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- 联合动力UP5300-176型风力发电机组的工作原理是一个
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- 00:00:05,200 --> 00:00:06,770
- 融合了空气动能转换、
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- 00:00:06,770 --> 00:00:10,946
- 机械传动、电磁感应与电力电子技术的能量转换过程
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- 00:00:10,946 --> 00:00:13,760
- 整个过程可划分为四个部分:
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- 00:00:13,760 --> 00:00:18,880
- 第一部分是风能捕获与机械传动 风轮是捕获风能的部件
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- 00:00:18,880 --> 00:00:22,160
- 叶轮的叶片基于空气动力学原理设计
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- 00:00:22,160 --> 00:00:23,860
- 当风流经叶片时
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- 00:00:23,860 --> 00:00:27,173
- 片前后缘在叶片两个表面产生压力差
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- 00:00:27,173 --> 00:00:32,826
- 从而形成驱动叶片旋转的气动力矩 将风能转化为机械能
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- 00:00:32,827 --> 00:00:36,407
- 叶片旋转的机械能通过轮毂传递至主轴
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- 00:00:36,407 --> 00:00:38,537
- 从主轴传递至齿轮箱
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- 00:00:38,537 --> 00:00:43,287
- 齿轮箱将低转速机械能转化为发电机所需的高转速机械能
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- 00:00:43,287 --> 00:00:43,288
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- 00:00:43,288 --> 00:00:47,641
- 第二部分是齿轮箱高速轴驱动发电机的转子
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- 00:00:47,641 --> 00:00:51,481
- 其转子的旋转磁场与定子绕组发生相对运动
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- 00:00:51,481 --> 00:00:53,831
- 根据法拉第电磁感应定律
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- 00:00:53,831 --> 00:00:57,201
- 变化的磁场会在导体中产生感应电动势
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- 00:00:57,201 --> 00:00:59,401
- 从而感应出三相交流
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- 00:00:59,401 --> 00:01:01,971
- 与此同时为了实现恒频发电
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- 00:01:01,971 --> 00:01:04,811
- 变流器会向转子绕组输入一个频率、
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- 00:01:04,811 --> 00:01:07,901
- 幅值和相位均可控的三相交流电流
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- 00:01:07,907 --> 00:01:11,641
- 确保输出与电网同步的50HZ交流电
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- 00:01:11,641 --> 00:01:15,581
- 第三部分是发电机的能量通过两条路径传递
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- 00:01:15,581 --> 00:01:19,431
- 其中的定子路径直接由定子绕组输出送出至电网
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- 00:01:19,988 --> 00:01:24,138
- 转子路径则是通过转子绕组输出双馈变流器
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- 00:01:24,138 --> 00:01:27,188
- 当发电机转子转速低于同步转速时
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- 00:01:27,188 --> 00:01:30,008
- 将电网的能量输入发电机转子
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- 00:01:30,008 --> 00:01:32,888
- 当发电机转子高于同步转速时
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- 00:01:32,888 --> 00:01:35,368
- 将发电机转子的电能输送至电网
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- 00:01:35,935 --> 00:01:38,215
- 第四部分是升压与并网
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- 00:01:38,215 --> 00:01:40,345
- 从发电机输出的交流电
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- 00:01:40,345 --> 00:01:45,255
- 通过安装在塔基的箱式变压器升压至10kV或35kV
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- 00:01:45,255 --> 00:01:46,948
- 并入国家电网
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