Efficient self-powered piezoelectric energy harvesting interface circuit with wide rectified voltage

被引:4
作者
Wang, Jiahuan [1 ]
Xia, Yinshui [1 ]
Shen, Jiahui [1 ]
Wang, Xiudeng [1 ]
机构
[1] Ningbo Univ, Fac Elect Engn & Comp Sci, Ningbo, Peoples R China
来源
MICROELECTRONICS JOURNAL | 2022年 / 126卷
关键词
Energy harvesting; Self-powered; SECE; SSHI; SSHI;
D O I
10.1016/j.mejo.2022.105474
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Synchronized Switching Harvesting on Inductor (SSHI) and Synchronous Electric Charge Extraction (SECE) are two classic interface circuit techniques for Piezoelectric energy harvesting. But the former has high peak output power with narrow rectified voltage range, while the latter has wide rectified voltage range with lower peak output power. This paper presents a self-powered interface circuit for piezoelectric energy harvesting to achieve a good balance between the two. The proposed interface circuit is based on the Series-SSHI (S-SSHI) and SECE. The circuit proposed can harvest energy through S-SSHI and SECE in positive and negative half cycles, respectively. Moreover, the figure of merit (FOM), optimal rectified voltage range (ORVR) and region of interest (S-RoI) of simulation and experiment results are discussed. The maximum FOM of the proposed circuit is as high as 2.15, which is 1.68 times that of the SECE, and it can reach 6 times the ORVR of the S-SSHI. S-RoI factor of the proposed circuit show that the proposed method has better performance. In addition, the circuit shows a simpler implementation compared with state-of-the-art designs.
引用
收藏
页数:10
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