Conference Paper

# Identification of the Rotor Time Constant in Induction Machines without Speed Sensor

ECE Dept., Univ. of Tennessee, Knoxville, TN
DOI: 10.1109/IPEMC.2006.4778334 Conference: Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International, Volume: 3
Source: IEEE Xplore

ABSTRACT

A differential-algebraic method is used to estimate the rotor time constant TR of an induction motor without measurements of the rotor speed/position. The method consists of solving for the roots of a polynomial equation in TR whose coefficients depend only on the stator currents, stator voltages, and their derivatives. Experimental results are presented

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Available from: John Chiasson,
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• "Section V presents the experimental results, while Section VI gives the conclusions and future work. A preliminary version of this work appeared in [13]. "
##### Article: Speed Sensorless Identification of the Rotor Time Constant in Induction Machines
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ABSTRACT: A method is proposed to estimate the rotor time constant T<sub>R </sub> of an induction motor without measurements of the rotor speed/position. The method consists of solving for the roots of a polynomial equation in T<sub>R</sub> whose coefficients depend only on the stator currents, stator voltages, and their derivatives. Experimental results are presented
IEEE Transactions on Automatic Control 05/2007; 52(4-52):758 - 763. DOI:10.1109/TAC.2007.894548 · 2.78 Impact Factor
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##### Article: Optimizing simultaneously over the numerator and denominator polynomials in the Youla-Kucera parametrization
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ABSTRACT: Traditionally, when approaching controller design with the Youla-Kuc&caron;era parametrization of all stabilizing controllers, the denominator of the rational parameter is fixed to a given stable polynomial, and optimization is carried out over the numerator polynomial. In this note, we revisit this design technique, allowing to optimize simultaneously over the numerator and denominator polynomials. Stability of the denominator polynomial, as well as fixed-order controller design with H<sub>∞</sub> performance are ensured via the notion of a central polynomial and linear matrix inequality (LMI) conditions for polynomial positivity.
IEEE Transactions on Automatic Control 10/2005; 50(9-50):1369 - 1374. DOI:10.1109/TAC.2005.854618 · 2.78 Impact Factor
• ##### Article: Comments on “Optimizing Simultaneously Over the Numerator and Denominator Polynomials in the Youla-Kucera Parameterization”
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ABSTRACT: It is noted that the parameterization of the set of stabilizing regulators was first presented in a monograph by Larin V.B., Naumenko K.I., and Suntsev V.N
IEEE Transactions on Automatic Control 05/2007; 52(4-52):763 - 763. DOI:10.1109/TAC.2007.894546 · 2.78 Impact Factor