In this paper we propose a design of a programmable voltage source with high speed current feedback for disconnecting the electronics when the over current occurs. Short circuits may occur in electronics used in ionizing radiation environment because of Single Event Effects (SEEs) ...

In this paper is described a part of the system for the reduction of nitrogen oxides (NOx) in the exhaust system. The system is designed for diesel engines and the control electronics must be independent of the engine type. The principle of mass flow measurement of e...

This paper deals with a proposal of a carrier redistribution PWM and its comparison with a phase disposition PWM (PDPWM) and carrier redistribution PWM for a multilevel converter dedicated to high power medium voltage electric drives. The converter topology is based on a cascaded&#...

This article describes possible proposals of the active battery cell balancer for Li-ion battery-pack which should be used as a replacement of the common passive cell balancer in the existing battery management system. The main goal of this paper is to compare the most efficie...

This paper describes communication method for use in a wireless sensor network, which focus on a bidirectional communication with prevention of data loss and minimization of a power consumption of the wireless sensor. The method described was successfully tested and verified on an ...

This paper deals with rotor and stator resistance estimation of induction motor (IM) drive based on augmented Extended Kalman Filter (EKF). The proper knowledge of rotor flux magnitude and flux position is a necessary condition for high performance induction motor control (Rotor Flux&#x...

A pacemaker is a small electronic device implanted under the skin near the collarbone. Pacemakers monitor the heart's electrical activity. If the heart is beating too slowly or pausing too long between beats, the pacemaker will provide electrical impulses that stimulate the heart&#x...

Drowsy driving is considered one of the most serious causes of fatal traffic accidents, especially for long distance drivers who struggle significantly during monotonous driving conditions. As a result, various types of warning systems have been proposed among other preventive measure agains...

The dynamics of a resistively coupled nonidentical Josephson junction (JJ) circuit is explored and a new control strategy is applied in order to smoothen the unstable regimes. In such a system, periodic, quasiperiodic and chaotic behaviors have been encountered worldwidely. In addition, ...

Multi-wing chaotic attractors are highly complex nonlinear dynamical systems. A new four-scroll chaotic attractor was found by energy feedback controlling method in this paper. Spectral analysis shows that the system in the four-wing chaotic mode has very broad frequency bandwidth, verifying ...

The paper discusses methodology for construction of low-pass high voltage (HV) filter for measuring of partial discharge deteriorating the insulating system of electric machinery. It focuses mainly on the shape optimization using analytical approach with subsequent verification using finite element&#x...

Traction converter with medium frequency transformer (MFT) presents current trend of modern locomotive drives topology. Traction drives based on MFT significantly reduce weight of bulky low frequency traction transformers and present modern traction converter topology. Single-phase converters connected to&...

This paper describes the variants of realization of high voltage converter for purpose to minimizing of weight of traction transformer (so called “electronic-transformer”). The high voltage converter brings the possibility of using medium frequency transformer (with frequency for example 400Hz) i...

This paper describes the control algorithms for electric drive with single phase matrix converters supplied medium frequency converter for traction purpose. Described control algorithms realize the control of active and reactive power, output voltage, reduce harmonic disturbance in input current ...

This paper describes the switching algorithms for single phase matrix converter (switching logic for matrix converter). There is shown two basic methods of the control of the switches in the matrix converter and these modifications (and combining algorithm). First method needs the knowl...

The aim of this paper is to present two different control approaches with injection of high frequency signals for estimation of rotor position and speed of a permanent magnet synchronous motor (PMSM) due its anisotropy. There are selected and modified two methods, a sliding mo...

This article describes one possible solution of bias networks for special broadband RF amplifiers. The purpose is amplification special pulse signals from particle detectors, which demands well defined time domain properties. The problem is demonstrated on two basic prototypes with different ...

This paper describes the design of special high power DC-source 110V/1kA. The emphasis was taken to the issue of the negative impact minimizing of DC source on power supply network from low-frequency interference point of view. The paper contains the simulation model of propos...

This paper is focused on the influence combinations of the dead time duration and switching frequency on the drawn current from the grid by voltage-source active rectifiers. Newly the various definitions of the total harmonic distortion of the current are used. According to the...

This paper describes a universal sinusoidal modulator developed primarily for the multilevel cascaded H-bridges converters. The modulator was implemented as a FPGA entity and its versatile features allows it to be easily reused in various topologies based on H-bridges. This includes the ...