Preparation and properties of electromagnetic generator based on magnetic fabric
To overcome the defects of large rigidity and the low load of magnetic particles in the magnetic component of an electromagnetic generator,Nd2Fe14B magnetic powder was used as the magnetic material,weft-knitted hollow webbing as the flexible matrix,and waterborne polyurethane as the packaging layer to prepare magnetic yarns,which were then woven into magnetic fabrics.A magnetoelectric generation system and magnetoelectric clothing generator based on magnetic fabric and a conductive coil were prepared,and their electrical output performance was tested.The results show that the load of magnetic particles in magnetic yarn is up to 182.80 mg/cm,and the magnetic intensity of the magnetic fabric reaches 38 mT.The electrical output performance of the magnetoelectric generation system improves with increasing the content of magnetic particles,the number of turns of the conductive coil,the speed of relative movement,and reducing the vertical working distance.The voltage and current generated by the magnetoelectric clothing generator reach 2.42 V and 6.26 mA respectively,and the maximum output power density can reach 439.94 mW/m2.This electromagnetic generator based on magnetic fabric is expected to be applied in the field of wearable self-powered devices.
electromagnetic generatorelectromagnetic induction effectmagnetic fabricmagnetic yarnNd2Fe14B magnetic powder
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