Negative Input-Resistance Compensator for a Constant Power Load
Xinyun Liu
Forsyth, A.J.
Cross, A.M.
Univ. of Manchester, Manchester;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Dec. 2007
Volume: 54,
Issue: 6
On page(s): 3188-3196
ISSN: 0278-0046
INSPEC Accession Number: 9692656
Digital Object Identifier: 10.1109/TIE.2007.896474
Current Version Published: 2007-11-12
Abstract
A negative input-resistance compensator is designed to stabilize a power electronic brushless dc motor drive with constant power-load characteristics. The strategy is to feed a portion of the changes in the dc-link voltage into the current control loop to modify the system input impedance in the midfrequency range and thereby to damp the input filter. The design process of the compensator and the selection of parameters are described. The impact of the compensator is examined on the motor-controller performance, and finally, the effectiveness of the controller is verified by simulation and experimental testing.
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