Effective Power Utilization Strategy of Fuel Cell System Using FSTP Sepic Inverter

Abstract

Four-Switch mode Three-Phase (FSTP) inverter is considered as an advanced inverter structure to diminish the price, complication, dimension and losses during its switching. The traditional FSTP inverter usually achieves merely buck DC- AC type conversion and highest voltage of the FSTP structured inverter is same as V/2√3. Therefore, the output side line voltage cannot go beyond this rate. To improve the VUF( voltage utilization factor) and reliability of the conventional FSTP inverter, the FSTP SEPIC inverter is considered in this research work, in which both the buck and boost DC-AC conversion is achieved. The double integral Sliding-Mode Control (SMC) is utilized to optimize its dynamics and also it is utilized to confirm whether strength of the whole system at various operating situations is upto the limit. Parameter design, element ranges, and the working of the FSTP-SEPIC based inverter are also offered. The MATLAB Simulink model is used to validate the concept of power utilization of Fuel Cell (FC) by the FSTP-SEPIC inverter. Simulation result shows the efficiency of the inverter , both the buck and boost operation with FC input. The inverter efficiency and other outputs of buck and boost inverter operation with FC input is exhibited using Simulation.