Development of an AA size energy transducer with micro resonators

Abstract

This paper presents the preliminary design and experimental results of a standard AA size vibration-induced micro energy transducer which is integrated with a power-management circuit. The generator is a spring mass system which uses laser-micromachined copper springs to convert mechanical energy into electrical power by Faraday's Law of Induction. A power-management circuit is used to step up the AC output and act as a reservoir to store the electrical energy generated. Our goal is for the generator to provide 3V DC output with low input mechanical frequencies, and to produce enough power for low-power wireless applications. Potential applications for this micro power generator to serve as a power supply for infrared transmission and radio frequency transmission was proved to be possible with input frequencies below lOOHz and amplitudes be 250microns..

A Miniature Energy Harvesting Device for Wireless Sensors in Electric Power System

“…The values of the parameters , , and used in Models (4), (6), and (11) are listed in Table IV in the Appendix .…”

“…3(a)], is the perimeter of the cross section of the core, i.e., , is half the inside perimeter of the toroidal core i.e., [33]. According to [30], the accuracy of the model described by (6) for pot core structures is within 2% provided is shorter than the and is larger than about 5.…”

“…To incorporate the effect of a layered core material with air gaps in between the layers we propose to modify (6). If there are mu-metal layers in the core, then there are ( ) interlayer gaps.…”

“…Randall [5] showed the use of photovoltaic technology specifically applicable to indoor lighting environments. Lee et al [6] showed that by using moving magnets through a coil and a spring for a resonant structure, vibrational energy could be converted resulting in up to 830 of power. Shenck and Paradiso [7] focused on scavenging power from human movement.…”

Design And Analysis Of A Capacitive Vibration-To-Electrical Energy Converter With Built-In Voltage

“…vibration, heat, radiation, pressure variations or chemical energy. There are three widespread physical principles for vibration-to-electrical energy conversion -piezoelectric [1][2][3][4], capacitive [5,6] and inductive [7][8][9][10]. The capacitive principle can be implemented with particular ease in MEMS technology.…”