The development of DCU for AC drive locomotives is presented. Design elements of DCU modules and the fundamental principles for generalization and modularization design are put forward.

• 介绍了交流传动机车传动控制单元（DCU）的发展状况,阐述了DCU功能模块的设计要素以及实现通用化、模块化设计的几点基本原则。