Thank you for your answer.
Considering the functioning of a buck converter ( draws current from the panels while the switch is closed, dont draw current from the panel when it is open ) the power from the pannels is pulsed. In that situation can be complicated to find the power output from the panels to find if it is already on the maximum power point or not.
Because of that i did simulated the circuit with both a power source and a panel. The panel provided a constante output current even when it is not supling the load.
In a real aplication it would work like that ? the current would be constant or it would be pulsed ?
The purpose of this aplication is to charge the batteries with the maximum power suplied by the panel.
If the power from the panel is pulsed it can be hard to find if i am operating in the maximum power or not.
Am i right thinking this way?
you want the output forms from the converter? the converter has a PID control in order to keep a stable current at the charge (in order to do the CC/CV charching). I'm doing the simulation in PSIM. The output waves where the current is pulsed the that circuit with a DC source of 480V. The one where the current is constant is with a solar panel model from PSIM, where i introduce the values from the array of pannels ( Vmpp= 480 V, Impp = 16,1A , Voc = 600V , Isc = 17,12A ).
The idea is to implement the mppt with the buck converter in order to charge a battery pack with the maximum power from the panel.
Currently im still reseaching the best way to implement that. The buck converter is the easier to implement and to control as well as the one with least components.
Thank you.
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Hi
Are you able to show output wave forms with respect to different sources, hope you are doing simulation in PSIM it doesn't require any filtering for PV. Please post swtiching and out put when you connect PV.
thanks
Thank you for your reply Darla.
You want the output waveforms from the buck with the diferent sources? im using a C block to implement a constant current control on the load.
Im using Psim. Those wave forms are from the same circuit but one with a DC power supply and other with a Solar panel model with the sollar array values ( Vmpp 480V , Impp = 16.1A , Voc = 600V , Isc = 17.12A)
My doubt is in a real system, with the buck converter, if the system will behave as with the simulation with the power source or the simulation with the panel.
Thank you.
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Try to find any information about MPPT.
Hello Easyrider83,
thank you for the reply.
The ideia is to use the converter as mppt in order to allways charge the battery pack with the highest current possible.
I can find information about MPPTs but nothing tha clarifies my doubts.
Thank you.