In view of the drawbacks existed in speed regulation of electrical locomotive with series resistance, the transformation of choppingspeed regulation is put forward.
针对串电阻调速电机车存在的弊端，提出进行斩波调速改造。
2
To meet the practical needs of production technics, a solve scheme of inherent feedback choppingspeed regulation is put forward by using DSP processor to realize closed loop control.
The paper also expatiates the speed regulation principle of IGBT, emphatically analyzes both economic and social benefits achieved after the transformation of choppingspeed regulation.