双绕线式异步电动机传动的牵引机挂钩牵重控制

The Control of Tractor Drived by Double - Winding Asynchronous Motors Hooking and Pulling Heavy Loads

双绕线式异步电动机传动的牵引机挂钩牵重控制是大型火电厂卸煤系统煤车牵引的一种常见运行方式。本文提出的控制方法,可根据牵引机的运行状态的变化,相应地改变电动机的定子电压、转子电阻和电动机运行方式,从而解决了牵引机空载低速挂钩,最大转矩重载启动和高速牵、接煤车的安全、经济运行问题。

The control of tractor drived by double - winding asynchronous motors hooking and pulling heavy loads is a nomal work scheme . The control method presented in this paper could correspondingly change motor's rotor resistances , stator voltage and operation way according to the variety of tractor operation states . This method can also solve the problems of tractor drived by double - winding asynchronous motors in safe and economic operation, such as : empty load hangling hook at lowspeed , heavy load starting with maximum torgue taking and polling railway cars at high speed .