基于闭环TMR电流传感器的磁屏结构的设计和模拟.
Qiuyang Li1, Suqin Xiong1, Shuo Wang2
1China Electric Power Research Institute Co., Ltd., Beijing 100192, China.
Micromachines
|March 27, 2025
概括
这项研究将道磁阻 (TMR) 电流传感器增强为一种新的磁屏蔽包. 新设计显著提高了灵敏度和精度,使TMR传感器在强磁场中更加可靠.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 物理 物理学 物理
背景情况:
- 道磁阻 (TMR) 电流传感器具有高灵敏度,线性和广泛的测量范围,导致其广泛的工业采用.
- 闭环TMR传感器对于在各种应用中精确检测电流至关重要.
- 外部电磁干扰对TMR电流传感器的准确性和稳定性构成重大挑战.
研究的目的:
- 分析影响闭环TMR电流传感器灵敏度的结构参数.
- 为TMR电流传感器提出和设计一种新的磁屏蔽包架构.
- 评估拟议屏蔽在改善电磁干扰下的传感器性能方面的有效性.
主要方法:
- 使用COMSOL Multiphysics 6.2软件进行TMR传感器结构的有限元分析.
- 设计并模拟了一种新的磁屏蔽包架构.
- 在强磁场环境中进行电流检测实验,以验证模拟结果.
主要成果:
- 与单个磁环相比,新型磁性屏蔽包架构的屏蔽效率提高了44.3%.
- 与传统的TMR传感器结构相比,测量精度提高了2.1倍.
- 实验验证证了屏蔽包在抑制外部电磁干扰和提高传感器稳定性方面的有效性.
结论:
- 开发的磁屏套件显著提高了闭环TMR电流传感器的性能.
- 这项研究为在具有挑战性的电磁环境中部署高精度TMR传感器提供了宝贵的理论和实践见解.
- 这些发现为工业应用中更强大,更准确的电流传感解决方案铺平了道路.
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