| 引用本文: | 刘君,吴广宁,周利军,吕玮,王万岗,马果.零磁通传感器的研究[J].电力自动化设备,2009,(8): |
| .Zero-flux type current sensor[J].Electric Power Automation Equipment,2009,(8): |
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| 摘要: |
| 分析了传统电流传感器存在的固有误差及其影响因素:根据磁动势方程设计了一种双级结构的电流传感器,以消除励磁误差;由电磁感应定律与磁路定律建立了传感器的仿真模型:采用DSP增益自适应方案,动态调整补偿信号幅值及相位,保证自动补偿励磁电流,使之工作在零磁通状态.测试实验与现场应用证明,设计的零磁通电流传感器准确度可达0.1级.能满足在线监测信号采集的需要. |
| 关键词: 电流传感器 误差 零磁通 补偿 在线监测 |
| DOI： |
| 分类号:TP212.13 |
| 基金项目: |
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| Zero-flux type current sensor |
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LIU Jun WU Guangning ZHOU Lijun L(U) Wei WANG Wangang MA Guo
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| Abstract: |
| The inherent error and influencing factors of traditional current sensor are analyzed.In order to eliminate the excitation error,a current sensor of two-stage structure is designed according to magnetic momentum equation.By the electromagnetic induction law and the magnetic path law,the sensor simulation model is established.The DSP-gain self-adaptation scheme is used to automatically compensate the excita-tion current by adjusting the amplitude and phase of compensation signal,so that the current sensor is... |
| Key words: current sensor error zero flux compensation online monitoring |
