Self-Supplied Integrable Active High-Efficiency AC-DC Converter for Piezoelectric Energy Scavenging Systems

Dallago, E.; Miatton, D.; Venchi, G.; Frattini, Giovanni; Ricotti, G.

doi:10.1109/iscas.2007.378832

Cited by 23 publications

(28 citation statements)

References 11 publications

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“…Fig. 1(a) shows the proposed rectifier, in which two switches, MP 3 and MP 4 , are added to the two cross-coupled pMOS diodes in parallel. The PE transducer in the figure is modeled as a current source i P (t) = I P sin(2πf P t), in which I P = 125 uA, in parallel with a capacitor C P = 125 µF, and resistor R P = 1 MΩ [1].…”

Section: Proposed Rectifiermentioning

confidence: 99%

“…When the transducer current crosses zero to be negative, MP 1 is turned off, and control voltage V G2 drops from high to low to turn off MN 2 . The change of V G2 leads to the gate voltage φ S to be zero momentarily to conduct MP 3 and MP 4 . For the source current, the maximum extracted power of the proposed SS rectifier with synchronized switching and that of the one without a synchronized switching scheme (i.e., Lam Rectifier) are obtained as follows for ideal components [1,3]: 2 max, rectifier_ SS 2…”

Section: Proposed Rectifiermentioning

confidence: 99%

“…Various configurations of active diodes were investigated to reduce power dissipation of passive diodes, and a rectifier based on cross-coupled PMOS transistor and comparators in [5] achieves high efficiency. To extract maximum power from the capacitive source of a PE transducer, two nonlinear approaches were investigated [1][2][3][4][5]. The first approach is to discharge the capacitor with a switch when the PE transducer current changes its direction from positive to negative or vice versa [1,2,4,10].…”

Section: Introductionmentioning

confidence: 99%

“…To extract maximum power from the capacitive source of a PE transducer, two nonlinear approaches were investigated [1][2][3][4][5]. The first approach is to discharge the capacitor with a switch when the PE transducer current changes its direction from positive to negative or vice versa [1,2,4,10]. The approach called synchronized switch (SS) shortens the time period to charge the capacitor, but fails to harvest the energy stored in the capacitor prior to the zero-crossing point of the current.…”

Section: Introductionmentioning

confidence: 99%

“…The approach called synchronized switch (SS) shortens the time period to charge the capacitor, but fails to harvest the energy stored in the capacitor prior to the zero-crossing point of the current. The SS rectifiers reported in [1,4] short the two terminals of the transducer directly with a switch(es). The method requires complex circuitry to detect the zero-crossing point and two external supply voltages.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

A Piezoelectric Energy Harvester with High Efficiency and Low Circuit Complexity

Do¹,

Nguyen²,

Han³

et al. 2015

JSTS:Journal of Semiconductor Technology and Science

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Abstract-This paper presents an efficient vibration energy harvester with a piezoelectric (PE) cantilever. The proposed PE energy harvester increases the efficiency through minimization of hardware complexity and hence reduction of power dissipation of the circuit. Two key features of the proposed energy harvester are (i) incorporation synchronized switches with a simple control circuit, and (ii) a feedforward buck converter with a simple control circuit. The chip was fabricated in 0.18 µm CMOS processing technology, and the measured results indicate that the proposed rectifier achieves the efficiency of 77%. The core area of the chip is 0.2 mm2.Index Terms-Active rectifier, feed-forward buck converter, high efficiency rectifier, piezoelectric energy harvester, synchronized switch rectifier.

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Section: Proposed Rectifiermentioning

confidence: 99%

Section: Proposed Rectifiermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Piezoelectric Energy Harvester with High Efficiency and Low Circuit Complexity

Do¹,

Nguyen²,

Han³

et al. 2015

JSTS:Journal of Semiconductor Technology and Science

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Comparison of Two Autonomous AC-DC Converters for Piezoelectric Energy Scavenging Systems

Dallago¹,

Miatton²,

Venchi³

et al. 2010

IFIP Advances in Information and Communication Technology

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Abstract. Piezoelectric Energy Scavenging Systems (PESS) are used to convert the energy of mechanical vibrations into electrical energy exploiting the piezoelectric effect. Their output is a voltage which strongly varies in time; to obtain a suitable supply source an AC-DC conversion of the output voltage of these transducers is needed. Since the output power level of the energy transducer can be very low, the conversion should be as efficient as possible.The paper describes an active AC-DC converter, based on the voltage doubler topology, in which two different driving circuitries have been implemented.The proposed solutions are fully autonomous, i.e. they are supplied by the energy that they harvest. To reduce and to optimize their power consumption a bias circuit has been designed to make the total bias current supply independent.A test chip has been diffused using STMicroelectronics 5V CMOS technology. The performances of the two solutions were compared with the ones of a passive Schottky based voltage doubler. The figures of merit were the average power supplied by the piezoelectric transducer and the average power delivered on a load resistance. Furthermore, the significance of such parameters is also discussed, and a more general figure of merit is defined with the advantage of also weighting the ability of the converter to harvest all the power available at the transducer terminals.

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Impact of Stress Concentrated Region on MEMS-Based Piezoelectric Energy Harvester

Talam,

Begum,

Chakravarthi

et al. 2023

Lecture Notes in Electrical Engineering

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Self-Supplied Integrable Active High-Efficiency AC-DC Converter for Piezoelectric Energy Scavenging Systems

Cited by 23 publications

References 11 publications

A Piezoelectric Energy Harvester with High Efficiency and Low Circuit Complexity

A Piezoelectric Energy Harvester with High Efficiency and Low Circuit Complexity

Comparison of Two Autonomous AC-DC Converters for Piezoelectric Energy Scavenging Systems

Impact of Stress Concentrated Region on MEMS-Based Piezoelectric Energy Harvester

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