Airflow energy harvesting with high wind velocities for industrial applications

16th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications

物理学;能源学

Chew, Z.J.^1 ; Tuddenham, S.B.^1 ; Zhu, M.^1

College of Engineering, Mathematics and Physical Sciences, University of Exeter, Exeter

EX4 4QF, United Kingdom^1

关键词: Electromagnetic generators;    Energy Harvester;    Harvesting energies;    Maximum power point;    Maximum Power Point Tracking;    Overall efficiency;    Quiescent currents;    Savonius turbine;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/773/1/012091/pdf
DOI  :  10.1088/1742-6596/773/1/012091

来源: IOP

【 摘 要 】

An airflow energy harvester capable of harvesting energy from vortices at high speed is presented in this paper. The airflow energy harvester is implemented using a modified helical Savonius turbine and an electromagnetic generator. A power management module with maximum power point finding capability is used to manage the harvested energy and convert the low voltage magnitude from the generator to a usable level for wireless sensors. The airflow energy harvester is characterized using vortex generated by air hitting a plate in a wind tunnel. By using an aircraft environment with wind speed of 17 m/s as case study, the output power of the airflow energy harvester is measured to be 126 mW. The overall efficiency of the power management module is 45.76 to 61.2%, with maximum power point tracking efficiency of 94.21 to 99.72% for wind speed of 10 to 18 m/s, and has a quiescent current of 790 nA for the maximum power point tracking circuit.