Not much over the other.If you use both, their effects will multiply.
Not much over the other.
One will not double the other.
How did you get 1.15 and 1.2?Multiplication is not doubling. If, for example, tracking increases production by 15% and MPPT by 20%, the combined effect will be roughly 1.15 x 1.2 = 1.38 (38%).
There will be some interaction effects, such as tracking panels will get warmer than fixed ones, and then higher temperature will decrease MPPT gain, but such effects are going to be small.
Q1. Of course. However, most MPPT controllers will be buck only.
Q2. The highlighted voltage sensor and temp sensor is used to control battery charging. Colder batteries require more voltage. The highlighted current sensor cannot be used to control battery charging, because it cannot measure the current into battery - it doeasn't take into account the current taken by inverter. The Current/Voltage sensors can be used to find the MPPT point. However, the other Current/Voltage sensors on the input, which you didn't highlight, can be used for this purpose too, IMHO with greater success.
Q3. i. I guess some sort of wireless control.
ii. You don't really need LCD and buttons, but it'll be hard to sell a controller without ability to change settings.
Battery is not connected to the panels directly. Usually, MPPT controller has an input capacitor, which servers as a load to the panels. Looking at the graph, charging capacitor more will move the point to the right, charging it less will move the point to the left. The MPPT controller controls how much energy is taken from the capacitor to batteries and by doing so it maintains the optimum voltage on the capacitor.
Even being buck (i.e. step down) only, it can still control the optimum power point efficiently? Perhaps, there is also boost MPPT controller too.
Perhaps, then that current sensor is unnecessary. I didn't highlight other two voltage and current sensors because I was able to understand their overall function.
What kind of setting would you need to change? Can't MPPT automatically find the optimum point.
It can also display things like battery charge and power from the planel.What kind of setting would you need to change? Can't MPPT automatically find the optimum point.
They're doing completely different things, so one doesn't substitute for other.
Tracker rotates the panel so that it is always looking at the sun, thus increasing the insolation. This can increases output compared to fixed location by up to 50%. From economic's standpoint, with today's prices for the panels it is cheaper to buy more panels than to setup a tracker.
MPPT keeps panel voltage at the optimum point, so that evergy produced by the panel at the given insolation is as high as possible. It adds up to 30% to the production. MPPT controller costs more than a regular one. It definitely makes sense if you have many panels, but for a small panel the gain in production may not pay for the extra-expense of the MPPT conroller.
If you use both, their effects will multiply.
I have been looking for some kind of a table or graph which shows that how the efficiency increases when both solar tracker and MPPT are used with a panel. for the last two hours without any success. Could you please help me with it? Thank you.
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