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 84
- Downloads 0
VERTICAL TRANSPORTATION: HARMONICS EFFECTS OF DRIVES BY PM MACHINES
Motor drive is a widely used technology, offering many advantages, such as exceptional speed, torque control as well as greater flexibility. Improvement of reliability and efficiency has become a great research interest....
Comparative Stability Analysis of Stator Current Error-Based Estimators of the Induction Motor Speed
This paper deals with the stability problem of three stator current error-based estimators of the induction motor speed, especially in the regenerating operation mode. The stability of the Adaptive Full-order Observer (A...
Rotor fault compensation and detection in the sensorless induction motor drive
Background The sensorless induction motor drive systems require the rotor speed estimation. When the rotor of induction motor is broken the rotor resistance value is different than the nominal value. Because, all of the...
A Very Low Speed Sensorless Control Induction Motor Drive with Online Rotor Resistance Using MRAS Scheme
In this paper, a sensorless indirect stator flux oriented control (ISFOC) induction Motor drive at very low frequencies is presented. The Model Reference Adaptive System (MRAS) scheme is used to estimate Simultaneously t...
PERFORMANCE OF SENSORLESS CONTROL OF PERMANENT MAGNET SYNCHRONOUS GENERATOR IN WIND TURBINE SYSTEM
Background: The article presents the sensorless control of permanent magnet synchronous generator (PMSG) in the variable speed wind energy conversion system. The considered system of wind turbine consists of PMSG and bac...