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Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 20 z 44
Bhajana, V.V.S. Kumar , Drábek, Pavel , Jára, Martin , Popuri, Madhuchandra , Iqbal, Atif , Babu, Chitti B.
Investigation of a bidirectional DC/DC converter with zero-voltage switching operation for battery interfaces

This paper proposes a bidirectional DC–DC converter with soft-switching capabilities. The main characteristic of this converter is that it can be operated in both boost and buck modes. The major advantages of this converter are high efficiency and reduced switching loss in high-power&#x...

Šmídl, Václav , Glac, Antonín , Peroutka, Zdeněk
Time-Optimal Current Control of Synchronous Motor Drives

We are concerned with the problem of fast and accurate tracking of currents in the general synchronous drive. The problem becomes complicated with decreasing available voltage, which is common in high-speed and field weakening regimes. The existing time-optimal controllers rely on a sim...

Takács, Kristián , Frivaldský, Michal , Kindl, Vladimír , Bernat, Petr
Global Simulation Model Design of Input-Serial, Output-Parallel Solid-State Transformer for Smart Grid Applications

This paper provides an overview of an early attempt at developing a simulation model on a solid-state transformer (SST) based on input-serial and output-parallel (ISOP) topology. The proposed SST is designed as a base for a smart grid (SG). The paper provides a theoretical rev...

Daneshfar, Fatemeh , Jamshidi, Mohammad
An octonion-based nonlinear echo state network for speech emotion recognition in Metaverse

While the Metaverse is becoming a popular trend and drawing much attention from academia, society, and businesses, processing cores used in its infrastructures need to be improved, particularly in terms of signal processing and pattern recognition. Accordingly, the speech emotion recognition ...

Moztarzadeh, Omid , Jamshidi, Mohammad , Sargolzaei, Saleh , Jamshidi, Alireza , Baghalipour, Nasimeh , Moghani, Malekzadeh Mona , Hauer, Lukáš
Metaverse and Healthcare: Machine Learning-Enabled Digital Twins of Cancer

Medical digital twins, which represent medical assets, play a crucial role in connecting the physical world to the metaverse, enabling patients to access virtual medical services and experience immersive interactions with the real world. One serious disease that can be diagnosed and tre...

Ebadpour, Mohsen , Jamshidi, Mohammad , Talla, Jakub , Hashemi Dezaki, Hamed , Peroutka, Zdeněk
A Digital Twinning Approach for the Internet of Unmanned Electric Vehicles (IoUEVs) in the Metaverse

Regarding the importance of the Internet of Things (IoT) and the Metaverse as two practical emerging technologies to enhance the digitalization of public transportation systems, this article introduces an approach for he improvement of IoT and unmanned electric vehicles in the Metaverse,...

Kindl, Vladimír , Elis, Luděk , Pušman, Lukáš , Turjanica, Pavel , Kavalír, Tomáš , Zavřel, Martin , Peroutka, Zdeněk
Dynamic Inductive Coupling Based Wireless Rotor Monitoring System

The paper presents a new technology and design methodology of dynamic inductive coupling based wireless power transmission intended for the real-time measurement of rotor characteristics of electrical machines. The technology is based on dynamic inductive power transmission using three series-connecte...

Koniar, Dušan , Klčo, Peter , Hargaš, Libor , Chnápko, Marek , Pocisková Dimová, Katarína , Kindl, Vladimír
Increase of the Automotive Power Transistor Modules Manufacture Reliability Using Ai Detecting System for Soldering Splashes

This study discusses the automated visual inspection of electronic boards used in the mass production of power electronics equipment. Soldering splashes, produced during the necessary manufacturing stages, can affect the hybrid power semiconductor modules' quality, specifications and lifespan. Splashes...

Khalaj, Omid , Jamshidi, Mohammad , Hassas, Parsa , Hosseininezhad, Marziyeh , Mašek, Bohuslav , Štádler, Ctibor , Svoboda, Jiří
Metaverse and AI Digital Twinning of 42SiCr Steel Alloys

Digital twins are the most important parts of Cyber-Physical Systems (CPSs), and play a crucial role in the realization of the Metaverse. Therefore, two important factors: flexibility and adaptability, need to be focused on digital twinning systems. From a virtual perspective, constructing&#...

Jamshidi, Mohammad , Yahya, Salah I. , Nouri, Leila , Hashemi Dezaki, Hamed , Rezaei, Abbas , Chaudhary, Akmal
A Super-Efficient GSM Triplexer for 5G-Enabled IoT in Sustainable Smart Grid Edge Computing and the Metaverse

Global concerns regarding environmental preservation and energy sustainability have emerged due to the various impacts of constantly increasing energy demands and climate changes. With advancements in smart grid, edge computing, and Metaverse-based technologies, it has become apparent that conventional...

