Self-Powered SSDCI Array Interface for Multiple Piezoelectric Energy Harvesters

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16 Scopus Citations
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Original languageEnglish
Pages (from-to)9093-9104
Journal / PublicationIEEE Transactions on Power Electronics
Issue number8
Online published8 Jan 2021
Publication statusPublished - Aug 2021


To merge the gap between the low-power output of Piezoelectric Energy Harvesters (PEHs) and the high-power demand of sensors of Internet of Things (IoTs), researchers recently start to explore PEHs arrays. However, few circuits have been developed to manage the multiple AC inputs from PEHs arrays. This paper presents a self-powered PEH array interface circuit based on the SSDCI (synchronized switching and discharging to a storage capacitor through an inductor) technique. The array interface can output a maximum total power greater than the sum of each individual peak power, and achieve a high efficiency when multiple PEHs connect to the SSDCI array circuit. Simulation and experiment are performed to demonstrate the advantages of the SSDCI array interface. The tested results show the designed SSDCI array circuit achieves an efficiency of 82.3% with three input sources, and allows a gain up to 300% in terms of maximal output power compared to the full-bridge rectifier. In addition, only the peak detection is utilized for the switching control, therefore the SSDCI array circuit is realized more easily and with fewer components compared to the existing SECE (synchronous electric charge extraction) array interfaces.

Research Area(s)

  • Control systems, Detectors, Energy harvesting, Internet of Things, Internet of Things (IoT), low-power circuit, Power generation, Rectifiers, SECE, SSHI, Switches, Switching circuits, Vibration