Design and fabrication of a 300A class general-purpose current sensor

Title & Authors
Design and fabrication of a 300A class general-purpose current sensor
Park, Ju-Gyeong; Cha, Guee-Soo; Ku, Myung-Hwan;

Abstract
Current sensors are used widely in the fields of current control, monitoring, and measuring. They have become more popular with the increasing demand for smart grids in a power network, generation of renewable energy, electric cars, and hybrid cars. Although open loop Hall effect current sensors have merits, such as low cost, small size, and weight, they have low accuracy. This paper describes the design and fabrication of a 300A open loop current sensor that has high accuracy and temperature performance. The core of the current sensor was calculated numerically and the signal conditioning circuits were designed using circuit analysis software. The characteristics of the manufactured open loop current sensor of 300 A class was measured at currents up to 300 A. According to the test of the current sensor, the accuracy error and linearity error were 0.75% and 0.19%, respectively. When the temperature compensation was carried out with the relevant circuit, the temperature coefficients were less than $\small{0.012%/^{\circ}C}$ at temperatures between $\small{-25^{\circ}C}$ and $\small{85^{\circ}C}$.
Keywords
Accuracy error;Current sensor;Hall effect;Linearity error;Temperature compensation;
Language
Korean
Cited by
References
1.
G. Velasco-Quesada, M. Roman-Lumbreras, A. Conesa-Roca, F. Jerez, "Design of a Low-Consumption Fluxgate Transducer for High-Current Measurement Applications," IEEE Sensors Journal, vol. 11, no. 2, pp. 280-287, Feb. 2011. DOI: http://dx.doi.org/10.1109/JSEN.2010.2054831

2.
X. Yang, Y. Li, W. Guo, W. Zheng, C. Xie, H. Yu, "A New Compact Fluxgate Current Sensor for AC and DC Application," IEEE Trans. Magnetics, vol. 50, no. 11, 4005704, Nov. 2014. DOI: http://dx.doi.org/10.1109/TMAG.2014.2330373

3.
C. Liu, J. G. Liu, "Offset Error reduction in Open Loop Hall Effect Current Sensors Powered with Single Voltage Source," 2014 5th IEEE International Workshop on Applied Measurements for Power Systems (AMPS), Aachen, Germany, Sept. 2014. DOI: http://dx.doi.org/10.1109/amps.2014.6947705

4.
G. Gokmen, K. Tuncalp, "The design of a Hall effect current transformer and examination of the linearity with real time parameter estimation," Electronics and Electrical Enigineering, No. 5(101), pp.3-8, 2010.

5.
Q. Zhang, J. G. Liu, "A new complementary symmetrical structure of using dual magnetic cores for open loop Hall-Effect current sensors," PCIM Europe 2015, Nuremberg, Germany, pp.1904-1911, May 2015.

6.
LEM Co. Product Information [Internet], "Current Transducer HTB 50..400-P/SP5," Available From: http://www.lem.com/hq/en/component/option,com_catalog/task,displaymodel/id,64.04.46.000.0/. (accessed Apr. 20, 2016)

7.
AKM Co. Product Information [Internet], "GaAs Hall Element HG-372A Datasheet," Available From: http://www.akm.com/akm/en/file/datasheet/HG-372A.pdf. (accessed Apr. 20, 2016)

8.
E. Ramsden, Hall-Effect Sensors, Theory and Application, pp.35-57, Elsevier, 2006.

9.
C. H. Kim, "NTC-thermistor," GoldenBell, 2011, Available From: http://terms.naver.com/entry.nhn?docId=1982027&ref=y&cid=42331&categoryId=42334#_179. (accessed May 20, 2016) DOI: http://dx.doi.org/10.1016/B978-075067934-3/50004-1