Coreless Hall Current Sensor for Automotive Inverters Decoupling Cross-coupled Field


Vol. 9, No. 1, pp. 68-73, Jan. 2009
10.6113/JPE.2009.9.1.68


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 Abstract

Automotive inverters may require current sensors for motor torque control, especially, in application of hybrid electric vehicle or fuel cell vehicle. In this paper, to achieve a compact, integrated and low cost current sensor, a hall current sensor without magnetic core is introduced for integrating automotive inverter. The compactness of the current sensor is possible by using integrated magnetic concentrators based on hall effect. Magnetic fields caused by three-phase currents are analyzed and a design of magnetic shield is proposed for decoupling the cross-coupled field. It offers galvanic isolation, wide bandwidth(>100kHz), and accuracy(< 1%). Using 2D FEM analysis, its performance will be demonstrated with design parameters at a U-shaped magnetic shield. The proposed coreless current sensor is tested with rated current to validate the linearity and accuracy.


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Cite this article

[IEEE Style]

H. Kim, G. Kang, D. Nam, "Coreless Hall Current Sensor for Automotive Inverters Decoupling Cross-coupled Field," Journal of Power Electronics, vol. 9, no. 1, pp. 68-73, 2009. DOI: 10.6113/JPE.2009.9.1.68.

[ACM Style]

Ho-Gi Kim, Gu-Bae Kang, and Dong-Gin Nam. 2009. Coreless Hall Current Sensor for Automotive Inverters Decoupling Cross-coupled Field. Journal of Power Electronics, 9, 1, (2009), 68-73. DOI: 10.6113/JPE.2009.9.1.68.