تحلیل مودال یک توربین باد محورعمودی با قابلیت نصب روی تیرهای چراغ شهری

In this paper, the feasibility of mounting a vertical-axis wind turbine (VAWT) on a standard urban streetlight pole is investigated. The VAWT is modeled as a lumped mass at the pole’s top, and a free modal analysis is conducted to assess dynamic behavior. To enhance structural safety against resonance, natural frequencies are extracted under varying mass conditions (0–60 kg) and two geometric configurations (pole lengths of 9.3 m and 5 m). Results indicate that shortening the pole increases its natural frequency, thereby improving dynamic stability and reducing resonance risk. Conversely, increasing turbine mass lowers the natural frequency, shifting system response toward lower harmonics and potentially increasing vulnerability to wind-induced vibrations. This study confirms that identifying natural frequencies and ensuring sufficient separation from environmental excitation frequencies such as those caused by wind vortex shedding can effectively prevent structural fatigue and premature failure. The findings support the safe integration of small-scale VAWTs into existing streetlight infrastructure without compromising structural integrity.