Salvatore N., Cascella G.L., Dell'Aquila A., Stasi S.
 

This paper appears in: Power Electronics, Electrical Drives, Automation and Motion, 2008. SPEEDAM 2008. International Symposium on
Issue Date: 11-13 June 2008
On page(s): 96 - 100
Location: Ischia
Print ISBN: 978-1-4244-1663-9
INSPEC Accession Number: 10140830
Digital Object Identifier: 10.1109/SPEEDHAM.2008.4581106
Date of Current Version: 29 July 2008

ABSTRACT

This paper proposes a stator flux oriented (SFO) control scheme of induction motors using variable-saturation regulators. The traditional SFO control scheme consists in the d-axis current component, torque, stator flux, and speed loops with four PI-type controllers. The proposed control scheme uses two regulators with variable-saturation in such a way that maximum dc-bus voltage utilization is reached and overcurrent problems are prevented. The experiments are carried out using dSpace digital controllers and show that the SFO control scheme, using variable-saturation regulators, guarantees the best dynamic performance in the field-weakening region with maximum dc-bus voltage utilization and without current overshoot.