Modeling and Simulation of Piezoelectric Energy Harvesting Device Coupled with Self Powered Interface Circuits

Piezoelectric energy harvester system has fascinated rigorous consideration in the area of self powered wireless sensor networks. A complete piezoelectric energy harvesting system constitutes three basic components namely, piezoelectric device, interfacing circuits and storage element. In this paper, a simulation study has been carried out on coupled modeling between piezoelectric device and other interfacing circuits. It has been observed that approximately 99 mu W, 83 mu W and 30 mu W maximum power across 100k Omega optimum load resistance has been obtained from P-SSHI, S-SSHI and SECE interfacing circuits, respectively. Therefore, it can be stated that coupled modeling with self powered P-SSHI circuit performed better as compared to S-SSHI and SECE circuits.