串级调速系统的谐波和抑制

本文对静止式串级调速系统中的电流谐波及其特点作了详细分析,並阐明了强迫换流串级调速系统线电流严重畸变的原因。为了减少和抑制这些谐波,给出了三种可行的解决方案,以求在改善和提高串级调速系统的功率因数的同时,谐波亦得到抑制。除了进行理论分析外,亦由串级调速系统的实测的频谱图和电流波形给予证实。

The Harmonic in Static Scherbius Drive and Its Restraint

The detailed analyses of current harmonic in Scherbius Drive and the characteristics of harmonic are offered in this paper. Meanwhile, the cause of serious distortion of line current in Scherbious Drive with forced commutation is revealed. In order to restrain these harmonics, three feasible ways are provided, they improve the system power factor as well. Expect the theoretical analyses, the spectrums and current wave forms measured in the prototype Scherbius Drive support the theoretical analyses.