Simple MPPT Technique for DC-DC Converter In Fuel Cell System

Abstract

This paper presents the simulation of fuel cell mathematic model interfaced with DC- DC boost converters. The drawbacks of the fuel cell stack are that it lacks maximum power to generate the suitable application and high input current ripple. So, the maximum power point tracking (MPPT) technique of voltage constant controller is implemented to the system to extract the maximum power from the fuel cell. The MPPT technique forces the fuel cell to meet the maximum power that the fuel cell can generate. This MPPT method increases the efficiency of power delivered from the fuel cell. The benefits of the converter chosen are the interleaving technique used in converter reduced the current ripple that could damages the fuel cell stack. The converters chosen is the conventional dc boost converter and interleaved boost converter that will be simulated along with the MPPT algorithm in MATLAB/Simulink environment. The interleaved boost converter has also chosen for its advantages of reduction of passive component's size, as well as reduced the current ripple. It is proved that the MPPT method of constant voltage gives a stable and linear performances in designing a high efficient fuel cell system.