Abstract
Wind energy has potential and usefulness as natural energy, and can be harvested from wide range of windy area. We have developed a flexible piezoelectric device (FPED) composed of polyvinylidene fluoride (PVDF) and functional polymers. The characteristics of the FPED are thin layer, light and flexible. Therefore, both a force caused by breeze and flow energy with various frequency spectrums can be used effectively using the FPED. In this study, we make clear electrical characteristics of the FPED and availability of an attached bluff body in uniform flow. Moreover, we validated improvement of electrical efficiency due to the structural changed FPED by conducting a vibration test.
