Piezoelectric Energy Harvesters: An Overview on Design Strategies and Topologies

This brief presents a tutorial on topologies of piezoelectric energy harvesting circuits. The latest design technologies are systematically summarized. The topologies are classified according to the energy storage devices and the input excitation. The working principles and design strategies of different topologies are compared and analyzed. Considerations such as topology generation, loss analysis and optimization, system volume and energy efficiency are also discussed.