Weinzettl, Vladimír , Bílková, Petra , Ďuran, Ivan , Hron, Martin , Pánek, Radomír , Markovič, Tomáš , Varavin, Mykyta , Cavalier, Jordan , Kovařík, Karel , Torres, André , Matveeva, Ekaterina , Böhm, Petr , Ficker, Ondřej , Horáček, Jan , Čeřovský, Jaroslav , Zajac, Jaromír , Adámek, Jiří , Dimitrova, Miglena , Imríšek, Martin , Sos, Miroslav , Tomešová, Eva , Vondráček, Petr , Mikszuta-Michalik, Katarzyna , Svoboda, Jakub , Naydenkova, Diana , Bogár, Klára , Caloud, Jakub , Ivanov, Vladislav , Lukeš, Samuel , Podolník, Aleš , Bogár, Ondřej , Entler, Slavomír , Havránek, Aleš , Preinhaelter, Josef , Jaulmes, Fabien , Dejarnac, Renaud , Balner, Vojtěch , Veselovský, Viktor , Bělina, Pavel , Král, Miroslav , Gerardin, Jonathan , Vlček, Jiří , Tadros, Momtaz , Turjanica, Pavel , Kindl, Vladimír , Řeboun, Jan , Rowan, William , Houshmandyar, Saeid , Scholz, Marek , Bielecki, Jakub , Makowski, Dariusz , Chernyshova, Maryna , Cipciar, Dario
Development of the diagnostic tools for the COMPASS-U tokamak and plans for the first plasma

The COMPASS-U tokamak (R = 0.894 m, a = 0.27 m, Bt = 5 T, Ip = 2 MA) is a new medium-size device with fully metallic plasma facing components, currently under construction at the Institute of Plasma Physics of the Czech Academy of Sciences in Prague. It fea...

Dragoun, Jaroslav , Vinš, Martin , Talla, Jakub , Blahník, Vojtěch
Droop Control Algorithm Design for Power Balancing in Island Inverter Based Microgrid

In this article, a droop control algorithm is proposed for power distribution between sources in an island inverter-based microgrid without common central control. The analyses of the line impedance influence (resistive, inductive, and combined) are provided to show the impact on the po...

Kalaj, Patrik , Komrska, Tomáš , Kindl, Vladimír , Čermák, Radek , Frank, Zdeněk , Laksar, Jan , Peroutka, Zdeněk
Multi-Pole Winding Behavior in Multiphase Motors under Current Harmonics Operation

Multiphase machines can be operated in interesting operation modes which are not possible when using their three-phase counterparts. Besides fault-tolerant and multimotor operation, torque enhancement by injecting harmonic currents is another of their very important properties. Torque enhancement by i...

Bhajana, V.V.Subrahman. Kumar , Drábek, Pavel , Jára, Martin , Peroutka, Zdeněk
Comparison of main design concepts of auxiliary drives for DC catenary fed light traction vehicles: SiC JFET vs Si IGBT technology

This paper presents a comparison of prospective design concepts of DC/DC isolated converters for auxiliary drives of DC catenary fed light traction vehicles. Auxiliary drives are mostly dedicated to generate standard power grid supplying various on-board equipment and to charge on-board ...

Kindl, Vladimír , Sobotka, Lukáš , Frivaldský, Michal , Skalický, Martin
Analytical Method for Designing Three-Phase Air-Gapped Compensation Choke

The compensating choke plays an important role in many high-power industrial applications with reactive power compensation. Due to the high number of devices installed every year and the EU’s efforts to reduce the energy demands of our society, it is advisable to maximize the ...

Nemat Saberi, Alireza , Belahcen, Anouar , Šobra, Jan , Vaimann, Toomas
LightGBM-Based Fault Diagnosis of Rotating Machinery Under Changing Working Conditions Using Modified Recursive Feature Elimination

his article presents an intelligent and accurate framework for fault diagnosis of induction motors using light gradient boosting machine (LightGBM). The proposed framework offers promising generalization ability when the testing data contains new unseen operating conditions unavailable during the trai...

Billah, Md Masum , Martin, Floran , Belahcen, Anouar , Balasubramanian, Aswin , Vaimann, Toomas , Šobra, Jan
Uncertainty Quantification of Input Parameters in a 2-D Finite-Element Model for Broken Rotor Bar in an Induction Machine

In this article, a forward uncertainty propagation method is presented for a 2-D finite-element (FE) model in an induction machine. This method is applied to quantify the uncertainty of input parameters, for example, dimensions and material properties, and demonstrate their variability effec...

Kindl, Vladimír , Skala, Bohumil , Frivaldský, Michal
Analytical Method for Compensation Choke Geometry Optimization to Minimize Losses

The article presents an analytical method for optimizing the geometry of the magnetic core of a three-phase compensation choke. The method describes the process of identification the fringing magnetic fields and the corresponding magnetic reluctances of the magnetic core, the flux density&#x...

Ševčík, Jakub , Přikryl, Jan , Peroutka, Zdeněk
In-motion charged vehicle simulation considering traffic and power grid interactions

When designing new electric vehicles for urban transport, both vehicle producers and operators need to establish and verify requirements that the vehicle has to fulfil regarding, e.g., energy storage capacity, driving range, or battery wear. These requirements are typically verified using si...

Abazov, V. M. , Georgiev, Vjačeslav , Hammerbauer, Jiří , Linhart, Richard , Peroutka, Zdeněk , Urban, Ondřej , Vavroch, Ondřej , Zich, Jan , D0, Collaboration , TOTEM, Collaboration
Odderon Exchange from Elastic Scattering Differences between pp and p¯p Data at 1.96 TeV and from pp Forward Scattering Measurements

We describe an analysis comparing the p¯p elastic cross section as measured by the D0 Collaboration at a center-of-mass energy of 1.96 TeV to that in pp collisions as measured by the TOTEM Collaboration at 2.76, 7, 8, and 13 TeV using a model-independent approach. The...

Záznamy kolekce (řazeno podle Datum zaslání v sestupně pořadí): 1 až 20 z 44