Optimized piezoelectric energy harvesting circuit using step-down converter in discontinuous conduction mode

Ottman, Geffrey; Hofmann, Heath; Lesieutre, George A.

doi:10.1109/tpel.2003.809379

Cited by 575 publications

(368 citation statements)

References 8 publications

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“…The electricity produced is thereafter formatted by a static converter before supplying a storage system or the load. Kotmann & Hoffman et al [24] describes an approach to harvesting electrical energy from a mechanically excited piezoelectric element. By employing the capacitive impedance, mechanical vibration of varying amplitude can be harvested into energy.…”

Section: Mechanical (Vibration) Energy Harvestingmentioning

confidence: 99%

A review of energy harvesting technology and its potential applications

Sil¹,

Mukherjee²,

Biswas³

2017

EESRJ

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In the recent years, obtaining a sustainable form of energy to power various autonomous wireless & portable devices is increasingly becoming a matter of concern & various alternate sources of energy have been explored. The concept of power harvesting works towards developing self-powered devices that do not require replaceable power supplies. This paper discusses energy harvesting or energy scavenging as an efficient approach to cater to the energy needs of portable electronics, review recent advancement in the field of power harvesting & present the current state of power harvesting in its drive to create completely selfpowered devices.

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Section: Mechanical (Vibration) Energy Harvestingmentioning

confidence: 99%

A review of energy harvesting technology and its potential applications

Sil¹,

Mukherjee²,

Biswas³

2017

EESRJ

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“…Piezoelectric transducers can be approximately modeled in the electric domain as an ideal current source in parallel to a parasitic capacitance C P and resistance R P as shown in figure 2 [3]. Generally, R P is very large compared to the impedance of C P and therefore it is neglected.…”

Section: Piezoelectric Harvester Modelmentioning

confidence: 99%

“…The DC-DC converter is used to optimize V RECT and thereby track the maximum power point of each PFIG transducer [3,5]. Operating the buck-boost converter in a discontinuous conduction mode creates the impedance match.…”

Section: Buck-boost Converter and Optimal Power Extractionmentioning

confidence: 99%

“…One of the main tasks of the power management system is to decouple the load from the harvester in order to allow energy transduction to take place in an optimized way regardless of the variable load presented to the system. Both piezoelectric and electromagnetic transducers can be approximated as having a resistive source impedance while in resonance, which means that they will deliver optimal power to a matched resistive load [3]. This is also true in the case of an unforced ring-down, as is the case with PFIG harvesters.…”

Section: Introductionmentioning

confidence: 99%

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A fully autonomous power management interface for frequency up-converting harvesters using load decoupling and inductor sharing

Tom

Oliver

Galchev

2015

J. Phys.: Conf. Ser.

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Abstract. This paper presents the design and simulation results of a self-starting electrical interface circuit for Parametric Frequency Increased Generator (PFIG) vibrational energy harvesters. A significant challenge with these types of harvesters is the ring down of the transducer, introducing an exponential decrease in efficiency when interfaced with standard passive rectifiers. This work aims to address these challenges by interfacing a standard active rectifier to a buck-boost stage in order to decouple the load and always provide an optimal impedance to the transducer. Because PFIG harvesters have two outputs, an inductor sharing technique allows the hardware to be reused. The active buck-boost power management circuit is designed for XFAB's 0.35 m 2P5M CMOS process. It can provide an efficiency between 75% -93% for input voltages in the range of 0.5 -2 V, reaching its maximum efficiency at 1.8 V. The active power consumption of the power converter is 800 nW. The system can start from as low as 800 mV of input voltage and 3 µW of input power.

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“…(10,11) Different piezoelectric materials have been developed in MEMS energy harvesters, such as PZT, (12) AlN, (13) ZnO, (14) PVDF, (15) and PMN-PT (16,17) single-crystal materials. Compared with other materials, the PMN-PT material exhibits outstanding piezoelectric properties that considerably surpass those of PZT ceramics by a factor of 4 to 5.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of d33 Mode (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) Energy Harvester

2014

Sensors and Materials

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Key words: d 33 mode, energy harvester, bonding and grinding, MEMSIn this manuscript, a d 33 mode piezoelectric micro-electromechanical systems (MEMS) energy harvester integrated with silicon proof mass, which is made of composite cantilever beams from a silicon layer and a single crystal PMN-PT thick film, is proposed. The silicon mass is fabricated by the deep-reactive ion etching (DRIE) process to reduce the resonant frequency for a matching ambient source. A PMN-PT film of 15 µm thickness is realized by the hybrid process of wafer bonding and grinding. The experimental results show that this fabricated prototype can generate a maximum output voltage of 1.18 V P-P and corresponding power of 0.139 µW at the resonant frequency of 200 Hz and vibration acceleration of 2 g.

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Optimized piezoelectric energy harvesting circuit using step-down converter in discontinuous conduction mode

Cited by 575 publications

References 8 publications

A review of energy harvesting technology and its potential applications

A review of energy harvesting technology and its potential applications

A fully autonomous power management interface for frequency up-converting harvesters using load decoupling and inductor sharing

Fabrication and Characterization of d33 Mode (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) Energy Harvester

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