[关键词]
[摘要]
随着风电市场的发展,风力发电机功率逐渐提高,电机体积越来越大,体积增大为直驱电机运输带来困难。当电机外径大于5 m时,运输成本会随着电机直径增加而迅速增加。为了解决这一问题,需要考虑将电机沿着径向分为若干个模块,运输到项目现场后再进行电机总装配。电机分瓣后同一个线圈无法同时存在于不同的两瓣电机上,采用空槽结构可以有效解决这个问题。首先提出采用空槽结构实现直驱电机的分瓣技术。其次通过对比空槽与不空槽电机的电磁性能分析空槽的可行性。最后对比不同极槽配合下空槽对电机的电磁性能影响,得出空槽方案的可行性。
[Key word]
[Abstract]
With the development of the wind power market, the power of the wind generator is gradually increased, and the volume is larger and larger, which brings difficulties to the direct drive generator transportation. When the outer diameter of the motor is greater than 5 m, the transportation cost will increase rapidly. In order to solve this problem, it is necessary to consider dividing the motor into several parts along the radial direction and transporting it to the project site for general assembly of the motor. After the motor is divided into segments, one coil cannot exist on two parts at the same time. The empty slot structure can effectively solve this problem. Firstly, the split technology of direct drive generator with the empty slot structure is presented. Secondly, the feasibility of the empty slot structure is analyzed by comparing the electromagnetic performance of the motor with and without the empty slot. Finally, the influence of the empty slot on the electromagnetic performance of the motor with different pole-slot combination is calculated. The feasibility of the empty slot scheme is proved.
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