MPPT Solar Charger

FUJI BUCK MPPT Solar Charger

For trade enquiries  contact us at fujielectronika@gmail.com

WhatsApp  9447105819. Finished Full unit and assembled PCB available.

                                              

          Three stage interleaved MPPT 

 

      Single coil buck MPPT 

    

 

PRODUCT  FEATURES-

• DSP BASED  MAXIMUM POWER POINT TRACKING SYSTEM
• LCD &  LED indication
• Full power and soft start
• Low voltage protection.
• Over voltage protection.
• Over load protection.
• Temperature controlled fan. Starts>=70 degree and stop <=55 degree
• Over temperature protection.
• DSP BASED control.
• Single stage and Three phased interleaved switching (available)
• Switching element – MOSFETs
• Charging algorithm – Four-level charge with CC, CV and  Float .(depends the models)
• Switching frequency in each phase is 20KHz, and switching frequency in the final output 40KHz.
• Low ripple current in input and output due to inter-leaved switching.

PARAMETERS DISPLAYED.-

• Solar voltage
• Solar current
• Battery Voltage
• Battery current
• Cumulative units of energy harvested

 Protections

• Panel reverse protection
• Battery full charge cut-off
• Lightning protection

What is MPPT and  how does it work ?

• Let us assume in a open circuit solar panel voltage is 22V.  and let us short the terminals of the solar panel
• Then check the current , the short circuit current is 10AMPS.and the voltage across panel is zero(0)volt.
• In both situations , we will get zero( 0 ) watts from solar panel.
• i.e,   22V * 0 Amps = 0 Watts  and  0 V * 10 Amps = 0 Watts.
• Example, the following values are not actual values they are given only for understanding the principles of  MPPT.
• Let us draw 0 A from the panel, the panel voltage is 22 V output =0 Watts. ( 0 A * 22V = 0 Watts)
• Let us draw 1 Amps from the panel, the panel voltage is drop to 20 V and output = 20 Watts .(1A *20V=20W )
• Let us draw 2 Amps from the panel, the panel voltage is drop to 18V and output = 36 Watts. (2A *18V=36W )
• Let us draw 5 Amps from the panel, the panel voltage is drop to 17 V and output = 85 Watts (5A *17V=85W )
• Let us draw 8 Amps from the panel, the panel voltage is drop to 16 V and output =128Watts. (8A *16V=128W)
• Let us draw 8.5 Amps from the panel, the panel voltage is drop to 12 V and output = 102 Watts. (8.5A *12V=102W )
• Let us draw 9 Amps from the panel, the panel voltage is drop to 2 V and output = 18 Watts. (9A *2V=18W )
• Let us draw 10 Amps from the panel, (that means short circuit the panel)  the panel voltage is drop to 0 V and output = 0 Watts. (10A *0V= 0W )
•  So, if we draw less current from the panel, the panel voltage will be more. And,  we draw more  current panel voltage will be less.  
•  But the output (panel voltage * panel current) is more at a certain point. This point is called,  Maximum Power  Point.
•  This point will vary according to the intensity of the sunlight and the type and quality of the solar panel.