Non-Linear Switching Circuit for Active Voltage Rectification and Ripples Reduction of Piezoelectric Energy Harvesters

Mahesh Edla, Yee Yan Lim, Deguchi Mikio and Ricardo Vasquez Padilla
Additional contact information
Mahesh Edla: Faculty of Science and Engineering, Southern Cross University, East Lismore, NSW 2480, Australia
Yee Yan Lim: Faculty of Science and Engineering, Southern Cross University, East Lismore, NSW 2480, Australia
Deguchi Mikio: Department of Electronics and Control Engineering, National Institute of Technology, Niihama College, Niihama 790-8570, Japan
Ricardo Vasquez Padilla: Faculty of Science and Engineering, Southern Cross University, East Lismore, NSW 2480, Australia

Energies, 2022, vol. 15, issue 3, 1-18

Abstract: This paper describes an improved non-linear switching circuit (INLSC) for active rectification of voltage and reduction of ripples in the voltage waveform for the piezoelectric energy harvesting (PEH) system. The proposed converter controls the alternating current (AC) generated by the piezoelectric device (PD) under mechanical vibration. The proposed circuit combines the boost and buck-boost processes through a switching process, which functions in both positive and negative cycles. In addition, it controls the voltage and frequency of the load capacitor. In this process, the passive components in the circuit are energised by being short with the AC voltage using switching signals, which facilitates the active rectification of ultra-low AC voltage. Design considerations, theoretical analysis, simulations and experimental results are presented. It was shown that the circuit was able to control the switching signal and to convert low AC voltage (0.44 V i ) to high direct current (DC) voltage (6.5 V dc ) while achieving an output power of 469 µW which outperforms the existing similar circuits and synchronous rectifier circuit. The ripples in the rectified voltage were also comparatively less. Application-wise, the proposed circuit could power a manually connected 7-segments display, commonly used for traffic applications.

Keywords: AC-DC conversion; boost; buck-boost; switching circuit; 7-segment display; piezoelectric devices; rectifier-less circuit; synchronous rectifier circuit (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/3/709/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/3/709/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:3:p:709-:d:728067

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().