Browsing by Author "3a053fa1aead5f2852530a4073109686"
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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 ... -
A Review in Fault Diagnosis and Health Assessment for Railway Traction Drives
Garramiola, Fernando; Madina, Patxi; Andrade del Olmo, Jon; Almandoz, Gaizka (MDPI AG, 2018)During the last decade, due to the increasing importance of reliability and availability, railway industry is making greater use of fault diagnosis approaches for early fault detection, as well as Condition-based maintenance ... -
Adoption of Multiphase and Variable Flux Motors in Automotive Applications
Arribas Imaz, Beñat; Almandoz, Gaizka; Egea, Aritz; Madina, Patxi; Iturbe, Ion (MDPI, 2024)This paper investigates the incorporation of multiphase (MP) and variable flux (VF) permanent magnet motors to electric vehicles (EVs). A literature review is carried out first, which covers the characteristics, benefits ... -
Analysis of Multiphase Permanent Magnet Motors via Space-Harmonic Model
Arribas Imaz, Beñat; Almandoz, Gaizka; Egea, Aritz; Poza, Javier; Iturbe, Ion (IEEE, 2024)Multiphase permanent magnet motors are gaining popularity thanks to their advantages, which include reduced torque ripple, enhanced torque capability, and fault tolerance. However, their modelling and control is more ... -
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 ... -
Analysis of Permanent Magnet Motors in High Frequency: A Review
Moreno, Yerai; Almandoz, Gaizka; Egea, Aritz; Arribas Imaz, Beñat (MDPI, 2021)Electric drives consume a great amount of the world’s energy, and it will keep increasing due to the electromobility trend. Thus, the efficiency of electric drives must be improved to reach the desired sustainability goal. ... -
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
McCloskey, Alex; Almandoz, Gaizka (MDPI, 2021)There are three principal sources of noise and vibration in electrical machines: electromagnetic sources, mechanical sources, and aerodynamic sources. Nowadays, one of the major advantages of permanent-magnet synchronous ... -
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. ... -
Comparison of impedance spectroscopy and partial discharge analysis as insulation health diagnosis techniques
Elorza Azpiazu, Leire; Moreno, Yerai; Egea, Aritz; Almandoz, Gaizka; Angulo, Ainara (IEEE, 2024)The ageing of insulation systems in electric machines can compromise partial discharge-free designs. Regularly monitoring insulation health is crucial to prevent unexpected failures. Several authors have proposed health ... -
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. ... -
DC-Link Voltage and Catenary Current Sensors Fault Reconstruction for Railway Traction Drives
Garramiola, Fernando; del-Olmo, Jon; Poza, Javier; Madina, Patxi; Almandoz, Gaizka (MDPI AG, 2018)Due to the importance of sensors in control strategy and safety, early detection of faults in sensors has become a key point to improve the availability of railway traction drives. The presented sensor fault reconstruction ... -
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 ... -
Development of a Thermal Analysis Tool for Linear Machines
Eguren-Alustiza, Imanol; Almandoz, Gaizka; Egea, Aritz; Elorza Azpiazu, Leire (MDPI, 2021)The thermal design is one of the most important stages in the design process of electrical machines. Thanks to software packages, like Motor-CAD, rotating machine designers can predict the thermal operation of the machines ... -
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 ... -
EMI simulation of permanent magnet motor drive systems
Moreno, Yerai; Almandoz, Gaizka; Egea, Aritz; Eguren-Alustiza, Imanol (IEEE, 2024)With an increasing emphasis on energy efficiency and the widespread adoption of Wide-Band-Gap (WBG) devices, understanding and mitigating EMI is crucial for the reliability and performance of electric drives. This research ... -
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 ... -
Fast finite element based vibration response calculation procedure for permanent magnet synchronous machines
Mendizabal, Mikel; McCloskey, Alex; Zárate Barriga, Sergio; Poza, Javier; Almandoz, Gaizka (IEEE, 2024)The vibration of the stator frame due to electromagnetic forces is one of the main noise and vibration sources of electric machines. In some applications, due to the wide variety of working conditions, magnetic circuit ... -
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 ... -
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 ...
