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Research of end fields and eddy current losses for air-cooling steam-turbo-generator
Pages: 29-34
Year: Issue:  1
Journal: Electric Machines and Control

Keyword:  turbo-generatorsend regiontransient magnetic fieldeddy current lossfinite element meth-od;
Abstract: 针对大型空冷汽轮发电机端部磁场分布和各结构件的涡流损耗难以准确计算的问题,对大型空冷发电机端部结构进行三维实体建模,建立了电机端部三维非线性瞬态涡流场的数学模型,阐述了对激励源的选择和结构件建模的方法,较全面地考虑了材料特性、结构件形状等因素对电机性能的影响.以一台200MW空冷汽轮发电机为例,用有限元法对其在额定工况下的端部电磁场分布和结构件中的涡流损耗进行计算.将所得的结果与实测值进行比较,分...
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