CAJ | 학술논문

应用有限元计算方法实现汽轮发电机电磁场分析，可以直接观看电机磁力线和磁密分布情况，结合图表处理得到磁密波形、电压波形及空载特性曲线，对电压波形进行谐波分析，提取基波和谐波，从而方便地算出波形畸变率、电话谐波因数．以一台65MW汽轮发电机作为实例，对有限元计算结果及样机试验数据对比分析，验证了有限元计算结果的准确性，为汽轮发电机设计引入有限元计算方法提供了有价值的参考．
응용유한원계산방법실현기륜발전궤전자장분석，가이직접관간전궤자력선화자밀분포정황，결합도표처리득도자밀파형、전압파형급공재특성곡선，대전압파형진행해파분석，제취기파화해파，종이방편지산출파형기변솔、전화해파인수．이일태65MW기륜발전궤작위실례，대유한원계산결과급양궤시험수거대비분석，험증료유한원계산결과적준학성，위기륜발전궤설계인입유한원계산방법제공료유개치적삼고．
Applying the finite-element method to electromagnetic field analysis of steam-turbine generator, we can see directly lines of magnetic force and distribution of magnetic flux density, and using graph pro- cessing, we can get magnetic flux density waveform, voltage waveform and no-load characteristic,extract fundamental wave and harmonic wave by means of harmonic wave analysis on voltage waveform and figure out voltage waveform distortion factor, voltage adjustment factor and THF conveniently. A 65MW steam- turbine generator was taken for example in this paper. A comparative analysis was made on these results of the FEA method and model machine test, which verified the accuracy of calculation results of the FEA. The results provide a valuable reference for the application of the FEA calculation to steam-turbine genera- tor design.