Photovoltaics: Solar trackers or trackers

Forum solar photovoltaic PV and solar electricity generation from direct radiation solar energy.
Energie_Vair
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by Energie_Vair » 01/01/10, 12:53

Personally, I think it is more economical to buy new solar panels than to buy one sun tracker. Now that solar panels are selling for under $ 3.5 per watt, or around $ 2.50 per watt, the choice is easy. Unless you make your own sun tracker. In this case, your installation will probably pay off more quickly, provided you are a DIYer ...
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by Grelinette » 03/01/10, 10:36

I think that the use of a solar tracker or tracker is generally very judicious (but also depends on the geographical place). At my job we have several m² of solar panels and they are simply set for optimal exposure to a specific time of year (winter) and at a given time, so often not optimized.
I asked the question in another post and ForHorse who seemed to know the technologies answered me.

That said, to broaden the question about tracer technology, do you think that the movement is fast enough for a PV to follow the sun from the roof of a slow moving vehicle: I am of course thinking of the hybrid carriage cover : Cheesy: With the teachers who supervise the students on the project we raised the idea of ​​a rolling prototype integrating a maximum of energy production source ... even if we know that a priori it will be more experimental than efficient! ).
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RESEARCH OF PLANS / TECHNICAL DRAWINGS OF SOLAR TRACKERS




by Albert197 » 17/01/10, 15:43

Hello everyone, I have a project on solar trackers (photovoltaic) to complete in a few months for the scientific prep exams and I have a big block: I would like to study two mechanisms: a tracker 1 axis and a other 2 axes, of roughly similar build, compare the efforts, the yields, conclude as to the interest of the two axes, .... The problem is that I have no plan on which to base myself to carry out the calculations . Do you know a way to get these technical drawings (2D views, 3D view with precise dimensions, ...)? Even if there is only one plane for the 1 axis or for the 2 axes, there is always a way to modify the mechanism to have the 2 cases ... Thanks in advance.
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by chatelot16 » 17/01/10, 16:12

the solar tracker is simple on a fixed point: it is enough to turn 1tour per 24h on an axis parallel to the axis of rotation of the earth: the speed is so slow that it requires a derisory power

on a vehicle it's something else: it may well require more power than the panel produces

I even think that the weight and the wind load of the panel will produce more loss than recovered electrical power

if you want solar panels, put them on the ground, charge a battery and then put it on the vehicle
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tigrou_838
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by tigrou_838 » 05/12/14, 10:38

hi, i'm going back a bit

So in 2013 I made a support for 100w panel, which is the sun, FROM EAST to WEST automatic and without electronics, and manually in summer or winter with only 4 screws to dismantle.
here is a small photo of the thing with injection on my home network.

Image

after several tests and improvement, I reset the counter to January 1, 2014 and on this day of 05/12/2014 I injected 131kw on my home network, so that I did not consume on the general counter .

made with almost the recuperative, garden, reduced model, etagere and brothel in the garage.

if you want I can put more photos.

see you soon
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dirk pitt
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by dirk pitt » 05/12/14, 11:09

tigrou_838 wrote: I injected 131kw on my home network,


i guess you mean 131kwh

at 0.12 € per kwh, that saves 15 € per year. a little symbolic but satisfying on an intellectual level.
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by Gaston » 05/12/14, 11:43

dirk pitt wrote:
tigrou_838 wrote: I injected 131kw on my home network,


i guess you mean 131kwh

at 0.12 € per kwh, that saves 15 € per year. a little symbolic but satisfying on an intellectual level.
It would be interesting to be able to estimate the gain compared to the same panel oriented in a fixed way (towards the south).

There is generally a figure of 20 to 30% of additional production, ie in this case 4 to 5 € per year "earned" by the tracker.

That said, great achievement :!: 8)
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tigrou_838
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by tigrou_838 » 05/12/14, 13:45

hello to you two, for having done the tests compared to a fixed, it's more or less 30%

and I agree with you that the price is not much.

Now I'm going to tell you my way of seeing things, I built this thing, it's for several reasons,
1st: do something cheap, maintenance-free, without electronics, with almost only recuperation.
2nd: self-consume live and delete part of my background consumption, the watches that I could not delete manually, such as the time on the oven, the alarm clock, the telephone box, and in addition compensate a little the consumption of my circulators of the solar heating system.
3rd: being more than a handyman, the pleasure of doing this kind of thing.

for me doing a calculation only on the price does not make sense in self-consumption and recuperation, it's worth it only in production above the background noise so above 500w if no recup, like the products that I see in the ads, where everything is included, but the price is not the same, and amortization in 25 years.

everyone sees noon at their door.
good end of the day to all.
tigrou
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by PITMIX » 06/12/14, 09:08

Hello
I admire your Tigger work because you had to think about it, it's simple and effective.
I installed some second-hand photovoltaic panels on the roof of my garage, which is almost flat.
I noticed a small difference if I orient my panels with an ideal angle compared to the sun.
I admit that I chose the simplicity concerning the pose by leaving them laid flat (less catch in the wind) because I told myself that it was really a lot of work for not much, and I increased the power by adding an additional panel.
I also noticed a significant gain by installing an upper cable section or by installing the injector inverter closer to the panels.
It is better to put an extension cord on the 230V side of the inverter than on the low voltage side.
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tigrou_838
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by tigrou_838 » 08/12/14, 11:45

Hello and thank you.

you're right, the inverter must be as close as possible to the panels with the big cable, easier to make an extension in 220v than in 12v and especially a lot of amperes.

for more info, I put the installation report on APPER.

A+

tigrou
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