Patent ID: 11870367
Assignee: UNIVERSITY OF MARYLAND, BALTIMORE
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 5:
6. A rotary structure comprising at least two blades and at least one piezoelectric energy harvester (PEH), wherein the PEH comprises a piezoelectric cantilever beam and a disk, wherein the disk rotates about a disk axle and comprises a first magnet and optionally an unbalanced mass, and wherein the piezoelectric cantilever beam comprises a second magnet positioned on a tip of the piezoelectric cantilever beam, wherein during every spin of the at least two blades of the rotary structure, the disk rotates and the first magnet exerts a force on the second magnet on the cantilever tip such that the piezoelectric cantilever beam vibrates and generates electrical energy, and wherein the disk axle is substantially parallel to a blade span of the rotary structure.