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Characteristics of Open-Loop Current Sensor with Temperature Compensation Circuit
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 Title & Authors
Characteristics of Open-Loop Current Sensor with Temperature Compensation Circuit
Ku, Myung-Hwan; Park, Ju-Gyeong; Cha, Guee-Soo; Kim, Dong-Hui; Choi, Jong-Sik;
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Open-type current sensors have been commonly used for DC motor controller, AC variable controller and Uninterruptible Power Supply. Recently they have begun to be used more widely, as the growth of renewable energy and smart-grid in power system. Considering most of the open-type current sensors are imported, developing the core technology needed to produce open-type current sensors is required. This paper describes the development and test results of open-type current sensors. Design of C type magnetic core, selection and test of a Hall sensor, design of current source circuit and signal conditioning circuit are described. 100A class DIP(Dual In-line Package) type and SMD(Surface Mount Devide) type open-type current sensors was made and tested. Test results show that the developed open-type current sensor satisfies the accuracy requirement of 2% and linearity requirement of 2% at 100 A of DC and AC current of 60Hz. Temperature compensation was carried out by using a temperature compensation circuit with NTC(Negative Temperature Coefficient) thermistor and the effect of the temperature compensation are described.
current sensor;Hall sensor;open-loop;temperature compensation;
 Cited by
Quan Zhang, Ji-Gou Liu, Yongcai Yang, "A new complementary symmetrical structure of using dual magnetic cores for open loop Hall-Effect current sensors," PCIM Europe, pp. 1904-1911, May, 2015.

Fu'an Li, Xiaobing Luo, Xingguo Cheng, Sheng Liu, "Impact of the winding area of enameled wire on packaging performance of a closed loop Hall effect current sensor," IEEE Electronic Components and Technology Conference (ECTC), pp. 1631-1635, May, 2012. DOI: crossref(new window)

Edward Ramsden, "Hall-Effect Sensors," Theory and Application, pp. 35-57, Elsevier, 2006.

Thomas L. Floyd and David M. Buchla, "Electronic Fundamentals, Circuit," Device and Applications, pp. 845-884, Pearson, 2010.