Title :
Effect of nonlinear external circuit on electrostatic damping force of micro electret generator
Author :
Miki, Daigo ; Suzuki, Yuji ; Kasagi, Nobuhide
Author_Institution :
Dept. of Mech. Eng., Univ. of Tokyo, Tokyo, Japan
Abstract :
A complete electromechanical model of vibration-driven micro electret power generators has been developed, and its characteristics are directly compared with experimental data to verify the model. Nonlinear power management circuit for rectification and impedance conversion is also assumed. It is found that the electrostatic damping force acting on the seismic mass is dependent on the external circuit. From coupling simulation with a mechanical vibration model, it is also found that the circuit parameters should be optimized dependent on the oscillation condition.
Keywords :
electrets; electric generators; energy harvesting; nonlinear network analysis; electromechanical model; electrostatic damping force; nonlinear external circuit; nonlinear power management circuit; seismic mass; vibration-driven microelectret power generators; Character generation; Circuit simulation; Coupling circuits; Damping; Electrets; Electrostatics; Energy management; Impedance; Power generation; Vibrations; Damping force; Electret; Energy harvesting; Impedance conversion; Nonlinear circuit;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference, 2009. TRANSDUCERS 2009. International
Conference_Location :
Denver, CO
Print_ISBN :
978-1-4244-4190-7
Electronic_ISBN :
978-1-4244-4193-8
DOI :
10.1109/SENSOR.2009.5285405
