Axial Flux Generator

Hello miik999

You refer to "rotors" which is the plural of "rotor".

Advise if a single rotor is on the alternator, or if there is more than one.

You have not advised the field strength of your magnets, the distance between them and the stator pole-pieces, nor the magnetic flux strength.

Of course you can experiment, but if you have come this far, you surely must have some plan/s and details.

Put a few pictures into your reply, with a dimensioned rule alongside, so sizes may be estimated nearly correctly.

Much experimentation will be certainly essential, on those coils, if you have no plans.

Reply here please

Kind Regards....

I see as a big problem the handling of the 10kW generated power which are supposed to charge the 48V accumulator. It is necessary to control this current because some tens or more then hundredth of amperes cannot be fed into the accu without any control or limitation. The accu has to be robust enough to stand more then some amperes charging current and more then 100 or even the mentioned 200A are certainly applicable only during a few seconds.

If you building the design from the internet ot os 9 coils -- 16 gauge wire and 130 turns. 48 volt.

http://www.forcefieldmagnets.com/catalog/product_info.php?cPath=22_30&products_id=184

high quality wire 200 degree

You have received some good posts from various people already that should give you a heads up on this.

Furthermore (this is not a recommendation for this method though) assuming lead acid batteries (12 volts x 4?), you will need at least 58 volts of output to start putting a charge properly into the batteries.......

I would suggest that you need a good charging circuit to control everything as over charging is as bad as undercharging and can kill a battery stone cold dead......

Make sure that you do not use car batteries as they do not like either at all.....you need batteries that can handle deep discharge without problems (or with far less problems I should say.....), they cost substantially more to buy.

I personally prefer to charge each 12 volt battery separately as you can tailor the charge better for each one.....also 12 volt (good ones) chargers are easier to buy (or make!).....

Read up on all the safety requirements for the battery type you will be using, that alone may put you off. Many people have been blinded by such batteries as they did not know how to look after them properly.

Also, if LA Batteries, all 4 must be indentical in all respects, type, manufacturer and date of manufacturer Initial first usage must be the same day for best results.....

I have a sneaking feeling that the "homework phase" is now beginning for you.......before you spend any more time and money......

What it sounds like you are building is a Kozen Pulse motor. I think he has also adapted it to work as a generator.

Maybe I'm wrong but what you are describing sure sounds like this motor. The second web site has links that should give some design data so maybe that will help you. Good luck with your design.

j

Well that was very concise!! Or is it a secret code?

Andy , I also thought that other reply was rather short.

About what i am doing. The battery bank that I will be using will be big enough to hold enough AHs to maintain an average house for 48 hours. I am using Trojan deep cycle traction LA batteries.

I would like to put some drawings of my design on this forum but I dont know how. If you or anybody could help me with this I would greatly appreciate it.

For those days when the Sun or the wind is "unwilling", you need to have a good mains driven charger to keep the house going.

Recent infos that I have seen on CR4 tend to think that Solar energy (wind or Sun) tends only to be available fully about 20% of the time, depending upon your location of course. I can somehow believe that fairly easily....

In such a case, it would be impossible to build a large enough Solar array or windmill, to supply the full needs.....in only 20% of the time. Theoretically possible but totally impractical! It implies a unit that is 5 times greater in size and output.......

Therefore you still need the mains to keep the house going when the Sun and wind are being unhelpful. Saving on average 20% of your mains costs is still a good start (ignoring Lead Acid battery losses at this point!) I feel......

I am no expert in this area, although I take great interest in blogs such as yours and related infos from all sources and what I have written are just points to ponder, not a finite answer.

I hope this helps though to stir the gray cells further!!

Andy,

If there is another way to get "dibs" on following a discussion when one has nothing to add to it I have not figured it out.

j.

Hello j,

At the top right of the web page below the red bar is a button that looks like this-

Click on subscribe and go from there.

Brad

Post #13 has already answered this question for you.

If you want to "leave" a particular blog, just click in the same place and "Unsubscribe"...

Thanks.

j.