drive winding造句
例句与造句
- preservative compounds for koepe friction drive winding ropes in mining; safety requirements and testing
采矿用koepe摩擦传动卷绕钢索的防锈化合物.安全性要 - see, the storm of the lord will burst out in wrath, a driving wind swirling down on the heads of the wicked
23看哪，耶和华的忿怒好像暴风已经发出。是扫灭的暴风，必转到恶人的头上。 - it is designed to last for 100 years withstanding the driving winds and crushing ice of the strait and even impacts with passing ships
这座桥用了100年，持续禁得住开快车并且通过船压碎海峡的冰影响。 - on the third morning there were the clouds ennis had expected, a grey racer out of the west, a bar of darkness driving wind before it and small flakes
到了第三天，不出埃尼斯所料，那块雨云果然挟着风，夹着雪片，灰蒙蒙地从西面涌来。 - all of the corn, all of the oats, everything was just cut off by the driving wind storms and the dust of south dakota landed in our ditches and they were filled as if it were snow
我说，爸爸你失去了一切，所有的粟米和小麦都不见了。巨风吹走了一切的谷物，只馀下从南达科卡吹来的泥土。 - It's difficult to find drive winding in a sentence. 用drive winding造句挺难的
- first, variable speed constant frequency wind energy convertion theory is described in this paper, then presents a review on the development of wind turbines control and the main types of generator and static converters used to interface variable speed wind turbines to the electric grid . then discuss main circuit constructure and advantage of direct drive wind energy conversion system and introduce pitch-control method for wind power traction and electric power stability . simply aerodynamic characteristic of the turbine is analysised and permanent magnet synchnonous generator math model is established . to convert the variable frequency electricity into utility grid, back to back four-quadrant pwm-vsi is used and three typies of control strategy is presented to capture the maximum wind energy and transmit energy . then simulation is implemented to test the control strategy . in the following chapter a simple ac-dc-ac converter with a dc-dc boosting chopper is proposed to transmit the wind energy into electricity energy and two control strategy is presented
建立了永磁电机和变流器的数学模型,针对双pwm变频器的特点提出了三种控制策略对变流器进行控制,通过变流器交-直-交的变换,将发电机发出的变频变幅值交流电转化为可用的恒定频率的交流电,通过pwm调治能使其输出功率因数为一,并且该控制系统功率因数为可调,能在特殊情况下同电网交换一定的无功功率,并通过对变流器的控制实现了最大风能俘获的功能。最后采用matlab/simulink进行了仿真,取得了良好的仿真效果。在风力发电系统中,采用先进的最大功率俘获算法,能有效的从风中获得最大的能量。