Black Series 300 600 and 600S from Prevent

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dedeleco
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by dedeleco » 28/10/12, 21:43

Ruthenian wrote:In fact the AC and DC deformation take place as soon as the windmaster produces. Before no ...


logical, since without the windmaster which produces, there is no current required. Without current, the voltage is that induced in the coils, a good sinusoid in principle, but which should have a different amplitude between the two coils of 5 Ohm and that of 8 Ohm ????,
With current, the internal resistance of the coils, decreases the voltage induced in the RI coil, with a current adjusted to have a voltage above that rectified, which has the effect of cutting or clipping the sinusoid, as seen in oscilloscope, according to the current demand of the windmaster, variable according to the rectified voltage.

Also, it would be good to know the behavior of the wind turbine on resistive load, instead of the windmaster, in uniform and medium wind, as much as possible.

It would be necessary to measure everything, including this physics of induced voltage, of resistive voltage RI less, of the current I, (also variable with these switches) and of the switching of the diodes of the three-phase rectifier, every 60 ° of the three-phase on U and I.

So knowing after measurement and understanding, it will be possible to adjust the Windmaster as well as possible.
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Ruthenian
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by Ruthenian » 29/10/12, 06:59

dedeleco wrote:Without current, the voltage is that induced in the coils, a good sinusoid in principle, but which should have a different amplitude between the two coils of 5 Ohm and that of 8 Ohm ????,


The amplitude seems the same between the different wires. It is maybe the ohmmeter which deliriums a little ... the measurement on the ohmmeter does not fix, the values ​​keep changing, fluctuating (blade stopped bisensur because otherwise it is not even punishment).

also go to see the link for October 28, it's great anything (from 10 am):

http://blackwindturbine.com/courbe-prod ... ack600.php
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dedeleco
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by dedeleco » 29/10/12, 11:53

Ruthenian wrote:
dedeleco wrote:Without current, the voltage is that induced in the coils, a good sinusoid in principle, but which should have a different amplitude between the two coils of 5 Ohm and that of 8 Ohm ????,


The amplitude seems the same between the different wires. It is maybe the ohmmeter which deliriums a little ... the measurement on the ohmmeter does not fix, the values ​​keep changing, fluctuating (blade stopped bisensur because otherwise it is not even punishment).

An Ohmmeter sends a fixed current and measures the voltage associated with the current, and therefore another source of tension is not necessary, like that of a blade which moves even imperceptibly, because the ohmmeter measures 0,1V, often even less, with a few mA.
We can measure R by sending a stronger current with a battery or battery, and by measuring the voltage across the coil and the current by its voltage in a series resistor.
The measurement will be more precise.
All wires must be disconnected from the three-phase rectifier.

Is the sinusoid very beautiful, uncut, when the windmaster does not give power, at current given by the zero alternator ???

All measurements must be made without the windmaster on heating resistors, after learning a bit of the basics of physics necessary, to avoid obvious errors, clearly visible on the Vialle gadget.




also go to see the link for October 28, it's great anything (from 10 am):

http://blackwindturbine.com/courbe-prod ... ack600.php


The curve in recent days of moderate wind, probably with much less vortices, shows a huge difference in production in weak wind similar to that in strong wind (with vortices from another direction probably without close obstacles ????)
With or without swirls gives a nice difference.

Unless having read our posts, they started to fake the measures by changing scales, because, with Betz, 120W at 2m / s and 200W at 4m / S gives 4KW is well over 600W at 11m / s ??
Completely aberrant !!

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Obamot
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by Obamot » 30/10/12, 13:20

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dedeleco
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by dedeleco » 30/10/12, 13:36

To see closely the current curves, I have the impression that the anemometer is sheltered from the wind at the bottom of the mast, even in very strong wind, for certain precise wind directions, which makes low values ​​of speed, for strong winds giving the max of the Black600, and as soon as this wind turns a little, the speed measured by the anemometer makes a violent jump of a factor 2, without the production never changes !!


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Finally Obamot has finished cluttering up by showing that he often understands the wrong way, like dB and multilayers !!
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by Obamot » 30/10/12, 13:37

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by Ruthenian » 30/10/12, 21:34

It is clear that it is very bizarre. It would be nice if they said a little more on their test site.

