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 MRAS observer is introduced, by taking also into account a mismatch in the parameters. Three MRAS known in literature are analyzed into 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.
Effects of Mismatched Parameters in MRAS Sensorless Doubly Fed Induction Machine Drives
CARMELI, MARIA STEFANIA;CASTELLI DEZZA, FRANCESCO;IACCHETTI, MATTEO FELICE;PERINI, ROBERTO
2010-01-01
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 MRAS observer is introduced, by taking also into account a mismatch in the parameters. Three MRAS known in literature are analyzed into 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.File in questo prodotto:
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