FUEL CELL OPTIMUM OPERATION POINT TRACKING SYSTEM IN POWER SUPPLY DEVICE USING FUEL CELL, AND POWER SUPPLY DEVICE PROVIDED WITH THIS FUEL CELL OPTIMUM OPERATION POINT TRACKING SYSTEM

摘要

A fuel cell optimum operation point tracking system for detecting the optimum operating voltage of a fuel cell allowing for not only temperature dependency but chemical reaction as output characteristics to enable the optimum operation of a fuel cell. The fuel cell optimum operation point tracking system is characterized by comprising a fuel cell output voltage variaion instructing means (11) that changes a voltage output by a fuel cell (1) to up to the maximum voltage of a maximum power point tracking control when a power supply device (2) is started, a fuel cell output power measuring means (12) that measures its power condition, a fuel cell maximum power point judging means (13) that monitors an output power measured by the fuel cell output power measuring means to judge the maximum power point of a fuel cell output power, and an optimum operation point variation instructing means (15) that gives a minute voltage variation amount near the current operating voltage value while constantly keeping a power supply operation in a stable condition to thereby monitor a maximum power and track an optimum operation point.