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Solar / Re: How to maintain solar PV systems?
« Last post by DamonHD on Today at 03:38:02 PM »
Yes, on some of my perfectly vertical panels too...

Rgds

Damon
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Solar / Re: How to maintain solar PV systems?
« Last post by clockmanFRA on Today at 01:55:46 PM »
Why ?
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Solar / Re: How to maintain solar PV systems?
« Last post by DamonHD on Today at 07:57:34 AM »
1) A recent masters' thesis here demonstrated that cleaning PV usually gains little in the UK, given our rainfall.

2) Please don't just broadcast general tips; this is a board that thrives on conversation.  Talking at people will probably annoy them.

Rgds

Damon
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Solar / How to maintain solar PV systems?
« Last post by Insolergy on Today at 06:36:47 AM »
Hello Everyone,

Do you have solar PV system? To get the most out of your solar power investment, it is recommended to periodically clean solar PV modules so that they are free of any dust particles. Below mentioned are some easy tips on how to maintain PV system:-

1) Wiping your glass windows to make it clean. You may use a soft cloth, brush, wiper or a sponge squeegee on a long pole.

2) Galvanized iron mounting structures to prevent any rusting or corrosion.
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Wind / Re: Active Pitchcontrol
« Last post by mbouwer on Today at 02:34:43 AM »
Because I might want to reduce the rotor outer diameter to use thicker magnets
I now have fastened the 46 magnets 20x10x2 with cellotape.
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Wind / Re: Active Pitchcontrol
« Last post by joestue on July 23, 2017, 11:16:37 PM »
Well, whatever. Highspeed machines would benefit from laminated magnets.

Anyhow as I said before you need all of the magnets and one test coil, and then take 95% of that to get open circuit volts.

Alternatively you could setup.. a single magnet, or three of them. Fix the rotor to a pendulum and let it swing back and forth ( for 40 magnets) 18? degrees of travel. I suppose the volts you get out might be accurate... idk. Anyhow it will be rather low frequency so you'll have to rectify the output, charge up a capacitor and measure the dc volts with a high impedance volt meter.of course this assumes zero lost volts in the diodes

Anyhow I can't see how you can measure the volts from a single coil and a few magnets without an oscope and a spectrum analyzer.. if you do the pendulum gig, an oscope alone should suffice
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Wind / Re: Active Pitchcontrol
« Last post by hiker on July 23, 2017, 07:39:53 PM »
Solid rotor..lams for coils....guess I should have clarified..😜
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Wind / Re: Active Pitchcontrol
« Last post by joestue on July 23, 2017, 02:10:54 PM »
the rotor only deals with eddy currents according to the change in flux in the magnet, which is usually rather small.

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Solar / Re: Antique Solar Panel
« Last post by littleharbor2 on July 23, 2017, 01:25:07 PM »
Here's a close up of a cell on that panel.
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Wind / Re: Active Pitchcontrol
« Last post by hiker on July 23, 2017, 01:20:22 PM »
Coils need the lams to help control the eddy currants...other wise you get a lot of extra drag..less output..looks great
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