An Electric Permanent Magnet Motor Operating Mechanism Improvement

doi:10.11985/2018.09.008

Abstract

Abstract:

This paper describes the problem and improvement measures of the micro circuit breaker in the start-up of an electric actuator permanent magnet motor. Using LabVIEW software to test and analyze the parameters such as current and angle, the reason of the trip is that the design of motor armature resistance is small. The experiment shows that by increasing the armature resistance, the starting current is reduced and the micro-circuit breaker is eliminated, and the operation requirement of the electric actuator is satisfied.

Key words: Electric operating mechanism, permanent magnet motor, miniature circuit breaker, trip

CLC Number:

TM33

Wei Kai,Ma Feng Liu, ,Chen Xu. An Electric Permanent Magnet Motor Operating Mechanism Improvement[J]. Journal of Electrical Engineering, 2018, 13(9): 44-49.

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序号	引发因素	验证及测试情况	结论
1	电机绝缘问题	电机绝缘电阻2 500MΩ,属正常	排除
2	电机回路电压过高	电机电压DC241V,小于110%额定电压	排除
3	回路绝缘有问题	回路绝缘电阻为2 500MΩ,属正常	排除
4	负载过大	数显力矩扳手测量：负载值正常	排除
5	空开型号选择问题	空开额定容量为10A,电机额定电流为3.8A,选择有裕度^[13,14]	排除
6	回路中其他元件问题	只接入空开与电机,仍出现跳闸,与其他元件无关	排除
7	电机问题	电机转子部位有烁伤,有异常火花	电机问题

电机类别	额定电压 /V	额定电流 /A	额定功率 /W	额定转速/(r/min)	电阻值/Ω
A	220	2.5	370	1400	13
B	220	3.0	400	400	13
C	220	3.3	450	1000	17
问题电机	220	3.8	550	1400	11

试验电压	试验方法/次	试验结果
DC220V	10	未跳闸
DC242V	1000	未跳闸
DC260V	100	未跳闸
DC280V	50	未跳闸