The output of the solar cell module varies with the solar radiation intensity and the temperature of the solar cell module itself (chip temperature).  In addition, since the solar cell module has the characteristic that the voltage decreases with the increase of the current, there is an optimal operating point that can obtain the maximum power.  The intensity of solar radiation is changing, and obviously the best working point is also changing.  Relative to these changes, the working point of the solar cell module is always at the maximum power point, and the system always obtains the maximum power output from the solar cell module. This ANHUI JNGE control is the maximum power tracking control.  The characteristic of inverter used in solar power generation system is that it includes the function of maximum power point tracking.