No qualifications are necessary to post here. You make your case and it will be tested.
Even pathological liars tell the truth sometimes.
I have made a large number of posts, some good, some bad, some right and some wrong.
It is for the individual to determine the usefulness of each post independently of any previous posts... ratings are for tv stations... where it's all nonsense anyway.
It is simple to get 300% improvement on a lousy system, or a poorly matched alternator to battery bank. Conversely it is very difficult to improve on a well matched system.
The post you refer too is for a poorly matched long pole ferrite magnet iron cored alternator, poorly matched to a battery bank. It is difficult to make a change to these alternators that doesn't improve them. They top out at under 300 watts into a 24v battery bank. Just changing the bank to 48v would improve it considerably.
What is pointed out, is that with judicious use of capacitors, this system has had an astounding improvement, and along the way, seems to be a better match to the wind than using just sophisticated solid state technology... which improved it considerably as well. Further, it was found that you can drive different battery/grid inverter requirements from the same mill concurrently using caps as system isolators (left hand doesn't know what the right hand is doing).
Once that was established, it was found that you could improve the lower end as well with a cap doubler... all connected at the same time.... and with no switching.
It is highly unlikely that this kind of improvement is possible with a well matched normal axial flux, but some ideas can be taken from this for the well matched system.... Notably the 3ph doubler.
If an axial is well matched to the wind, it is likely the cut in will be unreasonably high for a low wind area. Here a booster of some kind will be useful. Solid state switchers is one credible way, and for the less electronically inclined, capacitor doublers may fill that gap... better or worse.... I don't know at the moment. I have so much wind here that I rarely don't achieve cut in... and mine is 135rpm for 4m prop with about 6.5 TSR.
I have achieved over 300% increase in it's nominal output by mistake. I upped the battery voltage to 80v, and drove a 4ohm load from it, when the wind was driving 20 or more amps into the battery and load. I released the battery load and ran on the resistive load only. The voltage shot up to 145 odd volts at over 35A...thats over 5kw for a nominally 1kw machine.
It is also easy to get a 300% decrease in output. If I connect to a 24v battery bank, my cut in comes down to 77 rpm. It puts out 1-2amps in nearly any wind, and in a strong wind gets up to 5Amps maybe 6 in a big storm. So my system put out only 120w or so maximum.... but if I change my battery to 48v, I will get 1-1.5kw before furl in the same winds... nearly 1000% just by changing the battery volts.. whooppee... big wow, and if I change the furling point that will go up to over 2kw.
So 300% is no big deal, but if you can do it with no change to the intrinsic load, then you have a very poor performer running a whole lot better.... not a mystery, but from a low base.
It's all about researching the answer. If it is too good to be true, chances are it's not true. But sometimes you miss the thrust of the argument by only reading the headlines, and not understanding the system involved, or misinterpreting what was said.
If this man said he measured XYZ then I have no doubt whatsoever that is what was measured.
You rated this poorly, when I know it deserved so much better..just shows ratings are subjective nonsense.
...........oztules
maybe a little off topic, but it was a rant anyway.
