美国一名工程师最近开发出了一种新型的多转子风力涡轮设备,具有体积小、成本低的优点。目前的风力发电站往往规模庞大,通常由几十台涡轮机和数百个浆叶组成,差不多相当于一座小型城市。制造、运输和安装这些设备的成本高昂,而且工程复杂。与此不同的是,美国工程师道格·塞尔萨姆设计的这种被称“天空中的蛇”的风轮使用的是各种大小的转子,它们都 An American engineer recently developed a new multi-rotor wind turbine equipment that has the advantages of small size and low cost. Today’s wind farms are often large-scale, often composed of dozens of turbines and hundreds of blades, almost the size of a small city. The cost of manufacturing, shipping and installing these devices is expensive and complex. In contrast, the American rotor called ’The Snake in the Sky’ designed by American engineer Doug Sellars uses rotors of all sizes, all of them