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充分的改善空载电压波形的发电机优化设计,确保电能质量是我们当前非常重要的一个课题,采用极靴偏心和阻尼条偏心等一些不对称刺激结构设计方案,对一台45MW的大型水轮发电机空载电压波形采取有效的措施进行优化设计,同时还要在这一过程中应用二微运动电磁场长路耦合过程中步有限元模型,对其进行全面的分析和计算。其结果充分的证明科学合理的偏移极靴和阻尼条的位置能够十分有效的减少齿谐波,同时还能十分有效的改善气隙磁场分布和空载电压的波形,计算结果和具体的数据是高度吻合的。
In order to improve the power quality, it is a very important issue for us to fully optimize the generator design of no-load voltage waveform. Some asymmetric stimulation structural design schemes, such as the eccentricity of the pole piece and eccentricity of the damping strip, The generator no-load voltage waveform is taken effective measures to optimize the design. At the same time, it is necessary to apply the step finite element model of two-micro-motion electromagnetic field long-path coupling process in this process, and conduct a comprehensive analysis and calculation. The results fully prove that the position of the offset pole piece and the damping strip can be very effective in reducing the tooth harmonics and can effectively improve the air gap magnetic field distribution and the no-load voltage waveform. The calculation results and the specific data Is highly consistent.