Study on Operating Mechanism Characteristics of DC Circuit Breaker Based on Semi-hard Magnetic Material

LAN Jian; FENG Ying; WANG Chengyu; LUO Jiawang; HU Qihao; WU Jianwen; LI Zulei

doi:10.13296/j.1001-1609.hva.2025.11.017

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Study on Operating Mechanism Characteristics of DC Circuit Breaker Based on Semi-hard Magnetic Material

Research & Analysis | 更新时间：2025-11-04

- Study on Operating Mechanism Characteristics of DC Circuit Breaker Based on Semi-hard Magnetic Material
- High Voltage Apparatus Vol. 61, Issue 11, Pages: 187-195(2025)
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- DOI：10.13296/j.1001-1609.hva.2025.11.017
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- Received：19 April 2025，
  
  Revised：2025-09-12，
  
  Published：16 November 2025
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LAN Jian, FENG Ying, WANG Chengyu, et al. Study on Operating Mechanism Characteristics of DC Circuit Breaker Based on Semi-hard Magnetic Material[J]. High voltage apparatus, 2025, 61(11): 187-195.
DOI：

LAN Jian, FENG Ying, WANG Chengyu, et al. Study on Operating Mechanism Characteristics of DC Circuit Breaker Based on Semi-hard Magnetic Material[J]. High voltage apparatus, 2025, 61(11): 187-195. DOI： 10.13296/j.1001-1609.hva.2025.11.017.

摘要

由于柔性直流输配电系统发生故障时电流上升快、破坏性强，亟需快速稳定的直流断路器。文中提出一种基于半硬磁材料的操动—保持一体化机构，兼具电磁激励快速响应与高保持力特性。首先利用Jiles-Atherton结合粒子群算法分析了半硬磁材料的磁滞特性，并建立了半硬磁机构的等效磁路，分析机构电磁力的影响因素。然后，基于Comsol多物理场有限元仿真软件建立了半硬磁机构的仿真模型，分析了半硬磁机构的静态过程与动态过程，得到了过程中的电磁特性与机械特性。最后，根据仿真结果搭建了半硬磁机构样机，进行半硬磁机构动作实验，得到样机的动态特性，与仿真结果进行对比，验证了仿真的正确性，为后续的半硬磁机构研究与设计工作提供了一种高效、精确的计算方法和理论基础。

Abstract

Due to the rapid current rise and strong destructiveness of VSC-HVDC transmission system in the faut，a fast and stable DC circuit breaker is urgently necessary In this paper，an integrated actuating and holding mechanism based on semi-hard magnetic material，which has the characteristics of fast response and high holding force，is proposed. First，Jiles-Atherton combined with particle swarm optimization is used to analyze the hysteresis characteristics of semi-hard magnetic materials，and the equivalent magnetic circuit of semi-hard magnetic mechanism is set up to analyze the influencing factors of electromagnetic force of the mechanism. Then，the simulation model of the semihard magnetic mechanism is set up based on Comsol multiphysics finite element simulation software. Both static and dynamic processes of the semi-hard magnetic mechanism are analyzed，and the electromagnetic and mechanical characteristics in the process are obtained. Finally，a semi-hard magnetic mechanism prototype is set up in accordance with the simulation results，and the operation experiment of the semi-hard magnetic mechanism is performed to obtain the dynamic characteristics of the prototype. The correctness of the simulation is verified by comparing with the simulation results，which can provide an efficient and precise calculation method as well as theoretical basis for the subsequent research and design of the semi-hard magnetic mechanism.

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