Wind pole logarithm setting

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Wind pole logarithm setting

Postby robtr » Fri Dec 19, 2014 11:36 am

Hi everyone, have just installed a chinese brand "buck-boost' wind turbine controller on one of my three 1kW wind turbines. It effectively matches the "impedance" of the turbine to that of the 48V batteries. It has made a big big difference to the overall performance.
My question to all you gurus out there - there is one parameter in the menu that can be specified - "wind generator pole logarithm" with default value = 10D. What is it and how do I find out what the optimal value should be? The manual is typically vague, and Google searches have been fruitless...
Thanks in anticipation.
Robert.
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Re: Wind pole logarithm setting

Postby davidg » Fri Dec 19, 2014 11:54 am

robtr wrote:Thanks in anticipation.
Robert.

Would help if we know what the software is your talking about, different software have different terms. It often helps a lot to see how it's being used in context as well.

If it's Chinese developed software, it may have a poor translation as well, remarkably common unfortunately.
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Re: Wind pole logarithm setting

Postby tkosam » Thu Feb 04, 2016 9:25 am

Hi,

I just installed the mppt controller you are talking about and have the same problem. What does the pole logarithm mean? The default also says 10D. Is there anyone out who could solve this? Maybe by pole, the chinese mean north pole or south or something else and it got mistranslated?

What did you do in the end and how it reflected the wind power production?



thanks
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Re: Wind pole logarithm setting

Postby Gordon-Loomberah » Thu Feb 04, 2016 11:19 am

Welcome to the Energy Matters Forum tkosam :)

If you could tell us what D stands for, it might help.

Normally you want the wind tower to be 10X the height of any obstruction away from the obstruction, preferably with the turbine higher that the obstruction.
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Re: Wind pole logarithm setting

Postby robtr » Thu Feb 04, 2016 4:42 pm

Gordon, I think the "pole" here refers not to the height of the pole, but the number of coils in the stator/permanent magnets on the rotor, i.e magnetic poles. I left mine set on default at 10D and it seems to work fine.
Cheers Robert.
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Re: Wind pole logarithm setting

Postby tkosam » Thu Feb 04, 2016 8:09 pm

thanks for the welcome into the forum :-)

this is the problem, i have no clue what the "D" stands for....

I bought this windmill:

http://www.aliexpress.com/item/Vertical ... .50.HVkiZd

it is a permanent magnet alternator

And i bought this controller:

http://www.aliexpress.com/item/800W-24V ... 109.SKPWwq

without boost buck option, only usb interface and monitoring possibility, RS232, I still didnt plug a laptop in it, since i got it installed yesterday......

but i already had a solar system for 2 years and an old phocos controller, which works great. I still have the phocos plugged into the system with the new hybrid controller, since i want to put more panels to charge the system.
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Re: Wind pole logarithm setting

Postby tkosam » Wed Feb 17, 2016 12:54 am

Hello,

So I finally got an answer from the Chinese vendor about the pole logarithm setting. She said it is the number of the poles and in my case, the number is 12. Taa daa :-)
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Re: Wind pole logarithm setting

Postby Alphonso » Mon Sep 18, 2017 7:11 am

I'm posting a mere three years after the OP.

I have the same MPPT as the OP and also some questions.

The software that sort of comes with the MPPT seems really great, but I can't get it to run properly. I can't remember the error - something about not being able to communicate with the MPPT.

I am a BSME. The wife is also a BSME. Too bad not BSEE or computer techy. We were unable to get it to work despite being able to communicate with the seller - wife is a graduate of a major university in China.

If anyone figures out the problem or who manufactured it, I would love to know.
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