Re: Wind generators

Danny and Yvonne SIMMS

Hi Alan,

simple fellow that I am, I see valuable input from my super wind 350. Anything over 15knots apparent my super wind keeps my autohelm, radar, chart plotter and instruments functioning. Don't want any more than that. I have yet to hear a super wind owner slag them off.

Installation and positioning are critical. Mine is on top of the mizzen, couldn't be better. No noise, no vibration.

After 10 years the bearings wore out. Fist time up the mast to service it. Do me.

I know how much I would miss it on ocean passages because once I had a bad connection, couldn't understand why my batteries were not keeping up. Once I fixed that connection the difference was dramatic. 

I am not trying to power a floating marina condo with untold land type appliances.

What I want on an ocean passage is power to run my auto helm radios radar and instruments reliably, and to do that I need redundancy. Wind, solar and diesel. 

Kind Regards


SM 299

Ocean Pearl

On 30 August 2021 at 14:01 Alan Leslie <s.v.elyse@...> wrote:

I think that most wind generator enthusiasts are enthused without much information on how they perform in the real world. 
The curves of the Superwind 350 and the D400 show pretty much the same output vs windspeed up to 25knots.
They are similar in design - both 3-phase axial generators.
At 15 knots they both say they produce about 3A at 15 knots and about 7.5A at 20 knots  - 24V - see attached.
The Superwind levels off at 25 knots / 14.5A output due to its auto feathering system. The D400 keeps going at higher wind speeds 20A @ 30 knots, 27A @35 knots.
Of course, all these numbers are assuming a constant wind speed from a constant direction..... a luxury ideal that we rarely see.
And that confirms my previous comment, the only time I ever saw useful output from our D400 was heading up wind in  35+ knots, but I wouldn't pay wind generator money just to have that experience!
In general terms, under most conditions, it seems they don't put out much at all and the kW/$ equation just doesn't add up to me.
Still each to his own. Belief seems to be as important as evidence these days in some quarters.

Elyse SM437

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