An investigation on the performance of grid integrated multifunctional inverter using intelligent control techniques

Abstract

The rising demand for electric energy is the major concern for newlineelectric energy producers and consumers. The increasing usage of electronic newlinegadgets in today s modern life is an another issue for service providers due to newlinethe electrical pollution like voltage sag, voltage swell, low power factor and newlineharmonics introduced by such gadgets in the distribution line. For utility newlinesector, harmonics is an important concern. The major factors that contribute to newlinethe harmonics in the distribution line are power electronic switches, electric newlinedrives, capacitors and increased applications of non-linear loads. newlineSeveral harmonic mitigation techniques have been proposed by newlinevarious researchers to decrease the effects of harmonics including transformer newlineconnections, capacitor banks, passive power filters, Active Power Filters newline(APFs) and hybrid filters. Shunt APF is one of the most popular harmonic newlinemitigation technique. This kind of filter attempts to restore the sinusoidal newlinenature of line current by injecting the opposite harmonics demanded by the newlineload side. The active filters are connected in parallel with the source and load newlineat Point of Common Coupling (PCC) to produce harmonic cancellation effect. newlineThe focus is to make the source current to be sinusoidal and in phase with the newlinesource voltage, attaining negligible Total Harmonic Distortion (THD) and newlineUnity power factor at source. newlineFurther, meeting the energy demand is yet another threat for the fast newlinegrowing countries. Burning of fossil fuels like coal, diesel, wood and so on newlinehelps to meet three fourth of total global energy demand newline