DEVICE AND METHOD FOR CONTROLLING FUEL CELL SYSTEM

摘要

A control device for controlling the operation of a fuel cell system is disclosed, including a microprocessor, a voltage detection circuit, a curren t detection circuit, a hydrogen pressure detection circuit, a temperature detection circuit, an air flow rate control circuit that is controlled in a pulse widt h modulation manner, and a pulse signal generation circuit. The air flow rate control circuit is controlled by the microprocessor for regulating the air flow rate through an air supply conduit in a pulse width modulation manner in accordan ce with output current of a fuel cell stack. The pulse signal generation circui t is controlled by the microprocessor to generate pulse signals for controlling hydrogen flow through a hydrogen supply conduit. The control device monitors the operation conditions of the fuel cell system and performs a preset, control process to control the operation of the fuel cell static so as to optimize t he efficiency and overall performance of the fuel cell system.