Certain investigations on design and implementation of novel approach of embedded impedance source inverter for three phase induction motor

Abstract

Inverters are devices which convert DC input voltage to AC output newlinevoltage in accordance with intended frequency. Conventional inverters tend to newlinefail during the switching process, which interrupts the output power leading to newlinean unprecedented damage to the equipment and machines. The disruption in newlinepower output counteracts with the system fed drive output causing colossal newlinedefacement of the products. In order to overcome these issues, a number of newlinetechniques have been proposed by researchers namely, appending additional newlineinverters, conjoining a supplementary inverter leg which is rightly aligned to newlinethe main leg, or concatenating more number of batteries etc., In such cases, newlinethe structure becomes too complex and intricate. Further, the construction newlinecost will be exorbitant posing a threat to cost efficiency and affordability. In a newlinebid to address these issues, different control mechanisms have been developed newlineand deployed. newlineControl mechanisms (PWM techniques) namely Single Pulse newlineWidth Modulation, Multiple Pulse Width Modulation and Sinusoidal newlineModulation are simulated. It is observed that when the switching process newlinefails, the performance of these modulation mechanisms is found to be newlinedissatisfactory as the output power gets varied or disrupted. However, the newlineinitiated pulse signal is coherent. The Space Vector modulation technique newlinedetermines that the pulse signal initiated can be modified to any state from its newlinecurrent state. Various literature reviews show that the Impedance Source newlineInverter (ZSI) can confront switching failures when compared to the newlineconventional inverters. newline