Salvatore N., Cascella G.L., Caponio A., Stasi S., Neri F.
 

This paper appears in: Industrial Electronics, 2008. IECON 2008. 34th Annual Conference of IEEE
Issue Date: 10-13 Nov. 2008
On page(s): 1149 - 1154
Location: Orlando, FL
ISSN: 1553-572X
Print ISBN: 978-1-4244-1767-4
INSPEC Accession Number: 10415429
Digital Object Identifier: 10.1109/IECON.2008.4758116
Date of Current Version: 23 January 2009

ABSTRACT

This paper proposes a speed-sensorless stator field orientation control (SFOC) of IM drives based on a delayed-state Kalman filter (DSKF) optimally tuned with the differential evolution (DE) algorithm. The DSKF estimates the stator flux components in the stationary reference frame, using the derivatives of the stator flux components as mathematical model and the stator voltage equations as observation model. The DE algorithm gives the values of the covariance matrices of model and measurement errors to obtain optimal performance from the DSKF. The DE is a reliable and versatile function optimizer that has not yet been widely implemented in the field of electrical drives. It performs extremely well for the problem under analysis. The DE outperformed the best known GAs on proposed optimization problem. The paper investigates the responses to a load speed reversal as well as to a training test at low speed and the experiments show the low-speed performance of the sensorless control scheme using the new optimized DSKF.