Simulation and test verification of piezoelectric cantilever vibration energy harvester

Piezoelectric ceramic vibration energy harvester has attracted great attention for its simple structure, environment protection, easy miniaturization and other advantages. According to piezoelectric effect, a double-coupled distributed parameter model was established using mode method by combination of electromechanical theory and structural dynamics theory. Simulation analysis of effect of excitation frequency and load on output voltage of piezoelectric energy harvester was performed. Al-cantilever energy harvester was made to perform ground vibration and energy harvesting test. The experimental results are in good agreement with the numerical simulation, which verifies the correctness of theoretical modeling. Experimental results show that the max voltage output of a single piezoelectric patch is 73 V/N.