical Particle Chain for Self-Powered Sensors

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 3151
Author(s):  
Shuo Yang ◽  
Bin Wu ◽  
Xiucheng Liu ◽  
Mingzhi Li ◽  
Heying Wang ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Spherical Particle ◽  
Impact Energy ◽  
Energy Harvester ◽  
Composite Particle ◽  
Piezoelectric Energy Harvesting ◽  
Particle Chain ◽  
Piezoelectric Energy ◽  
Self Powered ◽  
Particle Chains

In this study, a novel piezoelectric energy harvester (PEH) based on the array composite spherical particle chain was constructed and explored in detail through simulation and experimental verification. The power test of the PEH based on array composite particle chains in the self-powered system was realized. Firstly, the model of PEH based on the composite spherical particle chain was constructed to theoretically realize the collection, transformation, and storage of impact energy, and the advantages of a composite particle chain in the field of piezoelectric energy harvesting were verified. Secondly, an experimental system was established to test the performance of the PEH, including the stability of the system under a continuous impact load, the power adjustment under different resistances, and the influence of the number of particle chains on the energy harvesting efficiency. Finally, a self-powered supply system was established with the PEH composed of three composite particle chains to realize the power supply of the microelectronic components. This paper presents a method of collecting impact energy based on particle chain structure, and lays an experimental foundation for the application of a composite particle chain in the field of piezoelectric energy harvesting.

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