The diffusion maps together with the geometric harmonics provide a method for describing the geometry of high dimensional data and for extending these descriptions to new data points and to functions, which are defined on the data. This method suffers from two limitations. First, even though real-life data is often heterogeneous , the assumption in diffusion maps is that the attributes of the p...

This paper is focused on the analysis of a Kalman filter performance when introduced in the current control loop of a distributed generation connection inverter. The idea is to use this kind of filter to reduce the harmonic content of the currents injected in the point of common coupling. The study has been performed by means of simulation using MatlabSimulink and clearly demonstrates that this...

This paper presents a new winding with low higher spatial harmonics content. enables the elimination of fifth harmonic, as most significant, in three-phase and third harmonic two-phase symmetrical winding. The suppression is particularly evident number slots per pole phase qs = 2. factors for order ν 6 k ± 1 case winding, 4 1, 3, 5, …, will be equal to zero. A measurement was used evaluate cont...

This paper first presents a simple control technique for active filters to compensate current harmonics and reactive power of nonlinear loads. This method is usable for both single –phase and three –phase systems. Then a new method for load balancing and reactive power compensation for unbalanced sinusoidal load currents is presented. Finally by combination of two methods an active filter contr...

Introduction. This article’s subject is a dual function energy system that improves the quality of electric with help an active power filter and uses new technique command named ZDPC (Zero Direct Power Command) on one hand, other hand it injects photovoltaic (PV) renewable to electrical networks in presence non-linear charges. The novelty work consists subtraction disturbances resulting from ch...

All fundamental frequency estimators based on spectral analysis rely heavily on a proper harmonic selection of the voice analyzed. Since in practice other spectral peaks pertaining to different sources are present in the signal, various schemes have been design to ensure a satisfactory elimination of non pertinent harmonics. This paper introduces a new harmonic selection algorithm based on harm...

We combine different wavelengths from an intense high-order harmonics source with variable delay at the focus of a split-mirror interferometer to conduct pump-probe experiments on gas-phase molecules. We report measurements of the time resolution (<44 fs) and spatial profiles (4 μm × 12 μm) at the focus of the apparatus. We demonstrate the utility of this two-color, high-order-harmonic techniqu...

This paper used an artificial jellyfish search (AJFS) optimizer suitable for selective harmonic elimination-based modulation multilevel inverter (MLI) voltage control application. The main objective was to remove the undesired lower-order harmonics in output waveform of MLI. algorithm motivated by behavior ocean. Jellyfish have ability find global best position where a large quantity nutritious...

We discuss a method of producing computer assisted proofs of almost everywhere strong convergence of the d-dimensional Gauss algorithm. This algorithm is equivalent to Brun's algorithm and to the modi ed Jacobi-Perron algorithm considered by Podsypanin and Schweiger. In this paper we focus on the reduction of the problem to a nite number of calculations. These calculations have been carried out...