High-efficiency industrial waste hydrogen power generation system and control method thereof

The present invention is an high-efficiency fuel cell system using industrial waste hydrogen and its control method. The system determines the operating voltage of the stack module by measuring the hydrogen concentration fed into the stack module. Therefore, the stack module does not need to undergo an electrochemical reaction in the case of hydrogen deficiency, so as to avoid damage to the stack module, and the stack module allows to generate the maximum electric energy under the maximum reaction efficiency. At the same time, by judging the hydrogen concentration of the remaining fuel gas to determine the timing of discharging the remaining fuel gas, the effect of maintaining the safety of the surrounding environment and protecting the environment can also be achieved.