目前,国内外斗容量为10米~3的中型电动挖掘机一般均采用可控硅励磁的发电机-电动机系统。而变流机组的原动机在容量选择上,国产挖掘机和国外同类型产品相比差距较大,如何合理选择原动机容量是个值得探讨的课题。本文拟就此谈点看法,供设计、研究和使用部门参考。 At present, medium-sized electric excavators with a domestic and foreign bucket capacity of 10 m~3 generally use thyristor-controlled generator-motor systems. The capacity of the prime mover of the converter unit is different from that of the foreign counterparts in terms of capacity selection. How to reasonably select the prime mover capacity is a subject worthy of discussion. This article intends to talk about this point of view for design, research and use department reference.