conventional charge controller, the solar panel's voltage will stay at around 12V,
failing to deliver the maximum power. However, the MPPT controller can
overcome the problem by adjusting the solar panel's input voltage and current in
real time, realizing a maximum input power.
Compared with conventional PWM controllers, the MPPT controller can make the
most of the solar panel's max. power and therefore provide larger charging current.
Generally speaking, the latter can raise the energy utilization ratio by 15% to 20%
in contrast with the former.
Fig. 1-2 Solar panel output characteristic curve
Meanwhile, due to changing ambient temperature and illumination conditions, the
max. power point varies frequently, and our MPPT controller can adjust parameter
settings according to the environmental conditions in real time, so as to always keep
the system close to the max. operating point. The whole process is entirely
automatic without the need of human intervention.