A 12-μW to 1.1-mW AIM Piezoelectric Energy Harvester for Time-Varying Vibrations With 450-nA $I_{\bm Q}$

Sankman, Joseph; Ma, Dongsheng

doi:10.1109/tpel.2014.2313738

Cited by 65 publications

(28 citation statements)

References 16 publications

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“…Sankman et al presented an industrial application where vibrations at 60 Hz are commonly found, for example from motors, air ducts and have a high power density of up to 375 μW/cm 3 [19].…”

Section: Piezoelectricmentioning

confidence: 99%

Current Developments of Energy Scavenging, Converting and Storing in WSNs

Bhaskar¹,

Champawat²,

Bhaskar³

2015

IJCA

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Wireless sensor networks (WSNs) design requires multidisciplinary approach in the field of wireless communication, embedded systems, networking, digital signal processing, hardware and software engineering. Major factors to influence the WSNs design are hardware and software constraints, scalability, cost, transmission media, network topology and power consumption etc. Most of WSN nodes are battery powered. With the limited capacity of batteries to power WSN nodes, need of energy harvester or scavenger is required to harvest or scavenge energy from the environment to improve the life-time of the sensor node. The harvested or scavenged energy is converted by power converters to recharge the sensor nodes or for the storage devices. This paper gives current developments of energy harvesting technologies, power converters and storage devices proposed by various researchers in WSNs along with some open research problems.

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Section: Piezoelectricmentioning

confidence: 99%

Current Developments of Energy Scavenging, Converting and Storing in WSNs

Bhaskar¹,

Champawat²,

Bhaskar³

2015

IJCA

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“…6,7 However, in practical applications, the load is not a linear impedance because the output voltage of a REVEH needs to be rectified by means of a (nonlinear) AC/DC converter. [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] AC/DC active topologies based on switching converters, when properly controlled, are effectively able to emulate the optimal impedance z OPT and to maximize the REVEH power extraction (similar to the case of active AC/DC topologies for PFC [27][28][29] ). The idea is to practically exploit the theoretical findings of the maximum power transfer theorem (MPTT).…”

Section: Introductionmentioning

confidence: 99%

Power maximization from resonant electromagnetic vibration harvesters feeding bridge rectifiers

Costanzo

Schiavo

Vitelli

2018

Circuit Theory & Apps

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In this paper, it is shown that, for resonant electromagnetic vibration energy harvesters (REVEH) feeding diode bridge rectifiers, it is possible to quantify how close the ideal load condition is to the actual load condition. For this purpose, a new figure of merit, the REVEH exploitation factor (REF), is introduced. The higher the REF, the higher the REVEH exploitation. Moreover, by using the REF, a suitable technique for increasing the extracted power in a frequency region of interest is investigated. This is the frequency region where a significant energy content of the input vibrations is present. The investigated technique is based on the proper insertion of additional non-dissipative components (capacitors or inductors) between the REVEH coil and the bridge rectifier. Experimental results confirm the validity of the theoretical analysis.FIGURE 1 REVEH system employing a bridge rectifier 88 COSTANZO ET AL.

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“…Several rectifier circuits based on piezoelectric transducers have been reported in [1][2][3][4][5][6][7]. The circuits reported in [4][5][6] aim to reduce the voltage drop across rectifier diodes while references [2][3][4][5][6][7][8][9] aim to reduce the wasted charges associated with the charging of the plate capacitance of the piezoelectric transducer to further increase the overall efficiency of the systems. In [1,8,10], the researchers have used techniques called bias-flip and synchronized switch harvesting on inductor (SSHI) to improve the extraction of energy.…”

Section: Introductionmentioning

confidence: 99%

A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications

Islam

Mahfouz

et al. 2017

JLPEA

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Abstract:Piezoelectric vibration based energy harvesting systems have been widely utilized and researched as powering modules for various types of sensor systems due to their ease of integration and relatively high energy density compared to RF, thermal, and electrostatic based energy harvesting systems. In this paper, a low-power CMOS full-bridge rectifier is presented as a potential solution for an efficient energy harvesting system for piezoelectric transducers. The energy harvesting circuit consists of two n-channel MOSFETs (NMOS) and two p-channel MOSFETs (PMOS) devices implementing a full-bridge rectifier coupled with a switch control circuit based on a PMOS device driven by a comparator. With a load of 45 kΩ, the output rectifier voltage and the input piezoelectric transducer voltage are 694 mV and 703 mV, respectably, while the V OUT versus V IN conversion ratio is 98.7% with a PCE of 52.2%. The energy harvesting circuit has been designed using 130 nm standard CMOS process.

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A 12-μW to 1.1-mW AIM Piezoelectric Energy Harvester for Time-Varying Vibrations With 450-nA $I_{\bm Q}$

Cited by 65 publications

References 16 publications

Current Developments of Energy Scavenging, Converting and Storing in WSNs

Current Developments of Energy Scavenging, Converting and Storing in WSNs

Power maximization from resonant electromagnetic vibration harvesters feeding bridge rectifiers

A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications

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