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A speed sensorless control based on a MRAS applied to a double fed induction machine drive

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Abstract

This paper proposes a new MRAS method to estimate the mechanical quantities in a double fed induction machine. In the traditional formulation the integral term, introduced by the PI MRAS regulator, is canceled in the transfer function between the estimated and the real speed. As a novelty, an additional term depending on the reference rotor flux through a constant gain g is introduced in the adjustable model of the MRAS. This innovation restores the integral term in the transfer function. As a consequence, during the closed loop operation, the estimated speed does not exhibit anymore a steady state error. The influence of the inverter non-linearities and of the non-linear rotor brush resistance on the speed estimation is also discussed. Some experimental tests validate the proposed method.

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Authors and Affiliations

  1. Department of Electrical Engineering, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133, Milan, Italy

    Matteo Felice Iacchetti, M. S. Carmeli, Francesco Castelli Dezza & R. Perini

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  1. Matteo Felice Iacchetti
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  2. M. S. Carmeli
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  3. Francesco Castelli Dezza
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  4. R. Perini
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Correspondence to Matteo Felice Iacchetti.

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Iacchetti, M.F., Carmeli, M.S., Castelli Dezza, F. et al. A speed sensorless control based on a MRAS applied to a double fed induction machine drive. Electr Eng 91, 337–345 (2010). https://doi.org/10.1007/s00202-009-0144-8

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  • DOI: https://doi.org/10.1007/s00202-009-0144-8

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