A compact planar Rogowski coil current sensor for active current balancing of parallel-connected Silicon Carbide MOSFETs

Author

Yang Xue ; Junjie Lu ; Zhiqiang Wang ; Tolbert, Leon M. ; Blalock, Benjamin J. ; Wang, F.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Univ. of Tennessee, Knoxville, TN, USA

fYear

2014

fDate

14-18 Sept. 2014

Firstpage

4685

Lastpage

4690

Abstract

In this paper, a compact planar current sensor is developed to be used in active current balancing applications for parallel-connected Silicon Carbide (SiC) MOSFETs. The designed Rogowski coil allows non-intrusive current measurement with low profile, compact size, and high bandwidth. The sensor circuit design extends both lower and higher cutoff frequency of the sensor, and allows a continuous measurement of current waveforms that contain a DC component. The simulated bandwidth of the proposed current sensor is 2.66 Hz-100 MHz. The measured switching waveforms in the experiment are comparable to a 120 MHz commercial current probe.

Keywords

MOSFET; coils; electric current measurement; electric sensing devices; silicon compounds; wide band gap semiconductors; DC component; SiC; active current balancing application; compact planar Rogowski coil current sensor; current waveform measurement; frequency 120 MHz; frequency 2.66 Hz to 100 MHz; nonintrusive current measurement; parallel-connected silicon carbide MOSFET; switching waveform measurement; Accuracy; Bandwidth; Coils; Conductors; Current measurement; Sensors; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2014 IEEE

Conference_Location

Pittsburgh, PA

Type

conf

DOI

10.1109/ECCE.2014.6954042

Filename

6954042