船用发电机转子-轴承系统动力学特性分析  

Dynamic Characteristics Analysis of Marine Generator Rotor-bearing System

作　　者：杨昔科 张燕 咸哲龙 董兴建[2] 彭志科[2] YANG Xike;ZHANG Yan;XIAN Zhelong;DONG Xingjian;PENG Zhike(Shanghai Electric Power Generation Equipment Co.,Ltd.Generator Plant,200240;Shanghai Jiao Tong University,200240)

机构地区：[1]上海电气电站设备有限公司发电机厂,200240 [2]上海交通大学,200240

出　　处：《电机技术》2025年第1期12-19,共8页Electrical Machinery Technology

摘　　要：研究了考虑船体运动的转子-轴承系统动力学特性。首先,基于椭圆轴承的动力学模型建立了油膜支承力与轴颈相对位置的关系;其次,将轴颈位置表达为轴与轴承绝对坐标之差,在绝对坐标系下建立转子轴承-船体耦合系统的动力学模型;最后,研究了不同船体运动和轴承开口角下的转子-轴承系统的动力学特性。结果表明:船体运动(尤其是船体横摇)对转子涡动幅值的抑制作用明显,对转子不平衡响应影响较小;在考虑船体运动后,调整轴承开口角能够有效抑制转子涡动,但不会对系统动态响应产生额外影响。The dynamic characteristics of a generator rotor-bearing system considering ship motions are studied.Firstly,based on the dynamic model of the elliptic bearing,the relationship between oil film supporting forces and relative position of the journal is established.Secondly,the journal position is expressed as the difference between the absolute coordinates of the shaft and the bearing,and the dynamic model of the rotor-bearing-ship coupling system is established in the absolute coordinate system.Finally,the dynamic characteristics of rotor-bearing system under different ship motions and bearing opening angles are stud-ied.The results show that the ship motion(especially the roll motion)has an obvious suppression on the amplitude of rotor whirl and little influence on the rotor unbalance response.After considering the motion of the ship,adjusting the bearing opening angle can effectively suppress the rotor whirl,but does not have any additional effect on the dynamic response of the system.

关 键 词：转子-轴承系统 滑动轴承 动力学分析 基础运动 轴承优化 

分 类 号：TM302[电气工程—电机]