• 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • 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 ...
    • Study of Partial Discharge Inception Voltage in Inverter Fed Electric Motor Insulation Systems 

      Elorza Azpiazu, Leire; Almandoz, Gaizka; Egea, Aritz; Ugalde, Gaizka; Badiola, Xabier (MDPI, 2023)
      This article performs a thorough evaluation of different environmental and electrical waveform characteristics affecting PDIV on electric motor winding insulation. Temperature received special attention, as it clearly ...