水轮机转子磁悬浮承重系统之电磁装置漏磁研究

材料写作网    时间: 2020-06-29 05:15:31     阅读:次

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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