文字说的是这样的，An error occurred while running the simulation and the simulation was terminatedCaused by:Derivative of state '1' in block 'pmsg_model14/MPPT/Transfer Fcn' at time 0.24845145715196404 is not finite. The simulation will be stopped. There may be a singularity in the solution. If not, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances)