PV array with DC/DC Buck Converter

I did a simulink simulation for PV array with DC/DC Buck Converter to charged the battery. But i after try to simulate it i found that my PV voltage is close to my Output Voltage. It seems like its not a correct results. The parameter of PV Voc (19V), Isc (0.124A) ,Vmp (15.4V), Imp ( 0.1A) is set by my ownself from a solar panel datasheet. While the converter should step down the voltage to 8.4V (2s lithium ion battery). P&O MPPT already been implement in this circuit.

Answer 1

[Sabin]

Without the actual model we cannot point to any specific problem. It may be parameterization or design of MPPT. A good starting point in learning about PV systems and how to control them is this example in Simscape Electrical:

https://www.mathworks.com/help/sps/ug/stand-alone-solar-pv-ac-power-system-with-battery-backup.html