不对称电路引起电机故障的分析及防治  

ANALYSIS AND PRECAUTIONS OF UNBALANCED CIRCUIT AROUSING ENGINE BREAKDOWN

作　　者：何世复 

机构地区：[1]合肥化工厂化院

出　　处：《合肥工业大学学报（自然科学版）》1994年第4期109-112,共4页Journal of Hefei University of Technology：Natural Science

摘　　要：在多速电机控制回路中，常因接触器的故障而使电机不对称运行．本文以不平衡三相电路理论计算出电机绕组的不对称电压，找出了使电机损坏的原因，从而提出在基本不增加投资的情况下自行增设交流接触器的检测电路或用滑差电机代替多速电机的预防与改进措施．n the circuit of controlling multispeed motor, the motor is often in the state of unsymmetrical operating for the contactors being out of working.The unsymmetrical volt on the motor coils,which is found to be the reason why the motor has bean out of work, is worked out through the theory of the unbalanced three-phase alternative current circuit. A good measure is taken to impove the operating in which we added an measuring control circuit with an alternative contactor in the circuit and replaced the multispeed motor by an asynchronous motor.

关 键 词：电压不对称度 电机 故障 电路 

分 类 号：TM307[电气工程—电机]