Name : [in Japanese]
Date : March 26, 2020 - March 27, 2020
Pages P03-
This paper reports the electrostatic vibration energy harvesters(EVEH) indicating broadband characteristic at low frequency using nonlinear spring erects by electrostatic force of electret. In the device, the electret counter electrodes periodically pass each other due to vibration. The electrode period and the electret voltage were adjusted so that a flat region was generated in the potential energy. .In the simulation, when the electrode period was tripled, a six-fold short-circuit current was obtained at 40 Hz. The longer the flat band region of the potential, the larger the vibration amplitude at a minute acceleration.