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Tuesday, 9 May 2017

PIC16F88 BASED MPPT CHARGE CONTROLLER WITH 3-LEVEL CHARGING

What is Mppt( Maximum power point tracking) ?
"We use MPPT algorithm to get the maximum available power from the Photovoltaic module under certain conditions"


How MPPT works  ? Why 150W solar panel does not equal to 150 w?
For example you bought a new solar panel from the market which can deliver 7 amps current at a maximum sunshine, under charge the setting of a battery is configured to 12 volts : 7 amps times 12 volts = 84w (P=V*I) You lost over 66 watts - but you paid for 150 watts. That 66 watts is not going anywhere, but it,s due to the poor match of the solar output current and battery voltage .


After using MPPT algorithm we can get the Maximum available power from solar panels under any condition. 
Battery gets is now 12 amps at 12 volts
Output power is equal to p= V*I p=12*12=144w
Now you still have almost 144 watts, and everyone is happy.



Specification of the project 

1.This project is Based on MPPT(Maximum power point tracker) algorithm

2. LED indication to show the low mid and high level of charge state 

3. PIC16F88 with 3-Level Charging supports 12V battery charging as well as 24V battery charging upto 250AH

4. Lightning /Over voltage Protection

5.  Protection For Reverse power flow

6. Over load & Short Circuit protection

7. A thermistor for the monitoring of the battery temperature

8. Use PWM tracker stage and buck-boost converter stage to extract maximum  available power
9.Charge your Cellphone, tablets any gadgets throug USB port ( you can add this option) 
10. You can verify this schematic easily by making a simulation in proteus or multisim to check accurate voltages in testing point(Tp). 
Schematic Diagram
PIC16F88 BASED MPPT CHARGE CONTROLLER WITH 3-LEVEL CHARGING


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