Get it as soon as tue, dec 14.
Solar panel voltage regulator or buck converter.
It is essentially a buck converter, but in order to extract maximum energy it needs to be smart.
When we think of mppt, we generally think of microcontrollers and complex power computing algorithms, but such computing power is not actually required.
This circuit makes sure that the voltage from the solar panel never exceeds.
Since panels are connected in series, their combined voltage is 38v * 2 = 76v.
Their amperage is 330w ÷ 38v = 8.7a the voltage of the battery is 12v.
A buck converter (step down converter) is a dc to dc power converter;
Which steps down voltage (while stepping up current) from its input (supply) to its output (load).
The buck/boost will operate on the input voltage given by the solar panel.
There is some efficiency loss.
Buck or boost depends on your voltage level.
There are a few aspects here which needs to be considered.
So if we factor that all in, we have (14.51v/12.5v) x 3.510 amps x 93% eff = 3.79 amps.
Depending on the size of the load, the solar (input) voltage may drop.
If solar output voltage is always lower than battery charging voltage, then boost.
Solar panel's voltage are steped down from (19 v to 8 v) very efficiently (using #buck regulator)because my ups's inverter also works good on 8 v as well.
Every mppt solar charge controller and grid tied inverter is a form of buck/boost power supplies.
The internal switch control will determine if it works as buck or as boost (obviously, if the solar voltage is lower than 5v it is a boost, if it is higher it is a buck).
The simplest way to reduce the voltage of a dc supply is to use a linear regulator (such as a 7805), but linear regulators waste energy as they operate by dissipating excess power as heat.