Abstracto

Fuel Cell Fed Single Stage Boost Inverter with Unique Impedance Network

K.Sruthi, C.B Saravanan

In many modern energy conversion systems, a dc voltage, which is provided from a sustainable energy source or energy storage device, must be boosted and converted to an Ac voltage with a fixed amplitude and frequency. The single-stage inverter circuit provides boost inversion ability which can eliminate the limitations of conventional voltage source inverter. By regulating the shoot-through zero state and the parameters of coupled inductor, the proposed inverter can boost the bus voltage and output desired output voltage even when input dc voltage is low. By controlling the shoot-through zero state when the coupled inductor is present, the fuel cell output voltage is controlled. When a very high boost gain is demanded, the duty cycle may come to its extreme and large duty cycles causes serious reverse-recovery problems. The single-stage operation of the converter may lead to improved reliability and higher efficiency .The results are obtained using MATLAB/SIMULINK software.