Air flow and back pressure control method of fuel cell system

• Main Authors: SONG YAZHAO, CHEN PENG, LIU YAKUN
• Format: Patent
• Language: Chinese; English
• Published: 16.12.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses an air flow and back pressure control method of a fuel cell system. In one control period, the method comprises the steps that flow deviation and pressure deviation are obtained, the flow deviation represents the difference value between the set flow value and the actual flow value of gas at the cathode inlet of the fuel cell system, and the pressure deviation represents the difference value between the set pressure value and the actual pressure value of gas at the cathode inlet of the fuel cell system; working condition types corresponding to the flow deviation and the pressure deviation are determined; an air compressor or a back pressure valve is selected as target adjusting equipment according to the working condition type; and the target adjusting equipment is controlled to execute corresponding adjusting operation, the corresponding adjusting operation of the air compressor comprises increasing or decreasing the rotating speed of the air compressor, and the corresponding adjustin