2025 Volume 81 Issue 16 Article ID: 24-16197
In light of the recent emphasis on energy harvesting, the technology utilizing tiny amounts of energy around us to realize sustainable society, we focused on small wind generation that utilize energy from turbulent flows generated in urban areas. In this study, we developed an algorithm to estimate the instantaneous theoretical maximum power generation utilizing urban wind, which is highly variable with time and has large turbulence intensity. When the load resistance in the circuit was dynamically controlled based on the wind speed, it was found that the higher the turbulence intensity, the higher the power gen-eration efficiency under the same mean wind speed. We point out that dynamically controlled load resistance could improve power generation by at least 2.6 times compared to the fixed resistance case.
