摘要
简述了直流电动机的起动过程及要求,并介绍了并励直流电动机的简化模型及特点。给出了并励直流电动机起动线路常见的两种接法,并对电路中的参数电枢电流和励磁磁通进行了详细的数学推导。结果表明,前一种起动线路中电枢电流和励磁磁通比后一种起动线路中电枢电流和励磁磁通都要大,从而有较大的电磁转矩,有利于并励直流电动机的起动。
This paper briefly describes the starting process of DC motor and its requirements, introduces the simplified model of shunt DC motor and its characteristics, and proposes two common connection methods of shunt DC motor starting circuit. A detailed mathematic derivation on the parameters of armature current and excitation flux in the starting circuit was carried out . The results show that the armature current and excitation flux in the former starting circuit are larger than that in the latter, thus the electromagnetic torque is also larger in the former. It is helpful for starting of shunt DC motor.
出处
《防爆电机》
2011年第4期27-29,共3页
Explosion-proof Electric Machine
基金
陕西省教育厅产业化项目(2010JC19)
关键词
并励直流电动机
电枢电流
励磁磁通
电磁转矩
Shunt DC motor
armature current
excitation flux
electromagnetic torque
