Design of the Electromagnetic - Piezoelectric Composite Vibration Energy Harvesting System

摘要

In recent years, with the rapid development of micro electromechanical systems, low-power sensor networks and integrated circuit technology, the power supply problems are becoming the barrier of environment protection in practical and industrial. Vibration is a widely used energy in the environment, which has the potential to power the low power consumption system. However, the traditional vibration energy harvesting structure is relatively simple and its power generation capacity is weak, so we propose an electromagnetic and piezoelectric composite energy harvesting system based on cantilever structure. An composite energy conversion circuits is designed to transform the alternating current (AC) to direct current (DC), and the experiment verified the feasibility of the circuit, and the total power is increased than single mode.