Automatic solar tracking system

 
Favorable conditions for maximum power point tracking
MPPT works under conditions where extra power is required and this
•
For maximum power extraction from MPPT, cold and cloudy weather is most preferable. 
PV module have a higher efficiency during these climate conditions 
 
•
When the charge in the battery is at its minimum, the MPPT is at its excellence. Maximum 
amount of current is obtained by the MPPT in such lower battery conditions.
 

---

THEORITICAL BACKGROUND OF SOLAR TRACKER 
23
AEIE, RCCIIT 
MPPT solar charge controller 
There have been such charge controllers created and inscribed with maximum power point tracking 
algorithm to considerably increase the quantity of current supplied to the batteries from the 
photovoltaic modules. 
The alteration done in the process or the conversions taking place are shown in the figure below: 
Figure 3.8: Conversions taking place inside the Solar charge controller 
The work is to optimize the photovoltaic modules with the batteries. 
Some more examples of DC-DC converters: 
•
Boost controllers
•
Buck converters 
The implementation of the MPPT solar charge controller can be done in off-grid solar power 
system like 
1.
Stand-alone 
solar power system,
2.
Solar home system, 
3.
Solar water pump system, 
etc.
 
 
 

---

THEORITICAL BACKGROUND OF SOLAR TRACKER 
24
AEIE, RCCIIT 
Features of MPPT solar charge controllers
•
MPPT solar charge controllers are used to sense the alterations in the characteristics of a 
solar cell depicted by I-V curve for any applications which has PV module as energy 
source.
 
•
MPPT solar charge controllers are devised to withdraw maximum power from photovoltaic 
modules, they push the photovoltaic modules to work on voltage surrounding maximum 
power point to enable the extraction of maximum power.
 
•
MPPT solar charge controllers provides access to the user to operate PV module of voltage 
output greater than the driving voltage of battery system.
 
•
The complications of a highly efficient system’s output is negotiated by MPPT solar charge 
controller. Moreover, since the output of photovoltaic power is utilized to charge DC-DC 
converter, the MPPT solar charge controller can be made to operate with more energy 
sources.
 
•
MPPT solar charge controller can not only be utilize with PV modules but can also be 
subjected to the other various renewable energy sources. For example, smaller water 
turbines, wind turbines etc.