Difference between Solar Tracker and MPPT

The publish investigates two widely used solar harnessing counterparts the MPPT as well as the solar tracker, and figures out the significant issues between these two exceptional free energy spinning devices.

It’s factual that our earth is graced with many different free energy sources such as wind energy, hydro energy, sun or solar energy etc but unless these are definitely contained and captured optimally the resources could simply get wasted.

Taking into consideration this essential fact, two major systems were designed through MPPT circuits, and mechanical solar trackers for managing solar energy most appropriately and sensibly.

On the other hand a layman in the field usually often get confused relating to the distinction between these systems and usually get ill-informed by way of quite a few myths and inaccurate facts.

This informative article is especially published for identifying the many benefits and drawbacks these particular two prominent solar harnessing machines, particularly the MPPT and the Solar Tracker.

Let’s discover which gadget wins the race quality and performance wise by way of the following information:

MPPT vs Solar tracker

MPPT is the acronym for Maximum Power Point Tracker, as the title recommends this device is built to take out maximum achievable VxI or wattage from the panel and produce it to the load.

An MPPT will generally attempt to carry out two main behavior throughout use: To begin with, it would observe the solar panel maximum obtainable power (V x I) and try to produce the nearly all of it across the output or the related load.

More over, it would monitor that the load would not make an attempt to hog the panel by getting rid of unwarranted or infeasible amount of watts often as a result of a short circuit or shunting of the output leads of the MPPT.

If such a problem is discovered the MPPT’s “shut down” feature promptly activates with the intention to correct this strange or inappropriate load scenario.

How an MPPT performs

Believe we have now a solar panel with the following features associated with an MPPT for charging a 12V battery:

Volts: 24V

Curent: 2.5amps

wattage: 24 x 2.5 = 60 watts at optimum sunshine conditions.

Optimum or peak sunshine relates to a stage all through the day when the sun rays are almost perpendicular to the surface of the solar panel, because this situation is compromized with the sun’s changing position the output from the panel also is afflicted with and is dropped consequently.

All through optimum sunshine, the MPPT would probably attempt to produce, and charge the battery with 12V @ 60/12 = 5 amps.

You will notice that here the current to the battery is improved and has become doubled in an effort to continue the net input to output wattage ratio regular and effective.

As a result the process makes certain that the battery which despite the fact that has a much lower voltage features than the panel proceeds to get optimum power from the panel, that is certainly at the rate of 12 x 5 amps = 60 watts.

This is exactly the best part and beneficial function of MPPT chargers compared to other forms of regular chargers.

On the other hand when sun light starts decreasing as the day takes off to dusk, the panel wattage also commences to break down consequently, precisely what does the MPPT achieve now? Would it continue to offer you the same amount of power that it was dispensing in the course of the peak sunshine?

The response is no, the MPPT simply retains tracking the maximum accessible power from the panel and reproduces the same at its output load, this means if the panel voltage and wattage lessens to say, 20V @30 watts, then the 12V battery only functions in acquiring 12V at 30/12 = 1.5amps charging rate.

Despite the fact that the MPpT remains maintaining the input/output ratio to unity by offering the same amount power to the battery that’s being supplied by the panel, but it’s may not be able to restore sun ray’s angle of likelihood.

This is exactly one big negative aspect with MPPT trackers, whose power manufacturing capability is confined to the angle of sun rays on the panel, and it evolves into “helpless” as sun commences receding.

And so an MPPT might not be in the position to take the advantage of the sunlight the whole day. So if we take a look at the performance of the MPPT with reference to the sun’s precise dispensing power, we will probably find it to be around just 50% or even less.

The positive factors of MPPT circuits are: They are compact, solid state, extremely effective than other models of chargers and does not implement bulky mechanical assemblies for the implementations, on the other hand the huge disadvantage is that these are definitely struggling to track the rays of the sun as well as are not able to take the total advantage of the sun’s vast energy output.


How Solar Trackers Operates

Solar trackers are electro-mechanaical systems manufactured to track the sun rays practically, indicating the solar panel keep on changing it’s surface orientation in accordance with the sun’s shifting positions such that it retains a perpendicular angle with the sun rays the whole day.

The above movement is carried out making use of motors and an LDR sensor circuit. The LDR sensor circuit regularly detects the likelihood of sun rays and instructs the motor to turn the panel consequently such that the panel keeps tilting from east to west fraction by fraction. A solar tracker even offers the ability to take a look at an overcast condition and adjust the panel for acquiring the recommended or optimal angle of the sun rays.

This potential of a solar panel makes it considerably advantageous in comparison to an MPPT since it has the ability to generate and accumulate almost 95% of the accessible solar energy at any quick the whole day.

Despite the fact that a solar panel evolves into attributed with the above function, it will not likely contain the potential to transfer a dropped voltage at the output into a consequently boosted current as we researched in the above discussion making use of an MPPT device.

So in case a 24V solar tracker technique is directly linked with a 12V battery, despite the fact that the panel would continue checking the sun and create optimum power all through the day, the battery might not be recommended with a doubled current, indicating with the above talked about features the solar panel which contains the potential to deliver 2.5V amps at 24V will remain to render 2.5 amps to the battery despite the the boosted 5 amps as made by the MPPT.

Here the MPPT demonstrates its metal since its above ability evolves into essential and major and will never be forgotten about.

For that reason it implies that an MPPT can never be overlooked even if a solar tracker is being employed, and it needs to be in addition employed with a solar tracker that allows you to make the combination deadly strong and almost 100% effective under all conditions.

This combination makes certain that the user is in a position realize the maximum from the accessible solar panel and the sunshine, despite the fact that this might signify some heavy investments at the start, the costs could possibly be dealt with within a few seasons of use of the system.

In spite of everything comparing the two competitors we can consider and accomplish that the unique winner is the solar tracker system.

That being said, an MPPT also evolves into really important for attaining unbelievable achievements from a solar panel system and also when a fixed solar panel is chosen by an user.