以某跟踪式光伏发电系统为研究对象,通过编写自定义程序代码UDF对Fluent进行二次开发,建立单轴跟踪式光伏结构的二维模型,研究其在风荷载作用下的扭转振动问题。研究结果表明：风速达到某一特值后,结构出现等幅周期性振动,发生软颤振现象,而其阻尼比对抑制扭转振动有一定的作用,这同实际情况较吻合;光伏组件倾角在0°~20°范围内时,倾角越大,扭转振动的临界风速越低。
Abstract
Taking a tracking photovoltaic power generation system as the research object, Fluent software was developed twice by writing a custom program code UDF, and a two-dimensional model of single-axis tracking photovoltaic structure was established, and its torsional vibration under wind load was studied. The results show that when the wind speed reaches a certain special value, the photovoltaic panel has periodic vibration with equal amplitude and soft flutter phenomenon, and its damping ratio has a certain effect on suppressing torsional vibration, which is consistent with the actual situation. When the inclination angle of photovoltaic panel is in the range of 0°-20°, the larger the inclination angle, the lower the critical wind speed of torsional vibration.
关键词
太阳能 /
光伏组件 /
风效应 /
流固耦合 /
扭转振动 /
阻尼
Key words
solar energy /
PV modules /
wind effects /
fluid-solid coupling /
torsional vibration /
damping
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