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水轮机转子磁悬浮承重系统之电磁装置漏磁研究

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摘要:面对传统推力轴承支承系统存在的问题,本着采用混合磁悬浮装置和传统推力轴承共同完成支撑的目的,研究了漏磁对电磁装置的影响。为此,引入了气隙比的概念,提出了通过改变气隙比的值来研究漏磁对系统悬浮力的影响,通过一系列仿真,得出了随着漏磁的增加,系统电磁悬浮力反而增大的结论。结合了陕西安康水电站水轮机组的数据,通过各方面的约束,在永磁装置确定的情况下,计算出了电磁装置较优的电气及结构参数。

关键词:电磁悬浮; 漏磁比; ANSYS; 水轮发电机组

中图分类号:TN91134文献标识码:A文章编号:1004373X(2011)22019405

Study on Leakage of Magnetic Device in Magneticlevitation Bearing

System for Hydraulic Turbinegenerator Rotor Unit

MA Hongzhong, CHEN Yuanjun

(College of Electrical Engineering, Hohai University, Nanjing 211100, China)

Abstract: In allusion to the problems on traditional thrust bearing support system, the influence of magnetic leakage on electromagnetic devices is studied to realize the the purpose of support with hybrid magneticlevitation device and traditional thrust bearing. The concept of airgap ratio is introduced for the purpose. A method to study the influence of magnetic flux leakage on suspension force by changing the value of the airgap ratio is proposed. A conclusion that the electromagnetic levitation force increases with the increase of the magnetic flux leakage is obtained by a series of simulation. In combition with the real data from the hydroelectric generating set of Ankang Hydroelectric Station, a result that the magnetic device is better than the electric system was got by calculation with a certain permanent magnetic device.

Keywords: electromagnetic levitation; airgap ratio; ANSYS; hydroelectric generating set

收稿日期:201106260引言

磁悬浮技术是集电磁学、电力电子技术、控制工程、信号处理...



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