Dynamic Performance of Estimator-Based Speed Sensorless Control of Induction Machines using Extended and Unscented Kalman Filters
Journal Title: Power Electronics and Drives - Year 2018, Vol 2018, Issue 1
Abstract
This paper presents an estimator-based speed sensorless field oriented control (FOC) method for induction machines, where the state estimator is based on a self-contained, non-linear model. This model characterizes both the electrical and the mechanical behaviors of the machine and describes them with seven state variables. The state variables are estimated from the measured stator currents and from the known stator voltages using the observer. An important aspect is that one of the state variables is the load torque and hence it is also estimated by the estimator. Using this feature, the applied estimator-based speed sensorless control algorithm may be operated adequately besides varying load torque. In this work, two different variants of the control algorithm are developed based on the extended and the unscented Kalman filters (EKF, UKF) as state estimators. Dynamic performance of these variants are tested and compared by experiments and simulations. Results show that the variants have comparable performance in general, but the UKF-based control provides better performance if a stochastically varying load disturbance is present.
Authors and Affiliations
Krisztián Horváth, Márton Kuslits
Keywords
Related Articles
- EP ID EP408054
- DOI 10.2478/pead-2018-0003
- Views 89
- Downloads 0
FILTERED INTEGRAL SLIDING MODE CONTROL IN TWO-MASS DRIVE SYSTEM
Background The paper presents issues related to Filtered Integral Sliding Mode Control for a two-mass system drive. A comparison between common classical and filtered Integral Sliding Mode Control is carried out. The pro...
Introduction to the Special Section on State and Parameter Estimation Methods for Sensorless Drives
This short article constitutes an introductory part the Special Section on State and Parameter Estimation Methods in Sensorless Drives. In the current issue of the journal the first part of this Section is published. Acc...
Effects of the grid disturbances on Current Source Rectifier controlled by FCS-MPC algorithm
Nowadays, the increasing number of nonlinear loads influence the grid causing grid voltage disturbances. Those disturbances may be very dangerous for the equipment and can create faults in converters behavior. However, t...
Hybrid MPPT algorithm for PV systems under partially shaded conditions using a stochastic evolutionary search and a deterministic hill climbing
This paper proposes a hybrid maximum power point tracking method for the photovoltaic system using a stochastic evolutionary search and a deterministic hill climbing algorithm. The proposed approach employs the particle...
STATOR WINDING INTER-TURN SHORT-CIRCUIT MODELLING OF A SQUIRREL-CAGE INDUCTION MOTOR
Background: A mathematical model of a squirrel-cage induction motor with inter-turn short-circuits in stator phases is presented in this paper. Material and methods: In the proposed mathematical model an extent and angul...