MPPT (Maximum Power Point Tracking) method of fuel cell based on double-sliding-mode surface adaptive equivalent sliding-mode control

The invention discloses a maximum power point tracking method of a fuel cell based on double-sliding-mode-surface adaptive equivalent sliding mode control. The method comprises the following steps: firstly, designing sliding mode surfaces for sliding mode control according to the output characteristics of the proton exchange membrane fuel cell, including a sliding mode surface for searching a maximum power point and a sliding mode surface for tracking and stabilizing in a maximum power output state; by using the double sliding mode surfaces, a complex optimization problem is converted into a traditional tracking problem, so that the design of the sliding mode surfaces has more flexibility. Secondly, selecting a generalized superhelix algorithm as a control law, and applying an equivalent sliding mode control method; a sliding mode surface switching strategy is designed, whether an operation condition changes or is in a change process is monitored, whether a current working point is an MPP is judged, and a sta