基于抗磁悬浮的气流能量采集器

研究了一种由外壳、提升磁体、上热解石墨板、线圈、永磁体转子和下热解石墨板构成的气流能量采集器,自由悬浮于两热解石墨板之间的永磁体转子可在外界气流的作用下转动,并在线圈中产生感应电压。采用有限元软件COMSOL Multiphysics 5.3和ANSYS Maxwell 16.0建立仿真模型,对能量采集器的悬浮特性、驱动特性和输出特性进行仿真分析通过实验验证,发现当喷嘴为83°时转子所受的气流驱动力矩最大;实验测试永磁体转子悬浮高度56.5 mm,与仿真高度57.5 mm误差仅为1.77%;能量采集器稳定工作的气流量范围为137 sccm^733 sccm,最大输出电压可达160 mV。

Airflow Energy Harvester Based on Diamagnetic Levitation

A kind of airflow energy harvester composed of a lifting magnet,an upper pyrolysis graphite plate,coils,a permanent magnets rotor,a lifting magnet and lower pyrolysis graphite plate was studied.A permanent magnet rotor which freely levitated between two pyrolytic graphite plates can be rotated by the external airflow and generate an induced voltage in the coils.The finite element software COMSOL Multiphysics 5.3 and ANSYS Maxwell 16.0 were used to establish the simulation model.The levitation characteristics,driving characteristics and output characteristics of the energy harvester were analyzed.The experimental results showed that the driving torque is the largest when the nozzle was 83°;the experimental levitation height 56.5 mm and the simulation height 57.5 mm error is only 1.77%;The air flow range of the energy harvester for stable operation is 137 sccm^733 sccm.And the maximum output voltage in the simulation is 160 mV.