TY - JOUR
T1 - Improved method for the scalar control of induction motor drives
AU - Smith, Andrew
AU - Gadoue, Shady
AU - Armstrong, Matthew
AU - Finch, John
N1 - This paper is a postprint of a paper submitted to and accepted for publication in IET Electric Power Applications and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library
PY - 2013/8/2
Y1 - 2013/8/2
N2 - Many control schemes have been proposed for induction motors, which are in themselves highly complex non-linear and sometimes internally unstable systems.One of themost accurate control schemes is encodered rotor flux orientated vector control. The advantages and disadvantages of this control are well known and several variations, or reduced vector schemes, have been proposed. This study introduces an improved encoderless scalar, or approximated vector, control method for induction machines which can be applied to general purpose applications that do not require the most precise control. The proposed method overcomes practical difficulties and is suitable for industrial applications. The slip compensated stator flux linkage oriented scheme proposed in this study does not require flux estimation or a speed sensor, only requiring nameplate data, stator current and stator resistance measurement, which can easily be determined at start-up. Simulation and experimental investigations including field weakening operation and the effect of stator resistance variation demonstrate the improved performance of the new scheme compared to previous open loop V/Hz and stator resistive compensated schemes especially at low rotor speeds.
AB - Many control schemes have been proposed for induction motors, which are in themselves highly complex non-linear and sometimes internally unstable systems.One of themost accurate control schemes is encodered rotor flux orientated vector control. The advantages and disadvantages of this control are well known and several variations, or reduced vector schemes, have been proposed. This study introduces an improved encoderless scalar, or approximated vector, control method for induction machines which can be applied to general purpose applications that do not require the most precise control. The proposed method overcomes practical difficulties and is suitable for industrial applications. The slip compensated stator flux linkage oriented scheme proposed in this study does not require flux estimation or a speed sensor, only requiring nameplate data, stator current and stator resistance measurement, which can easily be determined at start-up. Simulation and experimental investigations including field weakening operation and the effect of stator resistance variation demonstrate the improved performance of the new scheme compared to previous open loop V/Hz and stator resistive compensated schemes especially at low rotor speeds.
UR - http://www.scopus.com/inward/record.url?scp=84880840491&partnerID=8YFLogxK
UR - https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2012.0384
U2 - 10.1049/iet-epa.2012.0384
DO - 10.1049/iet-epa.2012.0384
M3 - Article
AN - SCOPUS:84880840491
SN - 1751-8660
VL - 7
SP - 487
EP - 498
JO - IET Electric Power Applications
JF - IET Electric Power Applications
IS - 6
ER -