[关键词]
[摘要]
双馈风力发电机(DFIG)的转子绝缘结构在变频电压冲击下,会承受恶劣的电应力。虽然耐电晕聚酰亚胺薄膜及其复合材料可以提高转子绝缘结构寿命,但是在成本控制的压力下,需要探索普通绝缘材料应用于转子绝缘结构的可行性。通过电场有限元仿真和试样绕组试验,证实单面玻璃丝布补强少胶云母带可以单独使用或配合聚酯薄膜补强少胶云母带使用种绝缘结构电气性能均良好,完全能够满足风力发电机转子绝缘结构设计要求。
[Key word]
[Abstract]
The rotor insulation structure of doubly-fed induction generator (DFIG) bears severe electric stress under the impact of variable frequency voltage. Although the coronaresistant polyimide film and its composite materials can increase the life of the rotor insulation structure, the feasibility of applying common insulation materials to the rotor insulation structure needs to be explored under the pressure of cost control. Through the electric field finite element simulation and the sample winding test, it is proved that the single-side glass fabric reinforced mica tape can be used alone or in combination with the polyester film reinforced mica tape. Both insulation structures have good electrical properties and can completely meet the design requirements of the wind turbine rotor insulation structure.
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