Garcia, A.; Rosero, J.; Cusido, J.; Romeral, L.; Ortega, J.A. IEEE transactions on energy conversion Vol. 25, num. 2, p. 312-318 DOI: 10.1109/TEC.2009.2037922 Data de publicació: 2010-06 Article en revista
This paper presents a novel method to diagnose demagnetization
in permanent-magnet synchronousmotor (PMSM).
Simulations have been performed by 2-D finite-element analysis in
order to determine the current spectrum and the magnetic flux
distribution due to this failure. The diagnostic just based on motor
current signature analysis can be confused by eccentricity failure
because the harmonic content is the same. Moreover, it can
only be applied under stationary conditions. In order to overcome
these drawbacks, a novel method is used based upon the
Hilbert–Huang transform. It represents time-dependent series in a
2-D time–frequency domain by extracting instantaneous frequency
components through an empirical-mode decomposition process.
This tool is applied by running the motor under nonstationary
conditions of velocity. The experimental results show the reliability
and feasibility of the methodology in order to diagnose the demagnetization
of a PMSM.
Romeral, L.; Rosero, J.; Garcia, A.; Cusido, J.; Ortega, J.A. IEEE aerospace and electronic systems magazine Vol. 25, num. 3, p. 4-9 DOI: 10.1109/MAES.2010.5463950 Data de publicació: 2010-03 Article en revista
Rosero, J.; Romeral, L.; Ortega, J.A.; Rosero, E. IEEE transactions on industrial electronics Vol. 56, num. 11, p. 4534-4547 DOI: 10.1109/TIE.2008.2011580 Data de publicació: 2009-11 Article en revista
Poncelas, O.; Rosero, J.; Cusido, J.; Ortega, J.A.; Romeral, L. IEEE transactions on industrial electronics Vol. 56, num. 10, p. 4062-4070 DOI: 10.1109/TIE.2009.2025715 Data de publicació: 2009-10 Article en revista
This paper presents a new approach for the current acquisition system in motor fault detection applications. This paper
includes the study, design, and implementation of a Rogowski coil current sensor without the integrator circuit that is typically used. The circuit includes an autotuning block able to adjust to different motor speeds. Equalizing the amplitudes of the fundamental and fault harmonics leads to higher precision current measurements.
The resulting compact sensor is used as a current probe for fault detection in induction motors through motor current signal
analysis. The use of a Rogowski coil without an integrator allows a better discrimination of the fault harmonics around the third and
fifth main harmonics. Finally, the adaptive conditioning circuit is tested over an induction machine drive. Results are presented, and quantitative comparisons are carried out.
Rosero, J.; Romeral, L.; Rosero, E.; Urresty, J. IEEE Applied Power Electronics Conference and Exposition p. 951-956 DOI: 10.1109/APEC.2009.4802777 Data de presentació: 2009-02 Presentació treball a congrés
This paper presents a study of the Permanent
Magnet Synchronous Machine (PMSM) running under bearing damage. To carry out the study a two-dimensional (2-D) Finite Element Analysis (FEA) is used. Stator current induced harmonics for fault condition were investigated. Advanced signal analysis by means of Continuous and Discrete Wavelet
Transforms was performed. Simulation were carried out and compared with experimental.
Rosero, J.; Ortega, J.A.; Urresty, J.; Cardenas, J.; Romeral, L. IEEE Applied Power Electronics Conference and Exposition p. 964-969 DOI: 10.1109/APEC.2009.4802779 Data de presentació: 2009 Presentació treball a congrés
This paper presents and analyzed short circuit failures for Permanent Magnet Synchronous Motor (PMSM). The study includes stated and dynamic condition for experimental and simulation test. The stator current is analyzed by means of higher order spectral analysis (HOSA). HOSA techniques are used for stator current analysis under stable conditions is power frequency spectrum density (PSD); and Multiple Signal Classification (MUSIC), and bispectrum are
used under dynamics conditions. Therefore, it is possible to improve the accuracy and efficiency of technique. Experimental
results validate the analysis and demonstrate for HOSA can be applied to detect and identify short circuit failures in
Urresty, J.; Riba, J.; Romeral, L.; Rosero, J.; Serna, J. IEEE International Symposium on Diagnostics for Electric Machines, Power Electronics and Drives p. 112-118 Data de presentació: 2009 Presentació treball a congrés
The latest advances in electric and electronic aircraft technologies from the point of view of an "all-electric" aircraft are presented herein. Specifically, we describe the concept of a "more electric aircraft" (MEA), which involves removing the need for on-engine hydraulic power generation and bleed air off-takes, and the increasing use of power electronics in the starter/generation system of the main engine. Removal of the engine hydraulic pumps requires fully-operative electrical power actuators and mastery of the flight control architecture. The paper presents a general overview of the electrical power generation system and electric drives for the MEA, with special regard to the flight controls. Some discussion regarding the interconnection of nodes and safety of buses and protocols in distributed systems is also presented.
Harry Rowe Mimno Award for the March 2007 AESS Magazine Paper: “Moving Towards A More Electric Aircraft”