Title :
Effects of Mismatched Parameters in MRAS Sensorless Doubly Fed Induction Machine Drives
Author :
Carmeli, Maria Stefania ; Castelli-Dezza, Francesco ; Iacchetti, Matteo ; Perini, Roberto
Author_Institution :
Dept. of Electr. Eng., Politec. di Milano, Milan, Italy
Abstract :
This paper deals with a performance analysis of sensorless drives based on doubly fed induction machines. A simplified model of the whole system equipped with a generic model reference adaptive system (MRAS) observer is introduced, by taking also into account a mismatch in the parameters. Three MRAS known in literature are analyzed in detail and meaningful analytic relations between the mismatched parameters and the error in the estimated rotor position during a steady-state operation are deduced. Then, a stability analysis is performed and the stability regions of each drive are found. Finally, the theoretical results are experimentally validated.
Keywords :
asynchronous machines; electric drives; observers; stability; MRAS observer; MRAS sensorless doubly fed induction machine drives; generic model reference adaptive system observer; mismatched parameter effect; rotor position estimation; stability analysis; steady-state operation; Induction machines; Inverters; Observers; Performance analysis; Rotors; Sensitivity analysis; Sensorless control; Stability analysis; State estimation; Steady-state; Doubly fed induction machine (DFIM); sensitivity analysis; sensorless drive; stability;
Journal_Title :
Power Electronics, IEEE Transactions on
DOI :
10.1109/TPEL.2010.2051163
