凸极同步电动机转子无磁及电网频率变化对运行的影响  

Influence of Rotor Demagnetization and Power Grid Frequency Variation on Operation of Salient-Pole Synchronous Motors

作　　者：姜巍 Jiang Wei(Jiamusi Electric Machine Co.,Ltd.,Jiamusi 154002,China)

机构地区：[1]佳木斯电机股份有限公司,黑龙江佳木斯154002

出　　处：《防爆电机》2022年第4期35-36,49,共3页Explosion-proof Electric Machine

摘　　要：凸极同步电动机转子的励磁方式通常采用电励磁的方式,由于整流桥故障、电机转子断线或转子励磁绕组短路,就会导致转子无法励磁而失去磁场,另外电网频率的变化也会对正常带载运行的电机产生非常大的影响,下面对在这两种常见情况分别发生时在电机内部产生的影响进行分析,以便读者对这一现象有更直观的了解,有一定的实际使用指导意义。The rotor excitation of the salient-pole synchronous motor usually adopts the way of electric excitation.Due to the fault of rectifier bridge,the broken wire of rotor or the short circuit of rotor excitation windings,the rotor will fail to excite and then lose magnetism,and the frequency variation of power grid will also have a very large impact on the normal onload operation of motor.In the following,the influence of the two kinds of common situations respectively generated inside the motor is analyzed,so that let the reader understand this phenomenon intuitively.It has a certain guiding significance in practical application.

关 键 词：频率变化 转子无磁 附加转矩 过电流 

分 类 号：TM303.5[电气工程—电机]