A multi-degree of freedom piezoelectric vibration energy harvester with piezoelectric elements inserted between two nearby oscillators
The proposed two degree of freedom piezoelectric vibration energy harvester could generate 9.78 times energy than that of a conventional two degree of freedom piezoelectric vibration energy harvester. The improvements of harvesting performance can be achieved with minor modification to the system. A comparison of piezoelectric vibration energy harvesters from one degree of freedom to five degree of freedom has been conducted. A generalized multiple degree of freedom piezoelectric vibration energy harvesting model is presented for parameter study and dimensionless analysis.
vibration energy harvester piezoelectric elements oscillators multiple degree of freedom