The Commonwealth of Australia

Scott David Moss

Genevieve A Hart

Some embodiments relate to an energy conversion device, comprising: a casing; an electromagnetic (EM) transducer disposed at one side of the casing; a round magnet disposed in the casing and free to move relative to the casing and the EM transducer in at least two degrees of freedom; and a ferromagnetic object fixed relative to the casing at an opposite side of the casing to the EM transducer and arranged to attract the magnet toward a rest position within the casing. The EM transducer is positioned so that movement of the magnet relative to the EM transducer varies the magnetic field through the EM transducer, thereby generating electrical potential across at least a part of the EM transducer.

Vibration energy harvesting using cycloidal motion

Some embodiments relate to an energy conversion device comprising: a casing; a magnet disposed in the casing: an object in the casing attracted to the magnet and free to move relative to the magnet in at least two degrees of freedom; and at least one transducer element positioned to be affected by changes in a magnetic field of the magnet; wherein movement of the object relative to the magnet varies the magnetic field through the at least one transducer element, thereby generating electrical potential across a part of the at least one transducer element. In some embodiments, the transducer element may comprise a magnetostrictive piezoelectric (MP) element and the electrical potential may be generated across a piezoelectric part of the MP element. Alternatively, the transducer element may comprise an electromagnetic (EM) coil element.

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Coburg, Australia

Scott David Moss