关键词 : 永磁同步发电机 ; PWM 变频器 ; 谐波损耗 ; 有限元法 [gap=1388]Key words: permanent magnet synchronous generators; PWM converter; harmonic losses; finite elementg
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In 500kV network, the calculating of energy losses is based on electricity quantities flow, and three aspects ought to be considered, including distribution feature of long line; corona losses of lines; harmonic energy losses.
500kV电网电能损耗计算以基于潮流的电量法为基础,计算中应当计及长线路的分布参数特性、导线的电晕损耗和网络谐波损耗。
参考来源 - 计及电晕和谐波的500kV电力网电能损耗计算·2,447,543篇论文数据，部分数据来源于NoteExpress
同时整流变压器的附加谐波损耗得到了有效降低，功率因数得到提高，改善了系统的电能质量。
Consequently, the additional harmonic loss of rectifier transformer is reduced, the power factor is enhanced and the power quality is improved.
通过研究，系统解决了大容量干式励磁变压器参数优化、谐波含量及谐波损耗计算等技术难题。
Through this research, a series of difficult technical problems on parameter optimization and on calculation of the content and loss of harmonic waves, etc. have been solved.
介绍了一种实际测量换流变压器谐波损耗频率特性的方法，给出了在一台换流变压器上的实际测量结果。
The measuring method of the frequency characteristic of harmonic losses in convertor transformers is presented. The measuring results in a convertor transformer are given and are analyzed.
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