MODELING, ANALYSIS AND SIMULATION OF A DC GRID SINGLE ENDED PRIMARY INDUCTANCE CONVERTER FOR DC LOAD

📄 Project Abstract

This research studied a circuit topology of a solar based Single Ended Primary Inductance Converter (SEPIC) system and a battery furnishing a permanent magnet dc motor with current via a dc grid. The complete model equations of the entire system were derived. Harmonic balance technique was used to determine the converter steady state and ripple quantities. Analyses investigating the relationship of the converter state variables as a function of its duty ratio were developed. Results show that operating the converter between 0 - 0.4 duty ratio give best system performances. On the other hand, results show that operating the converter above this range limits the converter optimal performance. The consequence of operating the system with duty ratios above 0.4 is that the ripples in the voltage and current waveforms increase. More so, results also show that for a steady state current of 12 A, for the permanent magnet dc motor in a period of low solar insolation, operating a Bi-directional ...