FUJI BUCK MPPT Solar Charger
For trade enquiries contact us at fujielectronika@gmail.comWhatsApp 9447105819. Finished Full unit and assembled PCB available.
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
- 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.
