Reduction of Torque Ripple in Direct Torque Control for Induction Motor Drives Using Decoupled Amplitude and Angle of Stator Flux Control
| Paper File | Download Paper File | | Appear In | ECTI Transaction EEC (ECTI Transaction EEC) | | Publication Date | 01/08/2010 - 31/08/2010 | | Volume | 8 | | Pages | 187 - 196 | | No | 2 | | Author 1 | Yuttana Kumsuwan | | Author 2 | Watcharin Srirattanawichaikul | | Author 3 | Suttichai Premrudeepreechacharn |
Abstract
This paper proposes design and implementation of
a direct torque controlled induction motor drive sys-
tem. The method is based on decouple control of the
amplitude and the angle of the stator °ux reference
for determining the reference stator voltage vector in
generating the PWM output voltage for induction
motors. The objective is to reduce electromagnetic
torque ripple and stator °ux droop which result in a
decrease in current distortion at steady state. The
proposed technique is based on the relationship be-
tween the instantaneous slip angular frequency and
rotor angular frequency in adjustment of the stator
°ux angle reference. The amplitude of the reference
stator °ux is always kept constant at rated value. The
system has been implemented to verify its capability
such as torque and stator °ux responses, stator phase
current distortion both during dynamic and steady
state with load variation, and low speed operation |
