Battery Charging Stage - Epever Tracer2206AN User Manual

that the MPPT mode can improve the usage of the solar energy resource. According
to our test, the MPPT controller can raise 20%-30% efficiency compared to the PWM
controller. (Value may be fluctuant due to the influence of the ambient circumstance
and energy loss.)
Figure 1-2 Maximum Power Point Curve
In actual application, as shading from cloud, tree and snow, the panel maybe appear
Multi-MPP, but in actually there is only one real Maximum Power Point. As the below
Figure 1-3 shows:
Figure 1-3 Mutil-MPP Curve
If the program works improperly after appearing Multi-MPP, the system will not work
on the real max power point, which may waste most solar energy resources and
seriously affect the normal operation of the system. The typical MPPT algorithm,
designed by our company, can track the real MPP quickly and accurately, improve the
utilization rate of the array and avoid the waste of resources.

1.5 Battery Charging Stage

The controller has a 3 stages battery charging algorithm (Bulk Charging, Constant
Charging and Float Charging) for rapid, efficient, and safe battery charging.
4