矿用电机车 meaning in Chinese

electric locomotive for mine
mining electric locomotive

New battery charger for mining electric locomotive
新型矿用电机车蓄电池充电装置
In this paper , a basic principle of ac speed regulating system for a new type asynchronous motor of battery locomotive used in coal mine is introduced , the special requirements of the system are analyzed , and the direct torque control design scheme is proposed
介绍了一种新型蓄电池式矿用电机车交流异步电动机调速系统的基本原理，分析了这种调速系统的特殊要求，提出了采用直接力矩控制技术实现力矩控制的设计方案。