NDLI: High frequency modeling of current sensors

Content Provider	IEEE Xplore Digital Library
Author	Pankau, J. Leggate, D. Schlegel, D. Kerkman, R. Skibiniski, G.
Copyright Year	1999
Description	Author affiliation: Standard Drives Div., Rockwell Autom., Mequon, WI, USA (Pankau, J.)
Abstract	Reflected wave transient voltages that result from fast insulated gate bipolar transistor voltage source inverters have received considerable investigation. Modeling, simulation, and attenuation of these transients require sophisticated motor and cable models. Most drive suppliers now provide combinations of passive and active solutions to mitigate the adverse effects of overvoltage stress, however, the cost of the passive solutions often exceed the cost of the drive. Another aspect of low rise time devices, not examined to the extent of the overvoltage problem, is the resulting current from traveling waves. Current sensor fidelity limits the ability of modern drives to detect peak current and can result in current feedback distortion. This paper presents research into the response, modeling, and construction of Hall effect current sensors. Models for Hall current sensors are introduced and compared. Experimental and simulation results demonstrate the complexity of the common current sensors employed in modern adjustable speed drives. A comparison of the sensor response and the model's prediction demonstrates the difficulty associated with accurate current detection. Finally, the paper presents design guidelines to reduce the corrupting influence of high frequency differential and common mode currents.
Starting Page	788
Ending Page	794
File Size	626181
Page Count	7
File Format	PDF
ISBN	0780351606
DOI	10.1109/APEC.1999.750458
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-03-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency Voltage control Costs Insulated gate bipolar transistors Inverters Attenuation Stress Drives Feedback Hall effect
Content Type	Text
Resource Type	Article

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