Performance Evaluation Of High StepUp Converters Using Various Control Methods

Abstract

newline ABSTRACT newline newlineIn recent days, the DC to DC converters Established quite quickly and is well applied in different applications such as medical equipments, robot systems, computer peripheral equipments, industrial drive and telecom. Traditional DC to DC step-up converters are not capable to offer more step-up voltage transfer gains due to the influence of the semi-conductor power switches, the power diodes rectifier and the corresponding series resistance of the storage components. The crises in traditional DC-DC step-up converters are overcome by the transformerless DC-DC step-up converters. The transformerless DC to DC step-up converters are used to obtain high boost-up voltage transfer gain, simple structure and only one power stage in comparison with traditional converters. newline newlineHigh step-up converters are switched among several sub- topologies for switches turn-on and turn-off and they belong to variable structure control system. High dynamic performance and good stability are required for such a power converters. Any appropriate method towards nonlinear intelligent control can be used to design power converter based applications. The main objective is to select a controller that can boost converter newline newline newline newlineefficiency, disrupt rejection (line as well as load fluctuation), decrease the impact of element fluctuation etc. Given its excellent behavior when applied to complex and non-linear systems, Fuzzy Logic Control (FLC) has received considerable attention. Since the fuzzy control rules are not derived from heuristic system behavioral information, FLC architecture involves precise mathematical modeling nor complex computations. newline newlineIt is in this scientific work that proposes to plan the various control methods (namely: PI controller, SMC and FLC) for high step-up DC