Comparative Stability Analysis of Stator Current Error-Based Estimators of the Induction Motor Speed
Journal Title: Power Electronics and Drives - Year 2018, Vol 2018, Issue 1
Abstract
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 (AFO) and two Model Reference Adaptive System (MRAS) based on stator current error (MRASCC and MRASCV) is briefly analysed and the stability boarders are determined and compared. It is shown, that MRASCV speed estimator is stable in the whole operation range including the regenerating mode. The stability enhancement method for AFO and MRASCC estimators is described and solution for their stability improvement is proposed. Torque-speed characteristics of the analysed MRAS-type estimators in a wide range of drive speed and load torque changes are given as well as the behaviour of estimators during transients is compared. The theoretical analysis and simulation test results are validated by experimental tests.
Authors and Affiliations
Mateusz Korzonek, Teresa Orłowska-Kowalska
Keywords
Related Articles
- EP ID EP408062
- DOI 10.2478/pead-2018-0010
- Views 62
- Downloads 0
FINITE-ELEMENT ANALYSIS OF ACCIDENTAL ENERGIZING OF AN OFF-LINE TURBOGENERATOR
Background: Presented article shows the computation results of accidental off-line turbogenerator energizing. Inadvertent energizing of turbogenerator has been a particular issue in the power plant. The investigated case...
COMPENSATION METHODS OF CURRENT AND SPEED SENSORS FAULTS FOR VECTOR CONTROLLED INDUCTION MOTOR DRIVE SYSTEM
Background: In the paper the chosen speed and current sensor faults detectors for vector controlled induction motor drive system are presented and described. Systems based on the artificial intelligence (neural network)...
Physical phenomena existing in the turbogenerator during faulty synchronization with inverse phase sequence
Background: Electrical machines Material and methods: Finite element method Results: The great emphasis is placed on the physical phenomena existing the rotor because the measurement of rotor damper bar currents is diffi...
The desctiption of turn-off process and evaluation of switching power losses in the ultra fast power MOSFET
Background: The article provides a detailed analytical description of the turn-off process in a high-voltage power MOSFET, with nonlinear junction capacity. With the use of a gate circuit with a low resistance and consid...
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...