I tried to measure the frequency at 1 r / s, I find for the moment 3 to 4 Hertz. I really have to come across it because with a hard hard analog analog scope.

Question if the speed of the blades is retained too much by loading too much, Do they drop out by causing the output to drop?
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dedeleco
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by dedeleco » 31/10/12, 00:00

Ruthenian wrote:It is clear that it is very bizarre. It would be nice if they said a little more on their test site.

I tried to measure the frequency at 1 r / s, I find for the moment 3 to 4 Hertz. I really have to come across it because with a hard hard analog analog scope.

Question if the speed of the blades is retained too much by loading too much, Do they drop out by causing the output to drop?


With an analog scope, it is quite easy to measure at an almost fixed frequency, higher than a few too slow Hertz, on a track.

In principle with 10 poles in pairs of two, we have a factor of 5 as the number of pairs, i.e. 1 revolution / s -> 5Hertz

By loading too much and reducing the speed, the blades pick up with a too high incidence of the blades, as at rest, as rabbit had corrected my salad with inversion.
We must see this stall by a sharp drop in speed, and power, with too much load.

There is in principle an optimal charge giving a speed and a frequency that I had indicated in this forum from 2OHertz for a wind of 3,6m / s to 4m / s according to the forum German and simple evaluations for lambda of 5 with the circumference of the blades of diameter 1,6m of 5m which gives 1tour / s the speed of 5m / s at the blade tip, which, for the lambda of 5, must be 5 times the wind speed, ie 1m / s of wind and which corresponds with the 5 pairs of poles of the alternator, at the frequency 5 times the revolutions / s or 5 Hertz for 1m / s of wind.

So at 4m / s of wind, we estimate the right optimal frequency of 4x5 = 20hetrz
and for 11m / s it should be the optimum for 11x5 = 55Hetrtz and 11 turns / s

One way to test the lambda very roughly, is also to see the angle of incidence at the tip of the blade, which with the wind relative to this speed of rotation must be around 6 ° to 10 °, for the lambda of 5 , the angle of the relative wind with respect to the plane of rotation is 11 ° fixed by the tangent of 11 ° = 1/5 and therefore the blades at the end, must be inclined little, by a few degrees approximately 11-6 = 5 ° degrees, significantly less than 11 degrees, zero angle of incidence.

This angle of the blades fixes the lambda.
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by Ruthenian » 31/10/12, 07:19

Ok, thank you for these explanations.

I have a set of blades, so I can give you the exact angle at the end relative to the axis of rotation.

For the lambda, I will try to deduce it by measuring the frequency with respect to the wind speed below the start of the Windmaster. Currently I can not because the wind blows slightly.

Dedéleco do you have a simple way to cancel my reactive power of 80-100 Va. so as not to distort my measurements? Condo - Coils?

According to Mastervolt, this Reactive Power is due to their output filtering circuit (220VAC) by condos.
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by dedeleco » 31/10/12, 10:52

Ruthenian wrote:Ok, thank you for these explanations.

I have a set of blades, so I can give you the exact angle at the end relative to the axis of rotation.

For the lambda, I will try to deduce it by measuring the frequency with respect to the wind speed below the start of the Windmaster. Currently I can not because the wind blows slightly.

Dedéleco do you have a simple way to cancel my reactive power of 80-100 Va. so as not to distort my measurements? Condo - Coils?

According to Mastervolt, this Reactive Power is due to their output filtering circuit (220VAC) by condos.


It is necessary to have an idea of ​​the cosPhi due to this filtering, because in general we compensate with ad hoc coils, calculated to resonate with the capacities.
So you have to measure with the oscilloscope according to the principles that I had indicated, and also note the diagram of this filter, with the values, to get an idea of ​​the cosphi and how to compensate for it (which must be variable depending on the load.) .

If the phi angle remains close to 90 ° to 10 or 15 °, it does not matter.
But a value of cosphi <<< 1 is equivalent to a design nonsense of the windmaster inverter, because the high frequency synthesis pulses of the 50Hertz must not need a filtering which disturbs the 50Hertz much.
If so, it is like starting to re-design the Windmaster.
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