Zerrendatu Kongresuak-Ingeniaritza honen arabera: egilea "3a053fa1aead5f2852530a4073109686"
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Analysis of non-uniform circumferential segmentation of magnets to reduce eddy-current losses in SPMSM machines
Madina, Patxi; Almandoz, Gaizka; Ugalde, Gaizka; Garcia Poza, Javier (IEEE, 2012)Eddy current losses generated in the rotor of the permanent magnet machines may lead to an excessive magnet heating. This can cause full demagnetization of the magnets so it is very important to analyze the losses on them ... -
Analytical model to calculate magnetic flux density in permanent magnet synchronous machines with static eccentricity
Gómez Serna, Iratxo; Almandoz, Gaizka; Zárate Barriga, Sergio; Poza, Javier; Ugalde, Gaizka (IEEE, 2016)In this article a general analytical model for the analysis of permanent magnet synchronous machines with static eccentricity is presented. The model is a continuation of [1] and it is based on Fourier time-space series ... -
Analytical model to calculate radial forces in permanent-magnet synchronous machines
Gómez Serna, Iratxo; Almandoz, Gaizka; Poza, Javier; Ugalde, Gaizka (IEEE, 2014)In permanent-magnet synchronous machines (PMSMs) electromagnetic forces are identified as the principal source of vibrations and noises. In this article, first of all the sources of magnetic forces in PMSMs are analyzed. ... -
DC-link sensor Fault Detection and isolation for railway traction electric drives
del-Olmo, Jon; Poza, Javier; Garramiola, Fernando; Almandoz, Gaizka (IEEE, 2017)This article presents the design and the implementation of a fault detection and isolation strategy for sensors in variable speed drives. Electric drives use several current and voltage sensors for control and protection. ... -
GaN Based Multiphasic Drive for Electric Vehicles
Almandoz, Gaizka (VDE Verlag, 2023)This paper presents the design of a six-phase two-level Voltage Source Inverter (VSI) using Gallium Nitride (GaN) semiconductors. The proposed topology consists of three full-bridge branches, where the GaN semiconductors ... -
High-Frequency Modelling of Windings
Moreno, Yerai; Egea, Aritz; Almandoz, Gaizka; Ugalde, Gaizka (IEEE, 2022)Electrical drives consume a great amount of the world’s energy, and this will keep increasing due to the electromobility trend. Hence, the efficiency of electrical drives must be improved to reach sustainability. Silicon ... -
Influence of Manufacturing Tolerances and Eccentricities on the Electromotive Force in Permanent Magnet Synchronous Motors
Galfarsoro, Unai; McCloskey, Alex; Zárate Barriga, Sergio; Almandoz, Gaizka (IEEE, 2022)Eccentricity is a common error in electric motors, so its diagnosis is an important issue. Therefore, the effect of static and dynamic eccentricities on the harmonics of the frequency spectra of the voltage of a phase is ... -
Influence of manufacturing tolerances and eccentricities on the unbalanced magnetic pull in permanent magnet synchronous motors
Galfarsoro, Unai; McCloskey, Alex; Zárate Barriga, Sergio; Almandoz, Gaizka (IEEE, 2020)Eccentricity is an inevitable fault in electric motors and hence its diagnosis is an important topic. Thus, the influence of static and dynamic eccentricities on the harmonics of the frequency spectra of the unbalanced ... -
Magnet eddy current loss calculation method for segmentation analysis on permanent magnet machines
Madina, Patxi; Poza, Javier; Almandoz, Gaizka; Ugalde, Gaizka (IEEE, 2011)Eddy current losses generated in the rotor of permanent magnet machines may lead to an excessive magnet heating. This can cause the magnets to get fully demagnetized so it is very important to analyze the losses on them. ... -
Methodology to Study Demagnetization Risk in Permanent Magnet Machines by Finite Element Method
Gómez Serna, Iratxo; Almandoz, Gaizka; Ugalde, Gaizka; Poza, Javier (IEEE, 2017)Nowadays the majority of applications are demanding more and more compact, cost effective and robust solutions for their electric drives. In this context permanent magnet synchronous machines are considered as a good ... -
Radial fan simulations by computational fluid dynamics and experimental validation
San Andrés Sanz, Unai; Almandoz, Gaizka; Poza, Javier; Ugalde, Gaizka (IEEE, 2014)Fans are commonly used to refrigerate electrical machines when air forced cooling is required. They are rather simple solutions that can considerably improve the thermal performance of electrical machines, so the fan ... -
Thermal test procedure and analytical model calibration method for electrical machines
San Andrés Sanz, Unai; Almandoz, Gaizka; Poza, Javier (IEEE, 2013)In this paper a thermal test procedure and a calibration method for lumped parameter models are presented. Analytical models provide fast thermal simulations in comparison with finite element methods (FEM) and computed ...