In this study, different designs of radial-flux direct-driven permanent magnet (PM) motors are compared. They should replace an induction motor and its gearbox for an industrial application requiring 5 kW and 50 rpm. The goal is to show if the use of concentrated windings brings some benefits for this application, the PM motors having a high number of poles. Different combinations of the number...

One maintenance task that still exist with conventional motors, are bearing lubrication and renewal. Bearingless motors are replaced with conventional motor that uses a magnetic levitation force to suspend a rotor without any mechanical contact. In bearingless motors, additional windings are wound together with motor windings in stator slots. In this paper, a bearingless permanent magnet-type s...

The largest loss in an example litz-wire flyback transformer is found during current commutation between windings. In order to reduce this loss, a new optimization method is introduced. The new method optimizes strand size and number in litz wire considering cost and loss. Unlike previous methods, it is valid with twoor three-dimensional field geometry and with different non-sinusoidal waveform...

The performance (stability) of superconducting wires is ensured by smearing their transient characteristics. same important property can be used to create reliably controlled non-degrading windings. transition the normal state such windings preceded appearance an electric voltage in area located maximum magnetic field. more smeared wire response, greater magnitude stable voltage. Keywords: lami...

The analysis of operating conditions induction traction motors as part electric drives locomotives reported here has revealed that they are powered by autonomous voltage inverters with asymmetric non-sinusoidal voltage. It was established the motor operation may be accompanied defects caused asymmetrical modes stator. A model been proposed takes into consideration changes in values mutual induc...

We propose a modification of the Hybrid Monte Carlo (HMC) algorithm that overcomes topological freezing two-dimensional $U(1)$ gauge theory with and without fermion content. This includes reversible jumps between sectors$-$winding steps$-$combined standard HMC steps. The full is referred to as winding (wHMC), it shows an improved behaviour autocorrelation time towards continuum limit. find exce...

Aryl azides were treated with allenylmagnesium bromide to generate 1,5-disubstituted butynyl 1,2,3-triazoles in a domino fashion, which upon Cu(I) catalyzed 1,3-dipolar cycloaddition with aryl azides afforded novel bis-1,2,3-triazoles in quantitative yields. The final products were analyzed for their antimicrobial activities against a panel of bacterial and fungal strains which revealed the pro...

This paper deals with reliability aspects of Module Integrated Converters (MIC) for grid connected photovoltaic applications. The presented “Low Profile Design” of a MIC has almost twice the power density and a 70% longer lifetime than commercially available MICs. In order to miniaturise and increase the reliability of the MIC all magnetic components have been realised using planar cores and wi...

I show that the usual model of the rotational response of a neutron star, which predicts rotation-induced neutronic vortices and no rotation-induced protonic vortices, does not hold (i) beyond a certain threshold of entrainment interaction strength nor (ii) in the case of nonzero Sigma(-) hyperon gap. I show that in both of these cases the rotational response involves the creation of phase wind...