Articles (RICE)
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Item Postfault Operation Strategy for Cascaded H-Bridge Inverters Driving a Multiphase Motor(2024) Lopez, Oscar; Komrska, Tomáš; Alvarez, Jacobo; Adam, Lukáš; Yepes, Alejandro G.; Medina-Sánchez, Martin; Doval-Gandoy, JesusMultiphase motor drives based on a cascaded H-bridge (CHB) voltage source inverter (VSI) are suitable for fault-tolerant applications because a damaged H-bridge can be safely bypassed without interrupting the drive operation. This bypass has the effect of an undesired dc-link voltage shortage that multiphase motors can be effectively tolerated if appropriate x - y components are injected into the stator voltages. These degrees of freedom, which are not available in three-phase motors, permit to reach higher speeds without field weakening nor torque oscillations during the fault. However, no specific strategies exploiting this particular advantage of multilevel multiphase drives have been proposed so far, albeit resorting to strategies devised for three-phase VSIs would reduce the drive performance. This article proposes a postfault strategy for multiphase CHBs with bypassed H-bridges that better uses its dc link by injecting appropriate x - y components in the modulation reference signals, without altering the α - β ones. Experimental results, obtained with a five-level five-phase motor drive, show that the proposed strategy manages to run the motor at rated speed with negligible torque ripple when an H-bridge is bypassed. It is also recognized that the continuous operation in this situation requires using a circulating-current filter to mitigate the extra stator copper losses that arise.
Item Scalable, compact and easy-to-control linear electromagnetic actuator(2024) Tureček, Jakub; Kuthan, Jiří; Vítek, Martin; Juřík, Martin; Mach, FrantišekThe design of a compact and scalable linear electromagnetic actuator with spatially selective actuation and magnetic stabilization is presented. The concept is based on multi-layer coplanar coil topology, which operates rare-earth-based permanent magnet riders and takes advantage of all the parts formed by a printed circuit board (PCB). The paper presents the basic topology, rigid and flexible prototype design, spatially selective operation of multiple riders on one actuator and magnetic stabilization of the rider motion. The basic experimental verification of the first prototype is described by measuring actuation forces, load capacity, positioning precision and operation temperature. Spatially selective operation and stabilization are further analyzed based on motion analysis. With its potential applications in the precise manipulation of small loads and control of mechanisms, the actuator stands out in compact and scalable dimensions, low weight and inertia, ease of deployment, open-loop control, low manufacturing demands, material resistance, and durability.
Item Solving evolutionary problems using recurrent neural networks(Elsevier, 2023) Petrášová, Iveta; Karban, PavelItem Investigation of a bidirectional DC/DC converter with zero-voltage switching operation for battery interfaces(John Wiley and Sons, 2021) Bhajana, V.V.S. Kumar; Drábek, Pavel; Jára, Martin; Popuri, Madhuchandra; Iqbal, Atif; Babu, Chitti B.Item Energy Consumption Comparison of a Single Variable-Speed Pump and a System of Two Pumps: Variable-Speed and Fixed-Speed(MDPI, 2020) Oshurbekov, Safarbek; Kazakbaev, Vadim; Prakht, Vladimir; Dmitrievskii, Vladimir; Gevorkov, LevonItem Implementation of Digital Twins for electrical energy conversion systems in selected case studies(Estonian Academy Publishers, 2021) Rassölkin, Anton; Orosz, Tamás; Demidova, Galina Lvovna; Kuts, Vladimír; Rjabtšikov, Viktor; Vaimann, Toomas; Kallaste, AntsItem Hybrid steel–composite cross-arm for distribution power lines(Elsevier, 2023) Zemčík, Hana; Kroupa, Tomáš; Vaňková, Tereza; Zemčík, Robert; Pihera, Josef; Prosr, Pavel; Kadlec, Petr; Šroubová, Lenka; Müllerová, Eva; Martínek, Petr; Pavlica, Richard; Komárek, Josef; Friedl, Jan; Polanský, RadekItem Energy Consumption Optimisation of Emergency Shelters for Ukrainian War Refugees(European Association for the Development of Renewable Energies, Environment and Power Quality (EA4EPQ), 2023) Rubanenko, OlenaItem Simulation of electrical system protection against the effects of a magnetic storm(De Gruyter, 2023) Štork, Milan; Mayer, DanielItem Design and Operation Optimization of a Nuclear Heat-Driven District Cooling System(Hindawi, 2023) Abushamah, Hussein Abdulkareem Sale; Burian, Ondřej; Škoda, RadekItem Implementation of Digital Twin for Increasing Efficiency of Renewable Energy Sources(MDPI, 2023) Bělík, Milan; Rubanenko, OlenaItem Selective methane chemiresistive detection using MWCNTs array decorated by metal organic framework layer(Elsevier, 2023) Zabelin, Denis; Zabelina, Anna; Guselnikova, Olga; Miliutina, Elena; Kolská, Zdeňka; Štulík, Jiří; Polanský, Radek; Elashnikov, Roman; Kalachyova, Evgeniia; Švorčík, Václav; Lyutakov, OleksiyItem Global Simulation Model Design of Input-Serial, Output-Parallel Solid-State Transformer for Smart Grid Applications(MDPI, 2023) Takács, Kristián; Frivaldský, Michal; Kindl, Vladimír; Bernat, PetrItem Time-Optimal Current Control of Synchronous Motor Drives(MDPI, 2023) Šmídl, Václav; Glac, Antonín; Peroutka, ZdeněkItem Novel SMD Component and Module Interconnection and Encapsulation Technique for Textile Substrates Using 3D Printed Polymer Materials(MDPI, 2023) Kalaš, David; Soukup, Radek; Řeboun, Jan; Radouchová, Michaela; Rous, Pavel; Hamáček, AlešItem Fixed neutron absorbers for improved nuclear safety and better economics in nuclear fuel storage, transport and disposal(Korean Nuclear Society, 2023) Lovecký, Martin; Závorka, Jiří; Jiřičková, Jana; Ondráček, Z.; Škoda, RadekItem Metaverse and Healthcare: Machine Learning-Enabled Digital Twins of Cancer(MDPI, 2023) Moztarzadeh, Omid; Jamshidi, Mohammad; Sargolzaei, Saleh; Jamshidi, Alireza; Baghalipour, Nasimeh; Moghani, Malekzadeh Mona; Hauer, LukášItem Optimized protection coordination of microgrids considering power quality-based voltage indices incorporating optimal sizing and placement of fault current limiters(Elsevier, 2023) Azimi, Abolfazl; Hashemi Dezaki, HamedItem A Digital Twinning Approach for the Internet of Unmanned Electric Vehicles (IoUEVs) in the Metaverse(MDPI, 2023) Ebadpour, Mohsen; Jamshidi, Mohammad; Talla, Jakub; Hashemi Dezaki, Hamed; Peroutka, ZdeněkItem Dynamic Inductive Coupling Based Wireless Rotor Monitoring System(IEEE, 2023) Kindl, Vladimír; Elis, Luděk; Pušman, Lukáš; Turjanica, Pavel; Kavalír, Tomáš; Zavřel, Martin; Peroutka, Zdeněk
