Integrable High-Efficiency AC-DC Converter for Piezoelectric Energy Scavenging System

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

doi:10.1109/portable.2007.61

Cited by 12 publications

(9 citation statements)

References 15 publications

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“…Full-bridge rectifiers [7], [8] and voltage doublers [5], [9] are commonly used as rectifier circuits to convert the AC output of a piezoelectric harvester into a DC voltage. Typical implementation of these rectifier circuits is shown in Fig.…”

Section: A Full-bridge Rectifiers and Voltage Doublersmentioning

confidence: 99%

“…This reduces the magnitude of the flipped voltage and hence reduces the overall power output. The amount of power reduction can be found by including this additional resistance to the value of in (9). The other issue with inductor sharing is that there may be a delay of up to 4 s from the time the bias-flip rectifier requests the inductor till when it is granted access.…”

Section: A Effect Of Inductor Sharing On System Performancementioning

confidence: 99%

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An Efficient Piezoelectric Energy Harvesting Interface Circuit Using a Bias-Flip Rectifier and Shared Inductor

Ramadass

Chandrakasan

2010

IEEE J. Solid-State Circuits

500

236

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Abstract-Harvesting ambient vibration energy through piezoelectric means is a popular energy harvesting technique which can potentially supply 10-100's of W of available power. One of the main limitations of existing piezoelectric harvesters is in their interface circuitry. In this paper, a bias-flip rectifier circuit that can improve the power extraction capability from piezoelectric harvesters over conventional full-bridge rectifiers and voltage doublers by greater than 4X is implemented in a 0.35 m CMOS process. An efficient control circuit to regulate the output voltage of the rectifier and recharge a storage capacitor is presented. The inductor used within the bias-flip rectifier is shared efficiently with a multitude of switching DC-DC converters within the system reducing the overall component count.Index Terms-Bias-flip rectifier, DC-DC converter, full-bridge rectifier, inductor sharing, micropower, piezoelectric harvester.

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Section: A Full-bridge Rectifiers and Voltage Doublersmentioning

confidence: 99%

Section: A Effect Of Inductor Sharing On System Performancementioning

confidence: 99%

An Efficient Piezoelectric Energy Harvesting Interface Circuit Using a Bias-Flip Rectifier and Shared Inductor

Ramadass

Chandrakasan

2010

IEEE J. Solid-State Circuits

500

236

View full text Add to dashboard Cite

show abstract

“…Figure 2a shows the active topology of the ac-dc converter that uses comparators CMP1 and CMP2 to drive switches S1 and S2. The comparators sense the drain to source voltages of the two MOSFETs and properly turn them on or off [11]. This is the most straightforward way to implement an active version of the voltage doubler converter, since the switches and their driving emulate some ideal diode with a very low, almost zero, forward voltage drop, but the design of the two comparators is critical because a very accurate choice of the threshold voltages is required.…”

Section: Design Of the Proposed Front-end Circuitries: Common Partsmentioning

confidence: 99%

“…1). Of course the active circuitry comes at the price of using a part of the harvested energy to supply the active circuitry itself: active converters can be more efficient than passive solution [3][4], [11], but they are more difficult to be designed because their whole power consumption has to be very low.…”

Section: Introductionmentioning

confidence: 99%

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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“…Standard full-bridge rectifiers (Jeon et al, 2005;Ottman et al, 2002) and voltage doublers (Dallago et al, 2007;Le et al, 2006) are the most common rectifier circuits reported in energy harvesting review but the main source of power losses are typically the diodes forward drops. Alternatively, voltage multiplier rectification is possible because of its capability to produce higher DC voltage.…”

Section: Introductionmentioning

confidence: 99%

Low Frequency Electromagnetic Structural Vibration Energy Harvester to Power up Wireless Sensor Node

Alisah¹,

Hairudin²,

Chan³

et al. 2017

IJSRK

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Abstract. This paper presents the development of a low frequency vibration energy harvester based on the electromagnetic principle integrated with low threshold voltage diode multiplier circuitry. The harvester is designed to be modular and scalable based on a single electromagnetic generator. In this design four individual generators are arranged in series. The dimension of the device is 75mm x 140mm x140mm. Experimental results showed that a peak open circuit voltage of 1.6 V at 10 Hz and 0.8 g. Maximum power of 0.45 mW were extracted by the converter at resistive load of 5 kΩ. The power/acceleration density of the harvester is 600 μW/gcm 3 , which is the highest for any vibration energy harvester based on the electromagnetic principles reported.

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Integrable High-Efficiency AC-DC Converter for Piezoelectric Energy Scavenging System

Cited by 12 publications

References 15 publications

An Efficient Piezoelectric Energy Harvesting Interface Circuit Using a Bias-Flip Rectifier and Shared Inductor

An Efficient Piezoelectric Energy Harvesting Interface Circuit Using a Bias-Flip Rectifier and Shared Inductor

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

Low Frequency Electromagnetic Structural Vibration Energy Harvester to Power up Wireless Sensor Node

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