Listar por autor "ec82ce84c15a74f2ad593fae5ae7909d"
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A Requirement Engineering Framework for Electric Motors Development
Rivera, Christian A.; Poza, Javier; Ugalde, Gaizka; Almandoz, Gaizka (MDPI AG, 2018)The applications using electric motors have increased in the last decade. Some of these applications encounter the need for tailor-made motors that must meet demanding requirements. Therefore, the specification stage of ... -
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. ... -
Automatic detection test of current sensor faults for induction motor drives at standstill
del-Olmo, Jon; Poza, Javier; Ugalde, Gaizka (IEEE, 2016)This paper proposes an automatic detection test of gain faults in current sensors. An offline test is applied when the machine is not operating. The designed test operates at standstill without being necessary to disconnect ... -
Design methodology for permanent magnet axial flux machines
Egea, Aritz (Mondragon Unibertsitatea. Goi Eskola Politeknikoa, 2012)In recent years, improving energy efficiency has become a primary concern in not only providing ecological benefits but also lowering operational costs. These benefits would then enable the creation of more attractive ... -
Effects of manufacturing tolerances of permanent magnets in fractional slot permanent magnet synchronous machines
Zárate Barriga, Sergio; Almandoz, Gaizka; Ugalde, Gaizka; Poza, Javier (IET, 2019)The fractional slot permanent magnet synchronous machines are well-known for their low torque ripple. However, in mass-production machines, not all the permanent magnets are identical due to the manufacturing tolerances ... -
Effects of Recycled Permanent Magnets on Electric Machine and Hybrid Electric Vehicle Performances
Ugalde, Gaizka; Garramiola, Fernando; Rivera, Christian A. (ASME, 2023)Permanent magnet price volatility is an ongoing issue that affects many industrial sectors worldwide, dictating the costs of the final product by a substantial degree. This fluctuation can be attributed to a large ... -
Experimental-Based model for Turn-to-Turn PDIV Prediction Dependent on Temperature
Elorza Azpiazu, Leire; Egea, Aritz; Almandoz, Gaizka; Ugalde, Gaizka; Sarasola, Izaskun (IEEE, 2024)Turn-to-turn insulation partial discharge inception voltage (PDIV) plays a crucial role in the design of the insulation system of inverter-fed motors for the automotive sector. This paper presents a turn-to-turn PDIV ... -
Field Weakening Characteristics Computed with FEM-Coupled Algorithms for Brushless AC Motors
Rivera, Christian A.; Almandoz, Gaizka; Ugalde, Gaizka; Poza, Javier (MDPI AG, 2018)Finite Element Method (FEM) analysis tools are the most adopted in the design of brushless alternating current motors due to the advantage of considering multi-physics effects with dependencies of variables such as ... -
High-Frequency Modelling of Electrical Machines for EMC Analysis
Moreno, Yerai; Egea, Aritz; Almandoz, Gaizka; Ugalde, Gaizka (MDPI, 2024)The trend towards electrification in mobility has led to the increased use of silicon carbide (SiC) semiconductors. These semiconductors are more efficient but also present challenges related to electromagnetic interference ... -
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 ... -
A Hybrid Sensor Fault Diagnosis for Maintenance in Railway Traction Drives
Garramiola, Fernando; Poza, Javier; Madina, Patxi; del-Olmo, Jon; Ugalde, Gaizka (MDPI AG, 2020)Due to the importance of sensors in railway traction drives availability, sensor fault diagnosis has become a key point in order tomove frompreventivemaintenance to condition-basedmaintenance. Most research works are limited ... -
Industrial Design of Electric Machines Supported with Knowledge-Based Engineering Systems
Rivera, Christian A.; Poza, Javier; Ugalde, Gaizka; Almandoz, Gaizka (MDPI, 2021)The demand for electric machines has increased in the last decade, mainly due to applications that try to make a full transition from fuel to electricity. These applications encounter the need for tailor-made electric ... -
Less Rare-Earth Electromagnetic Design for a High-Performance Permanent Magnet Motor
Rivera, Christian A.; Ugalde, Gaizka; Poza, Javier; Garramiola, Fernando; Badiola, Xabier (MDPI, 2022)This paper presents an electromagnetic design alternative using the so-called banana-shaped magnets, achieving magnet weight reduction of 21.82% for the same performance as the baseline motor in the case study. Typically, ... -
Linear Machines for Long Stroke Applications: a review
Eguren-Alustiza, Imanol; Almandoz, Gaizka; Egea, Aritz; Ugalde, Gaizka (IEEE, 2020)This document reviews the current state of the art in the linear machine technology. First,the recent advancements in linear induction, switched reluctance and permanent magnet machines arepresented. The ladder slit secondary ... -
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 ... -
Novel High Accuracy Resolver Topology for Space Applications
Santiso-Zelaia, Jon; Ugalde, Gaizka; Garramiola, Fernando; Iturbe, Ion; Sarasola, Izaskun (MDPI, 2021)In recent years, the space industry has experienced a significant change mainly due to the incursion of private companies, which has shaken up the sector. This new situation allows for a reduction regarding the reliability ... -
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 ...
