Over the last few decades the consumption of fossil fuels and other non-renewable energy sources has risen concerns regarding the protection of the environment. With this in mind, this work presents a design, characterization and numerical and experimental analyses of a wind turbine using piezoelectric transducers for low power (mW) devices based on the concept of energy harvesting. The prototype has approximate dimensions of $84.5\times 87\times 20$ mm${}^3$; the excitation is performed by permanent magnets, which were glued to the generator's axis with a 120$°$ lag. Every magnet interacts with the free end of a steel beam ($60\times 13\times 0.15$ mm${}^3$), with a piezoelectric ceramic (PZT C-64) on its surface. Different numerical and experimental analyses were performed to optimize the beam geometry, piezo dimension, the mass fixed at the beam's end, the generated electrical voltage and especially the available maximum output power. Finally, the best performing model is reported for different working conditions, providing a maximum output power of 2.06 mW for only one beam and 3.78 mW for three beams in parallel association, with an associated power density of 18.8 $\mu$W/mm${}^3$ and 11.5 $\mu$W/mm${}^3$, respectively.

在过去的几十年中，化石燃料和其他不可再生能源的消耗引起了人们对环境保护的关注。考虑到这一点，这项工作基于能量收集的概念，为低功率（mW）装置提供了使用压电换能器的风力涡轮机的设计，表征以及数值和实验分析。原型的尺寸约为$84.5\times 87\times 20$ 毫米${}^3$; 励磁由永磁体完成，永磁体用120粘在发电机轴上$°$落后。每个磁铁都与钢梁的自由端相互作用（$60\times 13\times 0.15$ 毫米${}^3$），其表面上带有压电陶瓷（PZT C-64）。进行了不同的数值和实验分析，以优化梁的几何形状，压电尺寸，固定在梁末端的质量，产生的电压，尤其是可用的最大输出功率。最后，报告了在不同工作条件下性能最佳的模型，该模型并联关联时仅对一束光束提供2.06 mW的最大输出功率，而对三束光束提供3.78 mW的最大输出功率，且相关的功率密度为18.8 $\mu$宽/毫米${}^3$ 和11.5 $\mu$宽/毫米${}^3$， 分别。