Patent ID: 7564211

Claim:
A power generation control system for a fuel cell, comprising: a chargeable/dischargeable unit connected to the fuel cell, for being charged with electric power from the fuel cell and discharging electric power to a load; a target power computing unit for computing a target power to be generated by the fuel cell; a power-lowering request detection unit for detecting a power-lowering request to the fuel cell, comprising a cell voltage detection unit for detecting a cell voltage of the fuel cell, wherein the power-lowering request detection unit determines whether or not the power-lowering request is present based on the cell voltage detected by the cell voltage detection unit; an available power detection unit for detecting available power of the chargeable/dischargeable unit; a power extraction limiting unit for limiting electric power to be extracted from the fuel cell based on the power-lowering request detected by the power-lowering request detection unit and the available power detected by the available power detection unit; and a power extraction control unit for controlling electric power to be extracted from the fuel cell based on the target power computed by the target power computing unit and an output of the power extraction limiting unit, wherein, as the power-lowering request detection unit detects the power-lowering request, the power extraction limiting unit reduces electric power to be extracted from the fuel cell by an amount less than the available power of the chargeable/dischargeable unit.