Title :
The Spatial Effect and Compensation ofCurrent Sensor Differential Gains for Three-Phase Three-Wire Systems
Author :
Harke, Michael C. ; Lorenz, Robert D.
Author_Institution :
Appl. Res. Dept., Hamilton Sundstrand, Rockford, IL
Abstract :
Current sensor errors affect torque control and saliency-tracking position estimation of AC machines. In this paper, a spatial model of current sensor gain deviation is developed and used to determine its effect on general current measurement, verified with experimental data. Three current sensors enable a three-phase three-wire system to compensate for current sensor differential gains independent of additional machine saliencies. Simulation and experimental results confirm the current sensor gain-deviation compensation algorithm.
Keywords :
AC machines; compensation; electric current measurement; electric sensing devices; AC machine saliency-tracking position estimation; current measurement; current sensor differential gains; sensor gain-deviation compensation algorithm; spatial effect; three-phase three-wire systems; torque control; Circuits; Current measurement; Electronic equipment testing; Error correction; Gain measurement; Phase estimation; Sensor phenomena and characterization; Sensor systems; Sensor systems and applications; Torque control; Balanced polyphase current sensors; current sensor gain balancing; current sensor-induced torque ripple; current vector sensing; three phase current sensing;
Journal_Title :
Industry Applications, IEEE Transactions on
DOI :
10.1109/TIA.2008.926208
