A Wideband Electromagnetic Micro Power Generator for Wireless Microsystems

Sari, Ibrahim; Balkan, Tuna; Külah, Haluk

doi:10.1109/sensor.2007.4300122

Cited by 31 publications

(19 citation statements)

References 5 publications

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“…If a similar analysis is conducted and each term in (4) is integrated over a cycle, the result is the same as that in (3). Note that the integrals involving the mass and the stiffness vanish since the net change in the kinetic and potential energies of the system over one period of motion are zero.…”

Section: Available Power From a Non-linear Devicementioning

confidence: 97%

“…The performance of the resonant generator drops off rapidly if mistuned. Sari et al [3] have developed a wide-band micro power generator in order to overcome this limitation by employing a series of cantilevers with various lengths and resonance frequencies, which is suitable for high frequency applications . In addition, the power harvested by a resonant device is proportional to the cube of the excitation frequency [1], which then limits the performance of the resonant generator even more at low frequencies.…”

Section: Introductionmentioning

confidence: 99%

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Potential benefits of a non-linear stiffness in an energy harvesting device

et al. 2009

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The benefits of using a non-linear stiffness in an energy harvesting device comprising a mass-spring-damper system are investigated. Analysis based on the principle of conservation of energy reveals a fundamental limit of the effectiveness of any non-linear device over a tuned linear device for such an application. Two types of non-linear stiffness are considered. The first system has a non-linear bi-stable snap-through mechanism. This mechanism has the effect of steepening the displacement response of the mass as a function of time, resulting in a higher velocity for a given input excitation. Numerical results show that more power is harvested by the mechanism if the excitation frequency is much less than the natural frequency. The other non-linear system studied has a hardening spring, which has the effect of shifting the resonance frequency. Numerical and analytical studies show that the device with a hardening spring has a larger bandwidth over which the power can be harvested due to the shift in the resonance frequency.

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Section: Available Power From a Non-linear Devicementioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Potential benefits of a non-linear stiffness in an energy harvesting device

et al. 2009

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“…Although researchers have addressed this by adopting mechanical up-converters [126] or wide-band mechanical resonator arrays [127], these devices still require vacuum packaging and controlled-frequency excitation. Airflow is ever present in nature and is also regarded as an environment-friendly energy source.…”

Section: Electromagnetic Energy Scavengermentioning

confidence: 99%

Micro/nanofluidics-enabled energy conversion and its implemented devices

Yang

Liu

2010

Front. Energy Power Eng. China

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Most people were not aware of the role of energy as a basic force that drives the development and economic growth of the world until the two great oil crises occurred. According to the conservation law, energy not only exists in various forms but is also capable of being converted from one form to another. The common forms of energy are mechanical energy, chemical energy, internal energy, electrical energy, atomic energy, and electromagnetic energy, among others. The fluids in nature serve as the most common carriers and media in the energy conversion process. Following the rapid development of microelectromechanical systems (MEMS) technology, the energy supply and conversion issue in micro/nano scale has also been introduced in research laboratories worldwide. With unremitting efforts, great quantities of micro/ nano scale energy devices have been investigated. Micro/ nanofluid shows distinct features in transporting and converting energy similar to their counterpart macroscale tasks. In this paper, a series of micro/nanofluid-enabled energy conversion devices is reviewed based on the transformation between different forms of energy. The evaluation and contradistinction of their performances are also examined. The role of micro/nanofluid as media in micro/nano energy devices is summarized. This contributes to the establishment of a comprehensive and systematic structure in the relationship between energy conversion and fluid in the micro/nano scale. Some fundamental and practical issues are outlined, and the prospects in this challenging area are explored.

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“…Methods have been developed to increase operational frequency range of vibration energy harvesting [3] including tuning the resonant frequency of a linear energy harvester [4], using generator array [5], Duffing's nonlinear structures [6] and bistable structures [7]. Tuning the resonant frequency of linear energy harvesters to match the ambient vibration frequency requires energy to be accumulated for the tuning operation and therefore is not suitable for applications where vibration frequency changes rapidly.…”

Section: Introductionmentioning

confidence: 99%

A coupled bistable structure for broadband vibration energy harvesting

Zhu

Beeby

2013

2013 Transducers &Amp; Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems

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This paper investigates a coupled bistable structure for broadband vibration energy harvesting. The coupled bistable structure consists of two cantilevers with a repelling force between them. By comparing with both conventional bistable and linear structures, it was found that the coupled bistable structure requires lower excitation force to trigger bistable operation than conventional bistable structures. Vibration energy harvesters with coupled bistable structures will have potentially more output power under white noise vibrations, especially low level of vibrations, than both conventional bistable and linear energy harvesters. KEYWORDSBroadband vibration energy harvesting, coupled bistable structure.

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A Wideband Electromagnetic Micro Power Generator for Wireless Microsystems

Cited by 31 publications

References 5 publications

Potential benefits of a non-linear stiffness in an energy harvesting device

Potential benefits of a non-linear stiffness in an energy harvesting device

Micro/nanofluidics-enabled energy conversion and its implemented devices

A coupled bistable structure for broadband vibration energy harvesting

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