Second harmonic generation (SHG) is a unique non-linear optical effect that can be used to investigate chemical states of molecules at surfaces/interfaces. By the use soft X-rays, SHG gains element selectivity through inner-core excitation resonance. However, it challenging observe signals separately from second-order light generated undulator. Here, we report new ellipsometry method for X-ray ...

the notion of absorbent ordered filters in implicative semigroupsis introduced, and its fuzzification is considered. relations among (fuzzy) orderedfilters, (fuzzy) absorbent ordered filters, and (fuzzy) positive implicativeordered filters are stated. the extensionproperty for (fuzzy) absorbent orderedfilters is established. conditions for (fuzzy) ordered filters to be (fuzzy)absorbent ordered ...

1. Abstract In the ground structure approach for topology optimization, some restriction method is needed to avoid mesh dependent solutions and enforce a length scale on the optimized structure. This talk presents new restriction methods in the form of four different density filters to be used within a relaxation/penalization method like SIMP. The first two are based on the geometric mean, whil...

The paper proposes a solution for the problem of optimizing medium voltage power systems which supply, among others, nonlinear loads. It is focused on decision tree (DT) application sizing and allocation active filters (APFs), are most effective means quality improvement. Propositions some DT strategies followed by results have been described in paper. On basis an example medium-voltage network...

Due to increased load demand, the power system developers are encouraged meet quality requirements. Using harmonic filter and capacitor bank is one of essential solutions in mitigating issues. This research aims mitigate harmonics improve voltage distribution systems by using ETAP. For this purpose, a Homs city considered, which part Syrian system. The banks designed numerical analysis Optimal ...

The proliferation of variable frequency drives (VFDs) has brought increased attention to harmonic effects created by drives. A standard 6-pulse drive without any harmonic mitigation technology may interfere with neighboring equipment, reduce equipment life, and negatively impact the utility power quality. Under some circumstances the total harmonic current distortion (THID) may approach the lev...

Nonlinear and unbalance loads in three phase networks create harmonics and losses. Active and passive filters are used for elimination or reduction of these effects. Passive filters have some limitations. For example, they are designed only for a specific frequency and they may cause to resonance in the network at the point of common coupling. The other drawback of a passive filter is that the ...

Abstract—This paper presents comparative study and implementation of Unified Power Quality Conditioner (UPQC) to eliminate harmonics and reactive power compensation in a single-phase to threephase converter system. The proposed configuration solves typical problems encountered in remote rural area applications, where only a single-phase supply is available and there is a demand for three-phase ...

Nowadays, the proliferation of non-linear loads (especially power electronics equipment) leads to deterioration of the quality of voltage waveforms at the point of common coupling (PCC) of various consumers. In view of the wide spread use of harmonics-sensitive electronic equipment, power conditioning equipment is becoming more important for both electric utilities and their customers. With rap...