三相异步电动机电源断相错相保护数字逻辑电路  

A Digital Logic Electric Circuit of Phase Failure and Phase Stagger Protection for Three-phase Asynchronous Motors

作　　者：黄宜红 

机构地区：[1]郴州市水利水电勘察设计研究院,423000

出　　处：《电机技术》2007年第5期40-42,共3页Electrical Machinery Technology

摘　　要：简单分析了三相异步电动机产生断相错相运行的原因及其危害性。设计出一种实用的数字逻辑电路。当三相电路出现断相错相故障时,该电路能自动断开三相电源线路,以保证电机的正常运行。The paper analyzed the reasons and its endanger of phase failure and phase stagger operation of threephase asynchronous motor. Synthesizing the consideration on two factor to influence of the motor, phase failure and phase stagger, a kind of practical arithmetic figure logical electric circuit was put forward. When the break phase failure and phase stagger occurs in the three-phase circuit, the electric circuit will be turned off to open the power supply circuit automatically, to guarantee the normal operation of motors.

关 键 词：三相异步电动机 断相 错相 保护 数字逻辑电路 

分 类 号：TM343.2[电气工程—电机]