The measuring method of the frequencycharacteristic of harmonic losses in convertor transformers is presented. The measuring results in a convertor transformer are given and are analyzed.
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。
2
In frequency analysis of rotating arc signal, the phase of harmoniccharacteristic reflects the initial Angle between weld direction and seam's direction.
在旋转电弧信号的频域分析中，其特征谐波的相位反映了焊缝方向与焊接方向的初始夹角。
3
So harmonic current should be suppressed firstly rather than harmonic voltage. The harmoniccharacteristic on the network side and the ac side of medium-frequency power supply is analyzed.