High efficiency vibration energy harvester

Electrical generator or motor structure – Dynamoelectric – Reciprocating

Reexamination Certificate

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C310S328000, C073S861770, C324S260000

Reexamination Certificate

active

06984902

ABSTRACT:
In a vibrational energy harvester, an external vibration causes relative motion between a permanent magnet and a magnetic field sensing element composed of a magnetostrictive material bonded to an electroactive material. The changing magnetic field causes a rotation of magnetization in the magnetostrictive material and the rotating magnetization generates a stress in the magnetostrictive material. The stress is transmitted to the electroactive material, which responds by generating electrical power.

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