电动振动发生器气隙磁通与工作台漏磁的优化研究

杨 李
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摘要

气隙磁通和工作台漏磁是电动振动发生器的两个重要性能指标。要求漏磁尽可能小,气隙磁通尽可能大。目前增加气隙磁通的一般方法是增加励磁线圈的安匝数,但漏磁会同步增加。增加消磁线圈可以减少漏磁,但在设计、制造和使用上都不方便,甚至在某些位置产生较大的杂散磁场。根据使用经验,适当减小上下励磁线圈的安匝比,可有效减少漏磁。针对这一现象,模拟了在安培匝数不变的情况下,不同上下励磁安匝比对气隙磁通和漏磁的影响。本文从气隙磁场和表面漏磁的角度出发,建立了一种平衡气隙磁场和表面漏磁的新方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimization Research of Air Gap Flux and Table Magnetic Flux Leakage in Electrodynamic Vibration Generator
Air gap magnetic flux and magnetic flux leakage on the table are two important performance indi-* cators of the electrodynamic vibration generator. It’s required that the magnetic flux leakage should be as small as possible and air gap magnetic flux should be as large as possible. At present, the general method of increasing the air gap magnetic flux is to increase the ampere-turns of the excitation coil, but the magnetic flux leakage will increase synchronously. The magnetic flux leakage can be reduced by adding a degaussing coil, but it is inconvenient in the design, manufacture and use, and even generates larger stray magnetic fields in some locations. According to the use experience, appropriately reducing the ampere-turns ratio of upper and lower excitation coil can effectively reduce the magnetic flux leakage. Aiming at this phenomenon, it’s simulated that the influence of different upper and lower excitation ampere-turns ratio on air gap flux and magnetic flux leakage when the when the number of ampere-turns remains unchanged. In this paper, con-sidering the air gap magnetic field and the surface magnetic flux leakage, a new method of balanc-ing the air gap flux and the surface leakage is established.
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