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Wideband electrostatic Vibration Energy Harvester (e-VEH) having a low start-up voltage employing a high-voltage integrated interface
Date Issued
2013-12
Date Available
2014-02-20T14:37:47Z
Abstract
This paper reports on an electrostatic Vibration Energy Harvester (e-VEH) system,
for which the energy conversion process is initiated with a low bias voltage and is compatible
with wideband stochastic external vibrations. The system employs the auto-synchronous
conditioning circuit topology with the use of a novel dedicated integrated low-power highvoltage
switch that is needed to connect the charge pump and flyback - two main parts of
the used conditioning circuit. The proposed switch is designed and implemented in AMS035HV
CMOS technology. Thanks to the proposed switch device, which is driven with a low-voltage
ground-referenced logic, the e-VEH system may operate within a large voltage range, from a
pre-charge low voltage up to several tens volts. With such a high-voltage e-VEH operation, it is
possible to obtain a strong mechanical coupling and a high rate of vibration energy conversion.
The used transducer/resonator device is fabricated with a batch-processed MEMS technology.
When excited with stochastic vibrations having an acceleration level of 0.8 g rms distributed in
the band 110-170 Hz, up to 0.75 μW of net electrical power has been harvested with our system.
This work presents an important milestone in the challenge of designing a fully integrated smart
conditioning interface for the capacitive e-VEHs.
Sponsorship
Science Foundation Ireland
Type of Material
Conference Publication
Publisher
IOP Publishing
Language
English
Status of Item
Peer reviewed
Part of
Journal of Physics: Conference Series, Volume 476 conference 1
Conference Details
PowerMEMS, The 13th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, 3-6 December, London, UK
This item is made available under a Creative Commons License
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