In this paper, an optimization technique is proposed to compute switching angles at fundamental frequency switching scheme by solving non linear transcendental equations (known as selective harmonic elimination equations), thereby eliminating certain predominating lower order harmonics, and simultaneously, control over magnitude of output voltage of a multilevel inverter is achieved. As these e...

In this part, a FPGA based implementation of Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) as applied to a single-phase A.C. Chopper using Generalized Hopfield Neural Network (GHNN) is designed and implemented. The objective of this part is to eliminate 5 th , 7 th , 11 th and 13 th order harmonics in the output voltage waveform of the single-phase A.C. Chopper while retaining ...

electric arc furnace (eaf) is one of the largest loads in electric power systems. it is highly time varying and nonlinear. its reactive power variations cause voltage fluctuations in nearby system which is known as flicker. on the other hand the nonlinear voltage-current characteristic causes strong voltage and current harmonics in eaf. to this end flexible ac transmission systems (facts) techn...

This paper presents a novel control strategy for isolated 4-wires Micro Grid MG based on Wind Turbine WT driven Doubly Fed Induction Generator DFIG with an integrated Super-Capacitors SCs that act as energy storage. The proposed system comprises of variable speed DFIG, DC-link and Grid Side Power Conditioner GSPC. The GSPC is devoted for the MG voltage magnitude and frequency control, balancing...

The bulk of the world's phosphate reserves is located in sedimentary horizons that contain appreciable amounts of carbonate. During beneficiation of phosphate rocks, huge amounts of oversize phosphate rocks are rejected from crushers. This reject also mostly contains low tricalcium phosphate and high carbonate content. In this study, experiments have been carried out to reduce/eliminate car...