Electromagnetic energy harvester based on dynamic vibration absorber

Abstract

The invention provides an electromagnetic energy harvester based on a dynamic vibration absorber. The electromagnetic energy harvester comprises a vibration absorber portion and an energy collecting circuit portion. The vibration absorber portion comprises a magnet, a non-magnetic spring, a non-magnetic sleeve, a coil and a base, wherein the base is connected to the sleeve, the coil is wound around the sleeve, and the magnet is connected to a vibrating structure by a spring. The energy collecting circuit portion is an SS-SSHI energy collecting circuit for energy collection, and the energy supply to different devices is realized by changing the load resistance in the circuit. A vibration object is fixedly connected to the spring, the generated mechanical energy is converted into the kineticenergy of the magnet, the spring drives the magnet to reciprocate in the coil, so that the coil cuts magnetic lines of force for magnetoelectric conversion to generate a current, the current suppliesenergy to a load device through the energy collecting circuit, and therefore, the vibration absorber absorbs the vibration energy of a vibration structure and converts the vibration energy into available electric energy. According to the electromagnetic energy harvester, while the dynamic vibration absorber is used to perform vibration reduction on the vibration structure, the vibration energy absorbed by the vibration absorber is converted and collected to be the available electric energy.

Description

technical field [0001] The invention belongs to the field of electromagnetic energy, in particular to a novel electromagnetic energy collector based on a vibration absorber. Background technique [0002] Mechanical vibration can produce various hazards, and it is often the direct cause of mechanical structure failure and destruction. The problem of structural vibration control has long been one of the key research objects of researchers in the field. In practical engineering applications, how to effectively absorb and suppress the vibration of structures is also an issue of close concern in the fields of mechanical engineering, aerospace and other fields. [0003] The electromagnetic vibration absorbing device has simple structure, convenient installation and remarkable effect. It is more and more adopted by various vibration absorption and vibration reduction schemes. The permanent magnet moves in the magnetic coil of the closed loop and cuts the magnetic induction line, w...

AI Technical Summary

Problems solved by technology

Slightly higher vibration amplitudes have the potential to cause the thread to fail and thus the entire structure to fail

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