saber仿真的时候一直出现这个问题，刚刚接触电源这块，实在搞不定了，向各位牛人请教，不胜感激！
The static_ramping algorithm failed. Trying the den_ramping algorithm.Automatic algorithm selection exhausted*** ERROR "ALG_ITERATIONS" *** Too many iterationsPartial results were written to the initial point "dcerr".
