Study feasibility of wind turbine 2kW home?

Renewable energies except solar electric or thermal (seeforums dedicated below): wind turbines, energy from the sea, hydraulic and hydroelectricity, biomass, biogas, deep geothermal energy ...
Kenny-k
I understand econologic
I understand econologic
posts: 95
Registration: 10/12/15, 23:42




by Kenny-k » 29/12/15, 16:17

Ok that's what I understood level voltage to achieve.
The voltmeter of the controller being graduated from 20 to 20, it is difficult to read correctly, and my voltmeter to 30 or 50 € does not inspire me more confidence.
I did not look in detail at your Madep box but I imagine you have a built-in battery manager?
Pierre let me know that it was not made for wind turbine 2KW, you modified it?
Have you enjoyed a bit of wind since last week?

On my side, I will go up the mast of 3m to reach the 12m at the end of the blades, the wind comes mainly from the SE or SO here and it is right on the roof so the turbulence is not great.
I will take the opportunity to add silent blocks under the generator to weaken the vibration that is meant by moment.
0 x
User avatar
gust
I learn econologic
I learn econologic
posts: 36
Registration: 21/12/15, 12:12




by gust » 29/12/15, 16:59

yes I had wind, but the production did not exceed the 200w and very intermittently, not enough linear wind, especially gusts but my connection to the air to be suitable for production.
the wind is usually low in this spring of december 8)
But, my batteries are still full, the sun is there! that's the point of a hybrid system!

for the Madep, no problem, just a fuse to change, besides I do not see why the power of the wind turbine would play. it is the lightning that one seeks to divert towards the ground, and the line of the 220v (inverter) which one decouples to protect the network.

there is no battery controller on the case madep just protections.

the turbulence is the scourge n ° 1, there are the direct ones by an obstacle but also those which one presents less, those of rebound.
0 x
Kenny-k
I understand econologic
I understand econologic
posts: 95
Registration: 10/12/15, 23:42




by Kenny-k » 29/12/15, 18:40

Do you also perform your checks and measurements only with a multimeter?

Did you notice the tension between the phases?

Does this value reflect the efficiency at time "t" of the generator?

Should the max value be 96V?

Should the ideal value be 96V?

I will leave the 24H batteries on the UPS.
That makes 4H, the tension is balanced, it is between 12.57 and 12.64 according to the batteries for the moment.

I noticed that the last battery had a much lower voltage than the others immediately after stopping the wind turbine. (12.68 vs 13.10 of memory)
As indicated, this has rebalanced quickly, but of a more general nature, should we have permanently almost equal voltage on each battery when the wind turbine loads?
When the wind turbine is charging and consuming it via the inverter?
0 x
User avatar
chatelot16
Econologue expert
Econologue expert
posts: 6960
Registration: 11/11/07, 17:33
Location: Angouleme
x 264




by chatelot16 » 29/12/15, 22:15

the voltmetre is not a way to know if there is energy that goes into the battery

a battery has an almost constant voltage in the middle of its charge curve: the voltage does not mean much, and worse there is a certain temperature coefficient: a voltage variation over more than the temperature variation than the energy variation

the only meaning of the voltage is to say when it happens to be completely full or completely empty ... it is only in the end of the range that the voltage varies significantly

so it takes an hour amp meter on the battery
0 x
User avatar
gust
I learn econologic
I learn econologic
posts: 36
Registration: 21/12/15, 12:12




by gust » 29/12/15, 22:18

I use multimeter, ammeter clamp and the voltmeter of my controller, the voltage between two phases must be substantially close to the output.
this voltage increases, unladen, linearly with the speed of rotation of the wind turbine, but in charge it falls and those are the amperes that allow to establish the power gain.
the problem is that we do not have the power curve of the wind turbine so you need clamp ammeter.

the max value can not be 96V else you can not recharge your batteries beyond, it takes more source voltage than the batteries to recharge them

the wind turbine must be able to exceed the 120v load, in my case the lack of wind has not allowed me to observe more 120V load 2A, empty it rises to more than 200V
0 x
Kenny-k
I understand econologic
I understand econologic
posts: 95
Registration: 10/12/15, 23:42




by Kenny-k » 30/12/15, 14:46

Hello,

After 24h shutdown, the battery voltages are all between 12.69V and 12.79V.

So the batteries would be full.
I'm getting a clamp ammeter tomorrow.
0 x
User avatar
gust
I learn econologic
I learn econologic
posts: 36
Registration: 21/12/15, 12:12




by gust » 30/12/15, 14:54

they are full tone regulator normally divert the current to your load shedding resistors, hence the ammeter controller to 0 despite the wind .... to check with the current clamp!

me today I wind over 300w production is a good sign : Mrgreen:
0 x
Kenny-k
I understand econologic
I understand econologic
posts: 95
Registration: 10/12/15, 23:42




by Kenny-k » 30/12/15, 15:22

So if I did not feel the heat resistance is maybe also because of the wind that was too weak?

When you say 120V mini in charge or 200V empty, and the voltage between phase must be substantially the same as output.
The voltmeter of your controller displays these measures well?

If I cut the battery circuit at the output of the controller and restart the wind turbine.
The production is supposed to go to the resistance and the voltmeter to approach the 200V?

My 3-position lightning protection box (normal, open, short-circuit), I thought that in the open position I was on no-load charge so I did not cut the circuit to the batteries yesterday when I measured the voltage between the phases. I didn't notice any difference between "open" (wind turbine turns but controller receives nothing) and "normal" (wind turbine turns and controller receives)

I have about 30km / h of wind this afternoon so the best I have had so far.

I imagine that the diode and the voltmeter are badly wired.
0 x
Kenny-k
I understand econologic
I understand econologic
posts: 95
Registration: 10/12/15, 23:42




by Kenny-k » 30/12/15, 15:51

The voltmeter of your controller remains at zero when your wind turbine is stopped?
Here are some photos, if you could check that your diode reverse polarity goes to the - battery of the controller, I do not see other possibilities of errors for a Chinese 8 years.
Image
Image
Image
Image
0 x
User avatar
gust
I learn econologic
I learn econologic
posts: 36
Registration: 21/12/15, 12:12




by gust » 30/12/15, 16:07

rather 120V "max" in load for a 98V system

200v empty, this is where I chose to have my controller couple the wind turbine to the load shedding resistor to protect it, it can surely climb much higher but risk disintegration. in general, you never leave a wind turbine empty! otherwise it will not last long ...

my controller leaves it empty, until it reaches a speed of rotation sufficient to produce, it helps it to start then torque the load.

on my readings at the phases there is a difference of about 10% to the ladle (to check) below compared to the DC output

a wind turbine can not be both empty and in production (resistance or load), vacuum is open circuit, I forbid you formally you may damage the generator, the blades, etc. : Evil:

your box of protection, you have the reference?
0 x

 


  • Similar topics
    Replies
    views
    Last message

Back to "hydraulic, wind, geothermal, marine energy, biogas ..."

Who is online ?

Users browsing this forum : No registered users and 270 guests