Overview of environmental airflow energy harvesting technology based on piezoelectric effect

With the development of environmental energy harvesting technology, the research focus gradually develops from the energy harvester itself to the energy harvesting system of coupled environmental vibration sources, in which environmental airflow energy harvesting technology based on the piezoelectric effect is an important research direction. Here, the study status and development trend of piezoelectric energy harvesting were reviewed and summarized including rotation types, vortex-induced vibration types, flutter types and resonant types. It was found that the rotational multi-array energy harvesters are easy to scale, and the vortex-induced vibration and the flutter energy harvesters are poor adaptability for wide range of airflow velocity, and the resonant types can effectively improve excitation energy and output power. In order to improve power generation capacity and broaden the range of airflow velocity, energy harvesting with multiple frequency excitation and multi-piezoelectric array are future main development tendencies.

Automated summary

With the development of environmental energy harvesting technology, the research focus has shifted towards the energy harvesting system of coupled environmental vibration sources, particularly on the piezoelectric energy harvesting technology based on the piezoelectric effect. The study reviewed and summarized the different types of piezoelectric energy harvesting, highlighting the benefits of rotational types, the limitations of vortex-induced vibration and flutter types, and the effectiveness of resonant types in improving energy and power output. The future main development tendencies involve multiple frequency excitation and multi-piezoelectric array for enhanced power generation capacity and broader range of airflow velocity.