Al-Iraqia Journal for Scientific Engineering Research (Dec 2023)
Design and Implement of Step-Up DC-DC Converter with a Professional Approach using MATLAB/Simulink
Abstract
Step-up converters find extensive application in various sectors, including powered vehicles, photovoltaic systems, continuous power supplies, and fuel cell systems. This paper describes the process of designing and building a resistive load step-up (boost) converter, which is a widely used industry application for increasing the direct current (DC) input voltage. This study focuses on ascertaining the appropriate values for the inductor and capacitor within the circuit. The design primarily emphasizes continuous mode operation, involving varying voltage inputs of 10V and 20V DC, while employing a switching frequency input of 25 kHz with the IGBT serving as the switching device. The design evaluation of this circuit aims to regulate the input voltage to support a stable output voltage of 30 VDC, with a simulation power conversion efficiency of 96.18 percent for the input voltage,10V, and a simulation power conversion efficiency of 96.08 percent for the input voltage,20V. This examination also incorporates the requirement of a ripple inductor current, which should not exceed 25% of the total inductor current, and an output voltage ripple is less than 1%. The circuit design parameters are determined based on factors such as output voltage, inductor voltage, and inductor current waveform. MATLAB Simulink software will be used to check the circuit design, thus confirming the agreement between simulation results and theoretical predictions. The simulation results provide compelling evidence that the established model proficiently maintains the output voltage under diverse input voltage scenarios. As a result, these parameters are suitable for the construction of a fully operational boost converter circuit. This paper systematically presents all objectives, calculations, experiments, data, and results in a comprehensive manner.
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