Suppression of saturation saliency effects for the sensorlessposition control of induction motor drives under loaded conditions
Teske, N.; Asher, G.M.; Sumner, M.; Bradley, K.J.
Industrial Electronics, IEEE Transactions on
Volume 47, Issue 5, Oct 2000 Page(s):1142 - 1150
Digital Object Identifier 10.1109/41.873224
Summary:This paper presents an automated commissioning procedure used for
the elimination of the saturation saliency effects in the sensorless
position control of field-orientated cage induction motor drives. The
position control itself is based on extracting a rotor position estimate
from a high-frequency signal injection interacting with natural or
engineered rotor position saliencies within the machine. The paper shows
that this estimate cannot be robustly or accurately obtained if
saturation saliencies are present. The paper introduces a method for
suppressing the effects of the saturation saliency through information
gained in a prior commissioning procedure. The effectiveness of the
procedure is demonstrated through experimental results showing both good
suppression of the saturation harmonics and true sensorless position
control under high load torques
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