Dual induction motor single inverter drives reduce installation space, weight and overall cost. On the other hand, complexity of the control increases significantly, since the condi­tion on each electric machine can vary in a wide range. Today, majority of control algorithms uses cascad...

The main goal of this paper is to analyze a low harmonic interferences of ac-dc traction converter and the influence of selected signals. In this case, the ac-dc converter is based on H-bridge topology. This type of converter is important part of a majority modern ac ...

The paper is focused on the tram input LC traction filter stabilization by the super capacitor energy storage system. The input LC filter is almost undamped resonant circuit connected on the both sides to the sources of disturbances. On the input side, LC filter is connec...

The paper deals with the comparison of SRMconverter topologies, focusing on comparing the number and the dimensioning of semiconductor elements for the medium power engine (from approx. a hundred watts to tens of kW). The paper considers basic well-known configurations (e.g. an asymmetr...

The paper deals with the experimental verification of vibration frequency spectra of squirrel-cage induction machine having implemented static eccentricity fault. The measured data are compared to the theoretical presumptions and the transient finite element analysis of the measured machine. Measureme...

This work deals with different methods of thermal modelling of the stator winding in a slot. The analyzed machine is a permanent magnet synchronous motor (PMSM). The simplified lumped thermal model and model parameters are described. The finite element methods model is set up ...

Newly developed methods for heat treatments and any necessary thermomechanical working have led to the achievement of excellent properties for new types of multiphase structures. One of these new methods is the Q-P (Quenching and Partitioning) process. The result is usually martensitic ...

This paper deals with the structures and the architectures of the safety related systems. The assignment of architecture, which is related to the application of the system, belongs to one of the most important parts of the equipment design. The most used architectures 1oo2, 2o...

The aim of this article was to describe design and verification of antiwindup compensation for LQ control of single-phase converter with LCL filter. The Matlab environment is used for verification of proposed design.

In this paper, the utilization of Graphics Processing Units for parallel LDPC decoding is proposed. The proposed algorithm allows decoding of any irregular LDPC code. The principle of the parallel algorithm is briefly presented, and the performance comparison against serial decoding with...

The paper describes a technique how to synchronize timestamps from several devices. The method is shown and the measurement system for desired resolution is mentioned. Results proving the functionality are discussed.

In this paper, calculation of one of the parameters affecting the air gap magnetic flux density is described. It is the saturation effect which causes the flattening of the flux density distribution. The flattening is calculated numerically by the application of the no...

This article deals with the thermal analysis of traction transformer. The traction transformers are special kind of the transformers. The windings have lots of voltage terminals for various voltage levels and various supply systems. In the article is described the thermal mathematical m...

This topic is focused on issue of proposal, constructing and commissioning of voltage inverter with SiC (Silicon-Carbide) modules for needs of electric kart. The base of proposal are in the numerical simulation of inverter (thus on calculation ratios of voltage, current, losses and ...

Model predictive control of dual inverter is extended to consider thermal balancing and temperature limits of IGBTs. The thermal model is formulated using switching losses. A steady state of the thermal model is added into the cost function. When the critical temperature is approac...

In this article is mentioned several important aspects of dynamic stability of power system in the Czech Republic. All necessary explanations about dynamic stability are explained below. In the conclusion is shown possible solution of problem with overflow of performance from German sid...