A robust flyback converter based on high order sliding mode control for fuel cell

In the process of power generation by hydrogen energy, the application of fuel cell has been used widely. As we all known, it often appears that the randomness of hydrogen, oxygen input and power output load, which puts forward higher requirements for the robust design of power converters. The power converter based on traditional sliding mode due to its discrete control law exist inevitable chattering phenomenon. In order to conquer the serious problem, this paper presents a novel avoidance chattering Flyback converter based on the super-twisting sliding modes. To remove the intermittent disturbance in the new energy power generation, especially in fuel cell system, this paper compare the effect of the converter controlled by super-twisting sliding mode controller with the classic PI controller in a Flyback converter as an example. The simulation results show that: Under the condition of large disturbances in input and output, the converter controlled by super-twisting sliding mode has stronger robustness.