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风力发电机不同功率的设计效率哪个标准里提到了。麻烦能给我说一下

风力发电机不同功率的设计效率哪个标准里提到了。麻烦能给我说一下

浏览：38次 | 提问时间： 08-05 10:50

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贞子长发为谁留 08-05 10:51

额定功率是风力发电机在额定风速以上“稳定”输出的功率,也是一般发电机、齿*箱等主要部件设计中额定功率的依据.实际中,定桨矩风机额定功率一般是风力发电机的设计最大输出,当风速大于额定风速时,根据叶片翼型的特性,功率会稍有些下降.变桨矩风机就是当风速达到额定风速时,风力发电机的功率,当风速大于额定风速时,控制器会控制变桨,将功率限定在额定功率.额定功率下效率也就是轴机械功率与发电机出口电功率之比,一般就是齿*箱与发电机的效率之积.希望可以帮到你~！

Ranph゜忌光 08-05 11:00

槑喜 08-05 11:08

小型风力发电机一般应在风力*较丰富的地区使用。即年平均风速在3m／s以上，全年3-20m／s有效风速累计时数3000h以上；全年3-20m／s平均有效风能密度lOOW／m2以上。在选择使用风力发电机时，要做到心中有数，避免盲目性，这样才能充分地利用当地的风力*，最大限度地发挥风力发电机的效率，取得较高的经济效益。应该指出的是，在风力*丰富地区，最好选择风机额定设计风速与当地最佳设计风速相吻合的风力发电机。如能做到这一点无论是从风力机的选择上，还是利用风力*的经济意义上都有重要的意义。风洞试验证明，风*的转换功率与风速的立方成正比，也就是说，风速对功率影响最大。例如，在当地最佳设计风速为6m／s的地区，安装一台额定设计风速为8m／s的风力发电机，结果其年额定输出功率只达到原设计输出功率的42％，也就是说，风力发电机额定输出功率较设计值降低了58%。若选用的风力发电机额定设计风速越高，那么其额定功率输出的效果就越加不理想。但也必须指出，风力发电机额定设计风速偏低，其风*直径、电机相对要增大，整机造价相应也就加大．从*和产品的经济意义上考虑都是不合算的。

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