Voltage and current based MPPT of fuel cells under variable temperature conditions

There are a few devices for storage the electrical energy. Fuel cell (FC) is one of them. FCs have advantages such as high efficiency, low emission (of pollutant gases), and flexible modular structure In this paper Voltage-based (VMPPT) and current-based (CMPPT) maximum power point tracking is proposed to minimizing the fuel consumption of a fuel cell. In these two methods, first a model is used for configuring the polarization curve and then the effect of temperature variation investigates on the characteristics of FC. In VMPPT technique the relation between open circuit voltage and the voltage corresponding to maximum power of FC is investigated in for different temperatures. In CMPPT technique we find it between short circuit current and the current corresponding to maximum power of FC is investigated. Simulations are carried in MATLAB environment.