Effects of coupling in piezoelectric multi-beam structure

Anand, Ashutosh; Naval, Sourav; Sinha, Prasun; Das, Nikhil Kumar; Kundu, Sudip

doi:10.1007/s00542-019-04653-3

Cited by 12 publications

(1 citation statement)

References 29 publications

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“…Therefore, the SSHI circuit is tested for the variation in the C p values. The variation in the magnitude of input vibration gets reflected in the form of amplitude variation in the current i p [24]. The circuit is tested for the 50% variation in the magnitude of i p keeping f p constant.…”

Section: Circuit Robustnessmentioning

confidence: 99%

Robust vibration invariant SSHI rectifier circuit for piezoelectric device

Singh

Pal

Kundu

2021

Analog Integr Circ Sig Process

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Rectifier is the most critical block of the power conditioning circuit designed for the Piezoelectric Energy Harvester (PZEH). Maintaining high rectification efficiency under the variable ambient conditions is the major design challenge. This paper presents a novel topology of self tuned Synchronized Switch Harvesting on Inductor (SSHI) based rectifier circuit for PZEH which provides high power extraction efficiency over a wide range of frequency and magnitude of input vibrations available. The high rectification efficiency is maintained for different PZ devices also. The synchronization of SSHI block under different ambient conditions is achieved by an adaptively controlled pulse generator circuit which uses internal voltage sensing. An active diode circuit to reduce the conduction loss in SSHI block and forward voltage drop of rectifier is used. The proposed circuit is working from 100 to 350 Hz with flipping efficiency above 90% and power extraction efficiency around 50%. A maximum power conversion efficiency of 58 % and maximum flipping efficiency of 93.6% is obtained with a figure of merit of 467% and output power of 72:6 lW.

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Section: Circuit Robustnessmentioning

confidence: 99%