Hybridized Piezoelectric and Electromagnetic Based Vibration Energy Harvester with Self-Powered SSHI Interface

Vibration energy harvesting becomes very popular nowadays especially by hybridizing several transduction mechanisms altogether to obtain enhanced output from the designed system. In this work, a 3D printed Electromagnetic (EM) module and a Piezoelectric (PE) transducer are hybridized with a synchronous switch harvesting on inductor (SSHI) topology based interfacing circuit to develop a self-powered energy harvester system. Both simulation and experimental characterization for the hybrid harvester have been carried out to verify the enhanced power out. A significant percentage improvement of 115.11% is obtained in the output power for EM-PE hybrid mode operation as compared to PE through experimentation. The Hybrid Mode Energy Harvester (HMEH) can drive 590nm LEDs successfully for the operational span of time.