Non-contact repulsive-force excitation for highly endurable wide frequency-range energy-harvesting

This paper presents a miniaturized energy-harvester for high-efficiently generating electric-power in a wide frequency-range. A magnetic inertial mass is used to couple energy from ambient vibration and intermittently excites the frequency increased generators (FIG) by repulsive magnetic force. Then the FIGs convert this energy into a high frequency electric energy. The non-contact repulsive-force excited energy-harvester is advantageous in large power-output and reliable working-life. The fabricated device is able to work in wide operating range. At 1g input acceleration, 4.45mW peak-power is generated.

[1]  R. B. Yates,et al.  Development of an electromagnetic micro-generator , 2001 .

[2]  Neil M. White,et al.  Design and fabrication of a new vibration-based electromechanical power generator , 2001 .

[3]  R. Puers,et al.  An electret-based electrostatic /spl mu/-generator , 2003, TRANSDUCERS '03. 12th International Conference on Solid-State Sensors, Actuators and Microsystems. Digest of Technical Papers (Cat. No.03TH8664).

[4]  S. Beeby,et al.  Energy harvesting vibration sources for microsystems applications , 2006 .

[5]  K. Najafi,et al.  Non-resonant bi-stable frequency-increased power scavenger from low-frequency ambient vibration , 2009, TRANSDUCERS 2009 - 2009 International Solid-State Sensors, Actuators and Microsystems Conference.