Mathematical Modeling Of Sepic Converter With Continuous Conduction Mode (CCM) For Solar Maximum Power Tracking Application

In this paper, a single ended primary-inductor converter (SEPIC) is applied for the solar power application. The solar power is tracked electrically using DC-DC converter such that the maximum power is extracted from the solar panel throughout its operation. The proposed converter uses a single inductor to allow a continuous-conduction mode by making the current never fall to zero. The proposed converter is controlled using the fuzzy logic controller that operates both in buck and the boost operation; unlike the conventional methods the output is non-inverted. The SEPI Converter used is more applicable for the maximum power tracking method because the output of the SEPIC is independent of the input voltage as the average current through the inductor is same as the load current. The proposed method is simulated using the MATLAB program. An experimental verification is done for a DC motor operated by Fuzzy controlled SEPIC and the results are shown