In this paper, the development of a compact LLC resonant converter based on GaN devices and with output power up to 10 kW is described. The capability of 1 MHz operation contributes to small overall dimensions involving the power stage, drivers and also the control system...

The subject of the presented paper is research on possibilities of using of oil spray cooling for small traction motors. This paper is dealing with the measurement and evaluation of the type and ideal oil pressure to get the highest heat transfer coefficient. The application&#...

The paper deals with the detailed analysis and electromagnetic design of coupling elements for wireless power transfer with compensation realized only on the primary side. It summarizes the basic mathematical description of series-none resonance coupling and maps basic operational properties. The...

The paper deals with the design, implementation and experiment of an embedded drive system diagnostics for interior permanent magnet synchronous motor drive for safety critical applications. The drive is intended for traction drive applications therefore it uses a combination of a digital&#x...

In this paper we deal with predictive control of Interior Permanent Magnet Synchronous Motor (IPMSM) drive. The main goal of this paper is to improve produced torque quality by using precise mathematical model of IPMSM, which takes into account anisotropy of the motor construction....

This paper is concerned with topology selection, and description of operating states, for the next generation of AC 25kV traction substation (TSS) with electronic advanced rail balancer (ARB). The first part describes the commonly used TSS topologies and their properties. The second par...

Identification of thermal model parameters using multi-step prediction is proposed. Even in the case of a linear model, the multi-step prediction is a non-linear complex function, hence we use techniques of deep learning for its identification. Specifically, we use stochastic gradient descen...

The paper describes the design of a converter for use in automotive industry and it is designed as a so-called “Full SiC” converter. It aims to develop a traction converter with a high-power density of 100 kW/l, which brings the parameters close to the goals of ...

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. If the amplitu...

Home blood pressure monitors will play increasingly important role in 21st century healthcare. Improvements in their accuracy and reliability will be necessary. In this paper we described their function and suggested several improvements. The improvements include static accuracy check, a public&#...

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 increasing pressure in ...

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, oxygen consumption...

This paper proposes a new non-isolated bidirectional dc-dc converter (NI-BDC) with an auxiliary resonant network (ARN) that is typically operated in both boost and buck modes. Regardless the direction of power flow, soft-switching capabilities such as zero voltage switching (ZVS) and zero&#x...

A new generation of binary input/output card for a modular control system is introduced in this paper. The primary purpose of the proposed binary input/output card is high integration of the number of 32 binary input and output channels. The individual binary channels are...

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 topology with...

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. This paper de...

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 oscillation may b...

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 possible motivations&#x...

This paper deals with the introduction and application of the software platform ZOTY, which is a new innovative software platform to accelerate the implementation of management and operation systems. In the first part, the research of available solutions for risk management on the ...

The paper deals with a novel self-healable polymer synthesized by scandium-catalyzed copolymerization of ethylene and anisylpropylenes. The electrical strength of the material was characterized according to the standard IEC 60243 and was carried out with an AC voltage increase of 1 kV/s...