基于联合仿真的断路器合闸电磁铁的动态特性研究

doi:10.11985/2023.01.011

摘要/Abstract

摘要：

新设计的船用直流断路器合闸装置，必须满足形体小巧、动作快速、静态保持稳定可靠的要求。选用电磁铁和脱扣架等联合动作的合闸装置设计方案，并对其动作特性进行了研究。建立了合闸装置的电磁力和机械运动数学方程；构建了核心部件电磁铁的有限元仿真模型，仿真分析了电、磁、力、位移、速度的变化情况；并以此为输入条件，建立了结构强度最低的脱扣架ANSYS联合仿真模型，验证了合闸过程中其结构应力小于Von Mises屈服极限，对比分析了仿真与样机试验的电流和位移数据。结果表明，当电源为交流220 V 50 Hz全波整流时，合闸装置可在19.6 ms内完成6 mm行程，验证了仿真结果的正确性。创新之处是设计了一套结构小巧、简单实用的锁脱扣机械装置，工程应用结果表明其性能可靠。新方案为船用直流断路器合闸装置的设计提供了参考。

关键词: 电磁铁, 有限元仿真, ANSYS仿真, 结构应力, 动态特性

Abstract:

The newly designed marine DC circuit breaker closing device must meet the requirements of small size, fast action, stable and reliable static maintenance. The design scheme of the closing device with the combined action of electromagnet and tripping frame is selected, and its action characteristics are studied. The mathematical equations of electromagnetic force and mechanical motion of the closing device are established; the finite element simulation model of the core component electromagnet is constructed, and the changes of electricity, magnetism, force, displacement and speed are simulated and analyzed; and this is used as input conditions, an ANSYS co-simulation model of the tripping frame with the lowest structural strength is established, and it is verified that the structural stress during the closing process is less than the Von Mises yield limit. The current and displacement data of the simulation and prototype experiments are compared and analyzed. The results show that when the power supply is AC 220 V 50 Hz full-wave rectification, the closing device can complete a 6 mm stroke within 19.6 ms, which verifies the correctness of the simulation results. The innovation of this paper is to design a set of small structure, simple and practical locking trip mechanical device, engineering application results show that its performance is reliable. The new scheme provides a reference for the design of marine DC circuit breaker closing device.

Key words: Electromagnet, finite element simulation, ANSYS simulation, structural stress, dynamic characteristics

中图分类号:

TM774

孙雷强, 庄劲武, 王冲, 孙宇鹏, 马文骄. 基于联合仿真的断路器合闸电磁铁的动态特性研究[J]. 电气工程学报, 2023, 18(1): 104-110.

SUN Leiqiang, ZHUANG Jinwu, WANG Chong, SUN Yupeng, MA Wenjiao. Research on Dynamic Characteristics of Circuit Breaker’s Closing Electromagnet Based on Co-simulation[J]. Journal of Electrical Engineering, 2023, 18(1): 104-110.

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技术参数	数值
额定工作电压/V	DC180~220
线圈电阻/Ω	41
额定工作电流/A	2.5
线圈匝数	1 600
线径/mm	0.4