A Compact Planar Rogowski Coil Current Sensor For Active Current Balancing Of Parallel-Connected Silicon Carbide Mosfets
Energy Conversion Congress and Exposition（2014）
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.
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Key words
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
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