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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 46
Komrska, Tomáš , Glasberger, Tomáš , Peroutka, Zdeněk
Minimum infinity norm-based PWM for three-phase four-leg converters

Control of four-leg voltage-source converters operating on three-phase systems traditionally faces the problem of transformation from a four-degrees of freedom (DOF) modulation space to a three-DOF output-voltage space. Contemporary, it is highly desirable to minimize the leg voltage, and consequently...

Bhajana, V.V.Subrahman. Kumar , Drábek, Pavel
Novel ZCS transformerless high gain DC-DC converters for renewable energy conversion systems

This paper proposes new zero current switching (ZCS) transformerless high gain DC-DC converters for renewable energy conversion systems. A conventional high gain transformerless DC-DC converters derived with a simple auxiliary resonant network to obtain zero current switching (ZCS) turn-off condition&...

Štěpánek, Jan , Bednář, Bedřich , Drábek, Pavel
Verification of the current load capacity of the MOSFET transistor for low-voltage application using temperature estimation

This paper deals with the verification of the maximum current rating of MOSFET transistors in a discrete package TO-247AC. The main motivation for this analysis was the redesign of AC power drive chain for electric go kart with three phase power converter of the output no...

Bednář, Bedřich , Drábek, Pavel , Pittermann, Martin
Implementation of FPGA and DSP combined algorithms for modular single-phase matrix converter with medium frequency transformer for traction drive application

The paper introduces basic characteristics of the traction drive and the way how modern multi-system traction vehicle can be realized. The main aim of the paper is focused on using single phase matrix converter (1ph MC) as an input converter for medium frequency transformer. T...

Kehl, Zdeněk , Glasberger, Tomáš , Peroutka, Zdeněk
Finite control set model predictive control of static compensator

Static Var Compensators (SVC) are related to improve quality of electrical energy in power grids. There are described two topologies of the static var compensator in the paper. First of them is a star/Y-connected topology and the second one is a delta/D-connected topology....

Streit, Luboš , Štěpánek, Jan , Komrska, Tomáš , Jára, Martin , Peroutka, Zdeněk
DC losses heatsink verification of IGBT converter for power systems

This paper deals with heatsink design and verification of IGBT-based full-bridge converter of rated power 150 kVA. The converter is designed for air cooling-based installation of total power 1.35 MVA operating in medium-voltage power system. In order to exactly determine the cooling abi...

Krejčová, M. , Světlík, P.
Feedback control of myosin head

Janouš, Štěpán , Košan, Tomáš , Talla, Jakub , Peroutka, Zdeněk
Improved accuracy of model predictive control of induction motor drive using FPGA

Finite control set model predictive control (FCS-MPC) is one of successful model predictive control approaches in electric drives which offers effective solution to multi variable multi criteria problems. The optimal control is found by “brute force” search over the limited set of possi...

Kroneisl, Michal , Šmídl, Václav , Peroutka, Zdeněk
Adaptation of predictive acoustic noise control of IM drive to variable operating conditions

Finite control set MPC of IM drive is known to produce a spread spectrum of the stator currents. Spectrum of the acoustic noise also exhibits higher spread than that of the PWM which may be perceived as more pleasant sound by humans. Predictive acoustic noise control ...

Gevorkov, Levon , Šmídl, Václav , Sirový, Martin , Rassõlkin, Anton , Kallaste, Ants , Vaimann, Toomas
Model for torque estimation of pump system with horizontal pipe network

This paper investigates the possibility of torque estimation of Centrifugal Pump System (CPS) with horizontal pipe network topology. It illustrates the concept of a model-based scheme for hydraulic system simulation. The simulation model developed for CPS takes into consideration the hydraulic&#x...

Zavřel, Martin
Návrh a realizace kompenzačního kondenzátoru bezdrátového přenosu energie s rezonanční vazbou

In this paper is described compensating capacitor for series-series wireless power transfer system. Description is focused on important capacitors parameters and on precision design of capacitor. The design is done in plate-capacitor topology with emphasis on high capacity density, high applicabl...

Lovecký, Martin , Závorka, Jiří , Jiřičková, Jana , Škoda, Radek
Burnable absorber layer in HTR coated particles for OTTO fuel cycle

High temperature reactor is loaded by fuel pebbles that slowly flow through the reactor core. Reactor operation is described by a continuous on-power refueling with two possible fuel cycles. Multi-pass scheme allows lower peak power density. Moreover, multiple passing through the core s...

Frank, Zdeněk , Hruška, Karel
Design, construction and measurement of an educational synchronous machinery

The paper deals with a complete manufacture of a synchronous machinery for educational purposes. The main target of the design is creation of a machinery which clearly shows all constructional components of used machines, its overall dimensions allow easy transportation between education...

Laksar, Jan , Veg, Lukáš
Reduced Schwarz-Christoffel conformal mapping in surface-mounted PMSM

Schwarz-Christoffel conformal mapping method is widely used in modeling of air gap flux density distribution of electrical machines. It should not be as time consuming as definition and calculation of the finite element model but provides results with high accuracy. Also the improved&#x...

Čermák, Radek , Pechánek, Roman
Thermal study of permanent magnet direct drive wheel motor

This work deals with thermal design of permanent magnet synchronous motor (PMSM). The designed motor is the in-wheel traction motor for automotive. The motor consist of an external rotor and inner stator with water cooling system. The thermal calculation is based on the simplified&...

Pittermann, Martin , Fořt, Jiří , Diesl, Jan , Pavlíček, Vladimír
Optimal SRM-control algorithm to achieve maximum torque and real converter limits

The paper deals with an “optimal” control algorithm for switched reluctance motor (SRM). The principle of this control method is based on a maximal torque per ampere (MTPA) criterion which prefers the maximal average value of torque, regardless of the torque ripple, in compare ...

Votava, Martin , Glasberger, Tomáš , Peroutka, Zdeněk
Predictive real time minimization of power losses with improved space vector preselection algorithm

The proposed control algorithm is focused on reducing and redistribution of power losses among the transistors and diodes in a dual (open winding load) converter. The proposed method combines a space vector PWM (SVPWM) with a finite control set model predictive control (MPC). The&#...

Talla, Jakub , Košan, Tomáš , Blahník, Vojtěch
FOC - based speed control algorithms of induction motor drive with system parameter mismatch

The field oriented control algorithms (FOC) of induction motor (IM) drives are generally sensitive to model parameter mismatch. Especially, the proper flux orientation and flux amplitude is influenced by the rotor/stator resistance values. Moreover, the rotor and stator resistances are tempe...

Veg, Lukáš , Laksar, Jan
Thermal model of high-speed synchronous motor created in MATLAB for fast temperature check

This article is focused on computational modeling of the temperature increase of the high-speed permanent magnet motor. The main aim is to create the calculation program. The program is based on parametric motor model. The methodology of calculation is the Lumped Parameter Thermal ...

Hruška, Karel , Laksar, Jan , Šobra, Jan
The determination of iron core loss characteristics of special electrical steel types

The paper compares characteristics of three steel types - one standardized in EN 10106 (M235-35A) and two special steel alloys - Arnon5 and Hiperco 50. The iron core loss characteristics are derived to describe the dependence of loss number on magnetic flux density and frequen...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 46