Optimization Design of Electromagnetic System of Hydraulic Electromagnetic Circuit Breaker

doi:10.16628/j.cnki.2095-8188.2021.05.008

Abstract

Abstract:

In order to improve the electromagnetic torque of the hydraulic electromagnetic circuit breaker,a certain type of hydraulic electromagnetic circuit breaker is used as an object for optimal design of its electromagnetic system.First,combined with virtual prototype technology,a three-dimensional physical model of the hydraulic electromagnetic circuit breaker was established according to the product design drawings.Then,considering that the output characteristics of the initial design of the electromagnetic system can not meet the requirements of tripping,the structure of the electromagnetic system of the circuit breaker is optimized based on finite element software Altair Flux,then its output characteristics could meet the requirements of tripping.Finally,the experimental system was built to test the electromagnetic torque of the circuit breaker,which verifies the accuracy of the finite element simulation.By increasing the output magnetic torque of the electromagnetic system of the circuit breaker,the unlocking reliability of the circuit breaker can be improved on the premise that the mechanism locking torque is determined.

Key words: hydraulic electromagnetic circuit breaker, electromagnetic torque, virtual prototype technology, electromagnetic system, three-dimensional physical model, unlock reliability

CLC Number:

TM561

ZHOU Xue, YONG Zhuang, LI Donghui, ZHAI Guofu. Optimization Design of Electromagnetic System of Hydraulic Electromagnetic Circuit Breaker[J]. LOW VOLTAGE APPARATUS, 2021, 0(5): 41-47.

Figures/Tables 19

References 14

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技术方案名称	动铁心受力/N		衔铁片电磁力矩/(N·mm)
技术方案名称	100%I_n	105%I_n	衔铁片电磁力矩/(N·mm)
指标要求	≤0.050	≥0.050	30.00
原始设计	0.043	0.048	10.26
优化方案一	0.046	0.051	31.85
优化方案二	0.047	0.052	31.50

过载电流	电磁力矩/(N·mm)		相对误差/%
过载电流	仿真结果	实验结果	相对误差/%
105%I_n	0.284 9	0.290 9	2.06
135%I_n	0.335 7	0.330 4	1.60
150%I_n	0.358 1	0.365 2	1.94

过载电流	电磁力矩/(N·mm)		相对误差/%
过载电流	仿真结果	实验结果	相对误差/%
105%I_n	10.26	10.33	0.71
135%I_n	11.36	11.48	1.07
150%I_n	11.91	11.98	0.62

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