Modified proportional integral controller for single ended primary inductance converter

The article highlights and optimizes a controller for the single ended primary inductance converter (SEPIC) direct current-direct current (DC-DC) converter. SEPIC adjusts range of dc input voltages delivers constant stable output voltage. Three different models are presented in order to derive its transfer function. Being 4th order, an approximation method reduction this function 2nd 1st is implemented. Two methods controlling presented, first one based on guessing techniques second explains design steps internal model control (IMC). Furthermore, improvement IMC proposed results were shown discussed. integrating “process model” operation actual system. By using original system, it expected that will be able achieve desired results. Control schemes shown. response was tested with mathematical batteries supercapacitors MATLAB, as non-ideal DC-sources, presented.