Voltage regulation of soft switched interleaved boost converter using fuzzy proportional integral controller

Abstract

This paper discusses about a fuzzy PI controlled three-stage soft switched interleaved boost converter with improved switching method. The proposed fuzzy PI controller has been compared with theproportional integral controller. The proposed fuzzy PI controlled soft switched interleaved boost converter model has been developed and tested in MATLAB/SIMULINK environment. Performance of the designed controller is tested under different loading constraints and step change for reference voltage conditions. Four performance parameters are taken consideration for the analyses such as integral of time multiplied absolute error, integral of squared error, integral of absolute error, and settling time for an effective comparison. From the simulation results, fuzzy PI controlled soft switched interleaved boost controller has exhibited better performance than PI controlled soft switched interleaved boost converter. Experimental verification has also been conducted to check the effectiveness of the proposed fuzzy PI controlled soft switched interleaved boost converter.