| 一种新的基于霍尔传感器的电流测量方法 |
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| 引用本文： | 谢完成,戴瑜兴. 一种新的基于霍尔传感器的电流测量方法[J]. 电子测量与仪器学报, 2012, 26(8): 705-710 |
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| 作者姓名： | 谢完成 戴瑜兴 |
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| 作者单位： | 1. 湖南省娄底职业技术学院电子信息工程系,娄底,417000
2. 湖南大学电气与信息工程学院,长沙,410082 |
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| 摘 要： | 提出了一种新的电力电流测量方法。该方法采用了无集磁铁芯的霍尔传感器,将4个霍尔传感器对称地分布在通流母线的周围,传感器的输出联结到权值加法器上。权值加法器实现了一种均值操作效应,因此加法器实际的输出是4个霍尔传感器输出的平均,该方法降低了外部的磁场干扰。利用传统的电流互感器和按照新方法设计的霍尔电流互感器进行了实验对比,结果表明霍尔电流互感器虽然还不能和达到传统的高精度CT,但是仍能达到0.5~1的精度等级,说明了该方法的可行性。
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| 关 键 词： | 无集磁铁芯 霍尔效应传感器 电流互感器 电力电流测量 |
New current measurement method based on Hall sensors |
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| Xie Wancheng , Dai Yuxing. New current measurement method based on Hall sensors[J]. Journal of Electronic Measurement and Instrument, 2012, 26(8): 705-710 |
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| Authors: | Xie Wancheng Dai Yuxing |
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| Affiliation: | Xie Wancheng Dai Yuxing (1. Department of Electronics Engineering, Loudi Vocational and Technical College, Loudi 417000, China; 2. School of Electric and Information Engineering, Hunan University, Changsha 410082, China) |
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| Abstract: | A new method for performing power current measurement is proposed. This method involves the use of Hall sensors without iron cores. The electric conducting cable is around by four Hall sensors connected to a weighted ad- der. Four coreless Hall sensors are symmetrically attached to an electric conducting cable, and the output of sensor is connected to the weighted adder. The weighted adder performs the ＂average＂ operation, thereby obtains the average voltage. Since the average Hall voltage is obtained, the HCT can eliminate the ambient interference. A measurement framework is designed and implemented to compare a series of waveforms obtained by HCTs with those measured by traditional current transformers （CTs）. The testing data by HCT is acceptable although it is not batter than the CT＇ s. The result proves that this current measurement by HCT is feasible. |
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| Keywords: | Coreless Hall effect sensor current transformer（CT） power current measurement |
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