A study of electromagnetic vibration energy harvesters with different interface circuits

The resonant energy harvesting efficiency versus the normalised resistance and force factor for the SDOF electromagnetic vibration energy harvester connected to the four types of interface circuits: (a) standard interface; (b) SECE; (c) parallel SSHI; (d) series SSHI (top). The dimensionless harvested resonant power versus the normalised resistance and force factor for the SDOF electromagnetic vibration energy harvester connected to the four types of interface circuits: (a) standard interface; (b) SECE; (c) parallel SSHI; (d) series SSHI (bottom).