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7. Predictive Stator Current Control of a Five-Phase Motor Using a Hybrid Control Set

Author

Arahal, Manuel R., Barrero, Federico, Bermudez, Mario, and Satue, Manuel G.

Abstract

Finite state model predictive control (FSMPC) of multiphase drives can use an extra number of inverter configurations compared with the three-phase case. This, however, requires more computing power for the optimization phase. The application time of each selected voltage vector (VV) is then increased, which can result in higher harmonic content. Reducing the allowed VVs can speed up the computations, thus ameliorating the current tracking/regulation in different orthogonal subspaces. However, the flexibility offered by the reduced set of VVs is less than that of the full set. Furthermore, a lower sampling time can result in an increase in the switching frequency, especially for some speed-load combinations. This article proposes the use of a hybrid scheme where the set of allowed VVs is not fixed but rather selected on-line according to the actual speed and torque producing stator current which are computed by the outer loop. A five-phase induction machine (IM) is used as a test bed for the proposal, showing improved results with respect to the nonhybrid case.

Published
2023
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16. Viendo con mi cuerpo: una nueva comunicación con ejercicios de expresión corporal para población con discapacidad visual

Author

Pena Bermudez, Mario Andres, Sastoque Quinchanegua, Sandra Milena, Vargas Alarcon, Geraldine Viviana, and Covelli, Giovanni

Subjects
EXPRESION CORPORAL, DISCAPACIDAD, Expresión Corporal, Discapacidad Visual, Lenguaje escénico, METODOS DE ENSEÑANZA
Abstract

Adecuar ejercicios de Expresión Corporal para la implementación de cinco talleres que favorezcan la comunicación con personas en condición de Discapacidad Visual, asimismo tendrán la oportunidad de acercarse con el lenguaje escénico, en donde viven en inclusión desde la educación artística que se pueda generar también en la educación general. También servirá como base para futuros trabajos investigativos que quieran abordar el tema de la discapacidad, permitiendo mitigar los imaginarios que las personas videntes tienen al creer que una persona invidente y de baja visión no puedan tener las habilidades para expresar a través de las artes escénicas. De igual forma, será un material accesible a los futuros docentes para fortalecer su capacidad a la hora de enfrentarse a la población con discapacidad visual.

Published
2015

20. Genotype and allele frequencies of polymorphic cytochromes P450 CYP1A2 and CYP2E1 in Mexicans.

Author

Mendoza-Cantú A, Castorena-Torres F, Bermudez M, Martínez-Hernández R, Ortega A, Salinas JE, and Albores A

Subjects
Adolescent, Adult, Female, Humans, Male, Mexico, Middle Aged, Mutation, Polymerase Chain Reaction, Cytochrome P-450 CYP1A2 genetics, Cytochrome P-450 CYP2E1 genetics, Gene Frequency, Genotype, Polymorphism, Restriction Fragment Length
Abstract

CYP1A2 and CYP2E1 are two of the main cytochrome P450 isoforms involved in the metabolism of commonly used drugs and xenobiotic compounds considered to be responsible for or possible participants in the development of several human diseases. Individual susceptibility to developing these pathologies relies, among other factors, on genetic polymorphism which depends on ethnic differences, as the frequency of mutant genotypes varies in different human populations. Thus the aim of this study was to investigate the frequency of CYP1A2 5'-flanking region and CYP2E1 Rsa I/Pst I polymorphisms in Mexicans by PCR-RFLP methods. The DNA of 159 subjects was analysed and mutant allele frequencies of 30% for CYP2E1 Rsa I/Pst I sites and 43% for CYP1A2 5'-flanking region were found. These frequencies are higher than those previously reported for other human populations., (Copyright 2003 John Wiley & Sons, Ltd.)

Published
2004
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