Low Frequency High Power Energy Harvester
The vibration energy harvester has become a hot spot because it can supply energy to device without battery. Four types of vibration energy harvesters with different operation modes are introduced in low frequency and high power aspects. They are electromagnetic, magnetostrictive, electrostatic and piezoelectric vibration energy harvester. Their developments are illustrated in detail. Meanwhile, the advantages and disadvantages of the four different structures are compared, and the performances are summarized. Among them, piezoelectric vibration energy harvester was studied the earliest. So, it has better performance and can be used widely.