An AA-Sized Vibration-Based Microgenerator for Wireless Sensors

Yuen, Sze-Kit; Lee, J.M.H.; Li, Wen J.; Leong, Philip H. W.

doi:10.1109/mprv.2007.4

Cited by 58 publications

(19 citation statements)

References 4 publications

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“…The higher the incident light power is, the higher the repetition rate is. To accomplish this operation without our MEMS-MOSFET hybrid switch, a comparator [14] or Schmitt trigger circuit can be used; however, these components require another external stable power source for the operation and reference voltage, which consumes energy all the time. In this demonstration, the discharging time is about 300 ms and predominantly determined by the impedance of the resistive load rather than the turn-on delay time of the voltage regulator.…”

Section: Circuit Operation and Resultsmentioning

confidence: 99%

Applications of MEMS-MOSFET Hybrid Switches to Power Management Circuits for Energy Harvesting Systems

Song¹,

Kang²,

Park³

et al. 2012

Journal of Power Electronics

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A hybrid switch that uses a microelectromechanical system (MEMS) switch as a gate driver of a MOSFET is applied to an energy harvesting system. The power management circuit adopting the hybrid switch provides ultralow leakage, self-referencing, and high current handling capability. Measurements show that solar energy harvester circuit utilizing the MEMS-MOSFET hybrid switch accumulates energy and charges a battery or drive a resistive load without any constant power supply and reference voltage. The leakage current during energy accumulation is less than 10 pA. The power management circuit adopting the proposed hybrid switch is believed to be an ideal solution to self-powered wireless sensor nodes in smart grid systems.

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Section: Circuit Operation and Resultsmentioning

confidence: 99%

Applications of MEMS-MOSFET Hybrid Switches to Power Management Circuits for Energy Harvesting Systems

Song¹,

Kang²,

Park³

et al. 2012

Journal of Power Electronics

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show abstract

“…On the other side, the value of L should be not too small in order to avoid a large peak current flowing in the circuitry. In this case, considering that transducer's best performance is expected to be within a range of vibration frequency corresponding to [8][9][10][11][12], the period of the mechanical oscillation will be about 83-125 ms. The value of each circuit parameter is summarized in Table I.…”

Section: Circuital Components Selectionmentioning

confidence: 99%

“…In other words, the energy harvested by the transducer and stored in a capacitor, in a supercapacitor or in a rechargeable battery should also supply the active circuitry, if any. In recent years, several papers have been published about the development of self-powered circuitry for power management [8]- [10], [12]- [14] and the problem to use the same energy accumulated in a tank to supply the circuitry has been addressed and solved in some of them [9], [10], [27]. The choice is between a "passive" or "active" solution.…”

Section: Introductionmentioning

confidence: 99%

A Self-Powered Electronic Interface for Electromagnetic Energy Harvester

Dallago

Danioni

Marchesi

et al. 2011

IEEE Trans. Power Electron.

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This paper presents a self-powered, active electronic interface for an energy harvesting system including a vibrationbased electromagnetic transducer. The transducer provides a peak voltage of 3.25 V when operated close to its mechanical resonance frequency (about 10.4 Hz) and the power converter has been designed to transfer the harvested energy to a storage capacitor. The circuit is a full-cycle inductive step-up ac/dc converter able to process every voltage pulse coming from the transducer; furthermore, it is supplied by the harvested energy, making the system fully autonomous. The interface has been designed exploiting an accurate model of the transducer in simulations. A printed circuit board version of the interface has been simulated and built to gather experimental results and validate the idea. The system demonstrated to be able to build a voltage across the storage capacitor, which is limited only by the safe operating area of the devices.

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“…Among these, electromagnetic harvesters seem appropriate because of their simple structure and low resonance frequency. Various electromagnetic energy harvesters using a single magnet have been investigated [4,5]. However, the power from these single magnet energy harvesters is very low and insufficient to power today's electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Vibration-Driven Electromagnetic Energy Harvester Using Multi-Pole Magnet

Munaz¹,

Chung²

2012

Journal of Sensor Science and Technology

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This paper presents the design and analysis of a vibration-driven electromagnetic energy harvester that uses a multi-pole magnet. The physical backgrounds of the vibration electromagnetic energy harvester are reported, and an ANSYS finite element analysis simulation has been used to determine the different alignments of the magnetic pole array with their flux lines and density. The basic working principles for a single and multi-pole magnet are illustrated and the proposed harvester has been presented in a schematic diagram. Mechanical parameters such as input frequency, maximum displacement, number of coil turns, and load resistance have been analyzed to obtain an optimized output power for the harvester through theoretical study. The paper reports a maximum of 1.005 mW of power with a load resistance of 1.9 kΩ for 5 magnets with 450 coil turns.

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An AA-Sized Vibration-Based Microgenerator for Wireless Sensors

Cited by 58 publications

References 4 publications

Applications of MEMS-MOSFET Hybrid Switches to Power Management Circuits for Energy Harvesting Systems

Applications of MEMS-MOSFET Hybrid Switches to Power Management Circuits for Energy Harvesting Systems

A Self-Powered Electronic Interface for Electromagnetic Energy Harvester

Design and Analysis of a Vibration-Driven Electromagnetic Energy Harvester Using Multi-Pole Magnet

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