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Journal > TELKOMNIKA Indonesian Journal of Electrical Engineering > Comparison of Estimated Torques Using Low Pass Filter and Extended Kalman Filter for IM Drives at Low Speed

 

TELKOMNIKA Indonesian Journal of Electrical Engineering
Vol 14, No 1: April 2015
Comparison of Estimated Torques Using Low Pass Filter and Extended Kalman Filter for IM Drives at Low Speed
Article Info   ABSTRACT
Published date:
21 Jan 2015
 
Torque calculation process is one of the major concerns for controlling induction motors in industry, which requires very accurate state estimation of unmeasurable variables of nonlinear models. This can be solved if the variables used for torque calculation is accurately estimated.  This paper presents a torque calculation based on a voltage model represented with a low-pass filter (LPF), and an extended Kalman filter (EKF). The experimental results showed that the estimated torque at low speed based on EKF is more accurate in the expense of more complicated and larger computational time.
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