Integrated current sensing for power electronic modules using GMR field detectors

Author

Oslon, E.R. ; Lorenz, R.D.

Author_Institution

Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI

fYear

2005

fDate

11-14 Sept. 2005

Abstract

The latest developments in point field detection for integrated current sensing are discussed. The effects that the skin-effect has on bandwidth and accuracy are explored. Numerical calculations and experimental measurements are performed on conductors with rectangular cross-sections. Point field measurements are made using giant magnetoresistive (GMR) field detectors, and are compared with results from numerical analyses. Two-dimensional finite element models demonstrate the tradeoff between flat measurement bandwidth and field strength as a function of frequency. Optimization functions are used to determine the best placement of the field detector for use as a current sensor

Keywords

conductors (electric); electric sensing devices; finite element analysis; giant magnetoresistance; power electronics; GMR field detectors; giant magnetoresistive; integrated current sensors; numerical calculations; point field measurements; power electronic modules; rectangular cross-sections; skin-effect; two-dimensional finite element models; Bandwidth; Conductors; Detectors; Finite element methods; Frequency measurement; Giant magnetoresistance; Magnetic field measurement; Numerical analysis; Performance evaluation; Power electronics; Giant Magnetoresistance; Integrated Current Sensing; Point-Filed Detecting; Power Module;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2005 European Conference on

Conference_Location

Dresden

Print_ISBN

90-75815-09-3

Type

conf

DOI

10.1109/EPE.2005.219449

Filename

1665639