Certain investigations on Multilevel inverter based shunt Active power filter for power Quality improvement

Abstract

Electrical usage for industrial and domestic purposes is erratic newlinethese days. The advent of power electronic equipment and other nonlinear newlineloads results in harmonics generation and produces power quality issues. In newlinethis decade, the usage of nonlinear loads has increased drastically, so it has newlinebecome essential to pay more attention to power quality problems. newlineRestructuring industries with automation and using modern appliances in newlineelectronically controlled households emerge as highly efficient and costeffective newlinesolutions. Nevertheless, they provide improved performance, they newlineare sensitive to power disturbances caused by both utility and user. The newlinepower quality can have a direct economic impact on many industrial newlineconsumers. These problems are effectively addressed by Active Power Filters newline(APF) as Passive Filters have limitations of detuning, aging, resonance, and newlinemitigate few harmonic effects. Series Active Power Filters are considered as newlinecontrolled voltage sources and ensure the quality of voltage for the newlineconsumers. They provide a good solution for voltage swells and sags on the newlineload side. Shunt Active Power Filters (SAPF) concentrate on improving the newlinecurrent profile and show better performance than Series Active Power Filters. newlineSAPF is developed based on Voltage Source Inverter with Pulse newlineWidth Modulation technique and DC link. It becomes a viable solution for newlineharmonic mitigation, power factor correction, and reactive power newlinecompensation. The primary function of SAPF is to inject current which is newlineequal in magnitude but opposite in phase to the harmonic component at the newlinePoint of Common Coupling. A suitable control algorithm is significant for newlineregulating the DC link voltage in SAPF newline