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Wrong Motor | 56 comments (56 topical, 0 editorial)

Re: Wrong Motor (3.00 / 0) (#43)
by adaml on Mon Sep 1st, 2008 at 07:08:18 AM MST
(User Info)

Thanks again all. Have adapted blade and speed is a lot better, never thought it would go that fast!! Can I ask what is probably a really fundamental and beginners question about load and its definition. I am getting about 24v plus "unloaded" which I define as nothing bar multimeter connected. The thing I have noted is that with the motor connected to even just the three core wire down the tower that there is far more physical resistance coming from the motor. Connected to a bulb for example then this is even greater. This is what I understand to be "load". Am I correct in this line of thinking? Many thanks and apologies for sounding like and idiot!!

[ Parent ]

Re: Wrong Motor (3.00 / 0) (#44)
by ghurd on Mon Sep 1st, 2008 at 08:54:56 AM MST
(User Info)

I knew it would work. :-)

There should be no extra drag with just more wire. Check for one wire touching another.

The bulb is a load, but it is almost a short as far as the windmill is concerned. Bulbs are not much good for testing a windmill.

When charging a battery, no current will flow until the windmill voltage is higher than the battery voltage + diode voltage. No current flow means unloaded.

There should be no current flowing before about 7MPH wind, or it will "stall" trying to make power that is not available in the amount of wind.
Things will improve when the battery is connected.

You understand you need a blocking diode?
G-

[ Parent ]

Re: Wrong Motor (3.00 / 0) (#45)
by adaml on Mon Sep 1st, 2008 at 09:02:52 AM MST
(User Info)

Thank again Ghurd, you have been great support and encouragement. Will check the wires tonight when get home but don't think any touching. Have taken the three from the motor, connected to 7 meters 3 core down the inside of the tower then to rectifier. Connected to a battery would be a load also? I tested just by connecting my multimeter to the output with nothing else connected (pic on file), so unloaded. Have ordered a blocking diode and brought an inline fuse to go between the mill and batteries. Have acquired five new car batteries, understand they are not ideal but think they will do for a start.
Also see there is a book out, will wait for pay day and pre-order!!
Thanks again. Will keep you posted. If ever there is anything I can do in return.......

[ Parent ]

Re: Wrong Motor (3.00 / 0) (#46)
by TomW on Mon Sep 1st, 2008 at 09:17:03 AM MST
(User Info)

adam;

Careful, now. If you go praising Ghurd too much, between that all the income from his controller he will not be able to get in or out of his shop with his swollen head.

Seriously, tho, he is a great contributor here along with many others, of course.

Luckily his newfound fame and fortune have not significantly affected his humility [YET]!

Tom

"Education consists mainly of what we have unlearned."--Mark Twain
[ Parent ]

Re: Wrong Motor (3.00 / 0) (#47)
by adaml on Mon Sep 1st, 2008 at 09:23:01 AM MST
(User Info)

LOL Tom!!

[ Parent ]

Re: Wrong Motor (3.00 / 0) (#49)
by ghurd on Tue Sep 2nd, 2008 at 07:53:18 AM MST
(User Info)

I still fit through doorways...
My ears only rub a little! :-)
G-

[ Parent ]

Re: Wrong Motor (3.00 / 0) (#50)
by TomW on Tue Sep 2nd, 2008 at 10:17:58 AM MST
(User Info)

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"Education consists mainly of what we have unlearned."--Mark Twain
[ Parent ]

Re: Wrong Motor (3.00 / 0) (#48)
by adaml on Mon Sep 1st, 2008 at 02:02:08 PM MST
(User Info)

HI Guys and Ghurd, just to let you know took mill to friends farm and set up there, 20mph wind avg, highest reading on multimeter just over 70v unloaded so reckon heading in right direction!! Thanks again all for the help and inspiration.

[ Parent ]

Wrong Motor | 56 comments (56 topical, 0 editorial)

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