A Planar Electromagnetic Vibration Energy Harvester with a Halbach Array
نویسندگان
چکیده
This paper presents a low-profile, planar electromagnetic vibration energy harvester integrated with a Halbach array. Halbach array is a special arrangement of permanent magnets that doubles the magnetic field on one side of the array while cancelling the field to near zero on the other side. Using this arrangement can improve electromagnetic coupling in a limited space. The energy harvester has a resonant frequency of 44.9Hz and generated an average power of over 120μW when excited at 0.3g (1g = 9.8m·s). The electromagnetic vibration energy harvester reported here is only 4mm thick, which makes it one of the thinnest electromagnetic energy harvesters among existing non-MEMS devices.
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