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Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 43
Yenil, Veli
An Improved Pulse Density Modulation Control for A Semi Active Rectifier in Wireless Power Transfer with LC/S Compensation

This paper proposes an improved pulse density modulation (PDM) control for a semi active rectifier (SAR) in wireless power transfer (WPT) with LC/S compensation. In order to improve the output regulation performance of the WPT converter, an improved pulse density modu...

Vinš, Martin
Economic Evaluation of Battery Energy Storage Integration into Plant with Cyclic Load

This paper deals with the simplified economic evaluation of the peak shaving by a battery-based energy storage system in plants with cyclic load profile (typically steel plants) and its own electrical energy source – typically the steam turbine. There are several poss...

Pokorný, Michal , Veřtat, Ivo , Masopust, Jiří
Electronic Control Board for Phased Antenna Array Research and Prototyping

Current state-of-the-art phased antenna arrays used in modern generations of mobile networks and radars in terrestrial applications or as spacecraft antennas in space applications tend to be very complex and expensive devices with many mutually coupled elements and many input&#...

Valenta, Pavel , Skála, Jiří , Georgiev, Vjačeslav , Maše, Bohuslav , Koucký, Václav , Hammerbauer, Jiří , Krauz, Jiří
The speed up of vibrating hydraulic jaws by smart control of electric solenoids

Advanced Electro-Hydraulic Systems (AEHS) are the only way to achieve top-notch parameters for high-end vibration machines. The AEHS is intended to a more complex forming test system developed at University of West Bohemia. The AEHS speeds up the hydraulic by increas...

Teodorescu, Horia-Nicolai L.
Seismic Energy Harvester for High Current Emergency Applications: Gas Valves and Alarms

The paper explores if an energy harvester can be used as a sensor for the detection of waves from events such as earthquakes and blasts and at the same time produce high currents for use in an emergency gas valve. A design is proposed for an e...

Teodorescu, Horia-Nicolai L.
Lambert Function in the Determining of the Noise Equilibrium Frequency for Radiation Detectors

We analyze several cases of combined noise in sensors for radiation and in sensor-amplifier circuits. Solutions are shown to involve the Lambert function of various variables when the unknown is a frequency limit of the bandwidth. The coverage of the paper is ess...

Talla, Jakub , Streit, Luboš , Janouš, Štěpán , Suchý, Ondřej
LQR Control of Input LC filter of a Tram with On-board Energy Storage System

The main traction power converter of a trams is connected to DC trolley wire by input LC filter. The tram input LC filter is almost undamped resonant circuit, which is often loaded by the motor constant torque command. Sources of the input LC filter osc...

Šuňal, Martin , Biel, Zdeno , Pčola, Marcel
Implementation of charger current sharing method in railway application using CAN bus

This paper presents the application of parallel cooperation of chargers in auxiliary converters of rolling stock. A control strategy based on CAN serial bus communication has been proposed to achieve even load power sharing by the individual chargers of the parallel s...

Štengl, Josef , Komrska, Tomáš , Burian, Petr , Peroutka, Zdeněk
Fast Real-Time Data Exchange among Distributed Control System of STATCOM Installation

Power installations based on power converters in power transmission and power distribution require real-time control which is usually implementing using multiple control units. Therefore, very fast data exchange within constant sampling periods across whole control system is needed. ...

Štork, Milan , Novák, Jaroslav
Anaerobic Threshold Approximation with Minimum Number of Blood Samples

In this paper the anaerobic threshold measuring and approximation with minimum number of blood samples is described. Anaerobic thresholds are calculated for athletes tested on a bicycle ergometer and treadmill ergometer where the heart rate and pulmonary ventilation parameters, ...

Štork, Milan , Hammerbauer, Jiří
Recursive Sine Wave Digital Oscillator with New Method Used for Amplitude Control

This work describes the control of the amplitude of the output signal (or amplitude stabilization) in digital sine recursive oscillators. As in the case of analog oscillators, it is also necessary to control the amplitude of digital oscillators with a sine wave. ...

Skarolek, Pavel , Lettl, Jiří
GaN Based Inverter Current-Collapse Loss Decrease Using 5-segment Modulation

The current collapse phenomenon increases conduction losses in high electron mobility transistors. This paper presents a simple option to decrease these losses in 3 phase hard-switching inverter driving permanent magnet synchronous motor utilizing 5-segment SVPWM modulation. Converter&#...

Siahkamari, Hesam , Jahanbakhshi, Maryam , Lotfi, Saeedeh
New Approach In Designing Hexagonal-Shaped Antenna Based On Area Analysis

n this article, a new method is presented to calculate dimensions of a hexagonal-shaped antenna based on frequency and rectangular-shaped antenna. The frequency responses of the presented antenna are compared with rectangular shape antenna and both antennas are designed at ...

Reindl, Andrea , Langer, Tobias , Meier, Hans , Niemetz, Michael
Comparative Reliability Analysis for Single and Dual CAN (FD) Systems

Modern cyber-physical systems, such as autonomous vehicles, advanced driver assistance systems, automation systems and battery management systems, result in extended communi- cation requirements regarding the reliability and the availability. The Controller Area Network (CAN) is a broadcast-b...

Pozzobon, Enrico , Renner, Sebastian , Mottok, Jürgen , Matoušek, Václav
An optimized Bitsliced Masked Adder for ARM Thumb-2 Controllers

The modular addition is used as a non-linear operation in ARX ciphers because it achieves the requirement of introducing non-linearity in a cryptographic primitive while only taking one clock cycle to execute on most modern archi- tectures. This makes ARX ciphers espe...

Pittermann, Martin , Blahnik, Vojtěch , Straka, Miloš
Model Study of Cooperating Traction Substations at 25 kV Traction Catenary without Superior Power Distribution Control

This paper describes the results of the model study for traction system 25 kV / 50 Hz, which is built on an advanced traction substation with a rail active balancer and phase shifting device. The first part of this paper is described traction substation...

Michal, Vratislav
Regulated Cascode Current Mirror with Improved Voltage Swing

This paper presents a simple and easy-to-use method allowing to improve output swing of regulated cascode CMOS current mirror with short channel devices. It is based on matched offset voltage generators, implemented simultaneously at the input and output of the current...

Michal, Vratislav
Floating Voltage Sensing Based on Ceramic Capacitor Ferroelectric Derating

This paper presents methods allowing to provide galvanically isolated DC voltage measurement with nearly infinite input impedance. Measurement is based on a ferroelectric effect, creating hysteretic capacitance vs. bias- voltage (C-V) dependence of the ordinary multilayer ceramic c...

Matoušek, David , Černý, Ondřej
IO-Link Master Bridge

This article describes the practical implementation of the IO-Link master bridge, which ensure an interface between IO-Link devices and a main controlling computer. The main effect of this implementation is a simple data acquisition system based on a microcontroller that e...

Maier, Robert , Mottok, Jürgen
Causality and Functional Safety - How Causal Models Relate to the Automotive Standards ISO 26262, ISO/PAS 21448, and UL 4600

With autonomous driving, the system complexity of vehicles will increase drastically. This requires new ap- proaches to ensure system safety. Looking at standards like ISO 26262 or ISO/PAS 21448 and their suggested methodologies, an increasing trend in the recent literatur...

Collection's Items (Sorted by Submit Date in Descending order): 1 to 20 of 43