Performance Analysis of a Rotational Energy Harvester with a Dynamically Changing Potential Energy Function

This paper details the design, theoretical analysis, and experimental implementation of a rotational energy harvester using PZT (Lead Zirconate Titanate) piezoelectric material. The system includes a spinning host with magnets and a beam magnet that generates attraction and repulsion forces to drive a PZT transducer at the beam's end. Vibration from the host, powered by a DC motor, activates the beam. The PZT transducer converts mechanical energy into electrical energy. The study includes theoretical analysis, simulations for performance forecasting, and experimental validation in a laboratory, showing consistent simulated and real-world results. The research highlights optimization strategies for enhancing the reliability and efficiency of piezoelectric energy harvesters, demonstrating feasibility for low-speed rotating applications. The system also features a dynamically changing potential energy function as part of the rotational energy harvester.