CLOSED LOOP CONTROL ANALYSIS OF MODIFIED SEPIC CONVERTER
Abstract
The objective of this paper is the examination of closed loop control analysis for a five-level bridge inverter coupled Isolated Single Ended Primary Inductance Converter (SEPIC) topology. The proposed SEPIC converter structure is based on conventional SEPIC converter design except the change that instead of the inductor (L2), a linear transformer will deliver two added isolated voltage levels to the inverter. Low power Fuel Cell based renewable energy system is used as the input source. A battery is kept as a secondary supply/storage to the converter topology to enhance the voltage stability at the source-end. A comprehensive assessment of the proposed model with a Proportional Integral (PI) controller and Fuzzy Logic Controller (FLC) under different source and load variations is also evaluated. PI controller is used to prove the cogency of the proposed FLC controller performance in the above mentioned conditions. Adequate MATLAB/Simulink simulation results are presented for the modified five-level bridge inverter coupled Isolated Single Ended Primary Inductance Converter (SEPIC) topology discussed above. Keywords: Battery, Fuzzy Logic controller, Modified SEPIC converter, PI controller.
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International Journal of Engineering Technology and Computer Research (IJETCR) by Articles is licensed under a Creative Commons Attribution 4.0 International License.