Competitiveness of district and process heat production based on fossil fuels is challenging. Costs of fuel, technology improvement for reaching the emission limits and carbon credits purchasing increase price of produced heat. The TEPLATOR concept is an innovative way to eliminate all ...

An ex-core neutron flux measurement is a crucial system for all common power reactors. It is necessary to monitor neutron flux and control the chain reaction therefore the ex-core neutron flux measurement is one of the main safety and control systems. The main advantage of...

For an autonomic power lines inspection robot the energy harvesting system and communication systems are being developed. In this paper the energy harvesting based on toroidal split core current transformer is described. The maximal output power is depend on the current in power li...

The home battery energy storage systems (ESSs) are expanding worldwide together with the renewable energy sources (especially solar power plants). As the energy sourced by the different power sources (sun, wind, electrical grid) has to be stored inside the ESS the electrochemical cells&...

Industrial Internet of Things is one of the opportunities for online state monitoring, effective control and economical profitability of selected systems. The majority of electricity generated in the Czech Republic comes from conventional fossil power plants - 54% in 2018. Same fact app...

The most modern and mature industrial manufacturing revolution is known as Industry 4.0 (I4.0). Technological advance seeks to minimize all sorts of waste, optimizing the firm's performance operations aligning this its competitive advantage. While in developing economies often overlooked the ...

Magnetic actuation technique for the collective operation of untethered miniature robots by uniform control input is presented. The technique allows us to actuate multiple robots simultaneously and enables us to prohibit the actuation of selected ones while others are still operated. Non-act...

This paper deals with the design, fabrication and risk assessment of IoT unit to reliability improvement of products manufactured in the Industry 4.0 factory. The collected data from the manufactured products can provide feedback to the manufacturing company via the Internet of Things&#...

This paper describes the construction of a test bench usable for testing of non-standard electric machines, i. e. electric machines with non-standard mounting interface, rated speed etc. The test rig is adopted to use a standard induction machine as a load for tested machines ...

In the paper, electromagnetic and vibration analyses of traction electric machine exhibiting static and dynamic eccentricities is performed. The machine is a highspeed permanent magnet synchronous motor with surfacemounted permanent magnets and double-layer concentrated winding. The machine is intended...

This paper deals with the injection of higher harmonics in a nine-phase induction machine. The work introduces motor parameters and describes various winding connections possible for nine-phase motor. It also presents higher harmonic components injection strategy and discusses results from finite...

The main goal of this work is in the qualification of temperature changes due to design modifications of the medium-sized turbo generator with the output power 40 MW, ie the temperature distribution of the active parts. The work summarizes of designing a number of changes ...

This article deals with the issue of selected polymer composites consisting of a thermoset matrix and reinforcing glass fibers. These composites are designed for high voltage applications as an electrical insulating material with high mechanical durability. Three composites with a significantly&#...

Partial discharge (PD) measurement at DC voltage becomes more and more important due to the increased application of HVDC components in electrical power systems. Numerous studies of PD behaviour on various type of insulation at DC have been currently performed to find out appropria...

Natural and synthetic esters will be more and more applied as an alternative fluid to the commonly used mineral oil. The application in electrical apparatus needs, at least, the same withstand ability against electrical breakdown or partial discharge (PD) activities as given by the...

The article analyzes the factors that accelerate the aging process of the oil-paper insulation of the condenser type and shorten its service life. Attention is drawn to the fact that the breakdown of flat insulation made of condenser paper occurs at the location of the in...

The film-impregnated dielectric under operating conditions is subject to prolonged exposure to electric and thermal fields, as well as mechanical loading. In addition to critical partial discharges, the most serious drawback that impairs the film and condenser reliability in general is the&#...

The main contribution of this paper is design of optimal field oriented (vector) control of a multi-winding permanent magnet synchronous motor. Three variants of vector control structures for the multi-winding synchronous motor are presented in the paper. Each of the presented vector co...

This paper deals with an experimental injection of harmonics to a stator winding of a nine-phase machine. Different combinations of the harmonic components are applied with the optimal magnitudes calculated by a linear programming to maximize exploitation of a magnetic circuit. The theo...

Inductance variation with the load can have a significant effect on the operation and control of the machine and it should to be implemented in the analytic design of the machine. In this paper a magnetic equivalent circuit (MEC) method used for the analysis of the p...