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http://dx.doi.org/10.4283/JKMS.2005.15.1.048

AC Current Sensor Using Air Core  

Park, Young-Tae (Korea Research Institute of Standards and Science Electromagnetic Metrology Division)
Jung, Jae-Kap (Korea Research Institute of Standards and Science Electromagnetic Metrology Division)
Publication Information
Journal of the Korean Magnetics Society / v.15, no.1, 2005 , pp. 48-52 More about this Journal
Abstract
This paper describes a current sensor for precision current measurement of an electronic watt-hour meter that is going to install in houses in the future. As the current sensor is based on an cored principle (the Rogowski principle) it is not subject to usual limitations of saturation and non-linearity of general current transformers. An advantage of the developed current sensor is that non-linearity error in low current range is improved and the construction can be kept simple using an air core. We present a magnetic field analysis of the sensor using a finite-element solver. We compared the measured values versus the calculated values.
Keywords
a current sensor; an electronic water-hour meter; an air core; Rogowski principle; a finite-element solver;
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