It is concluded that the causes of sudden vibration are oil film whirl and thermal unbalance of generator rotor resulting from interturn short-circuit and hindered winding expansion etc.

认为突发性振动原因是运行中转子的油膜涡动和匝间短路、线圈膨胀受阻等引起的热不平衡。

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The results show that the change of oil-film whirl angle makes the characteristics of journal bearing change greatly, and the more the whirl radius is, the more the influence is.

结果表明，油膜涡动角度的变化对三油楔固定瓦滑动轴承的静、动特性和稳定性将产生很大的影响，且这种影响随油膜涡动半径增大而增大。

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