Fisher and Paykel Bedini motor?
Started by ashtweth · · 15 posts · last reply 27 April 2009
-
#1 ·
Hi Guys, we just got a Fisher and paykel motor and got thinking , instead of making it into a hot charge windmill (puts out an estimated 400 watts) Why not try and re wire it for a Bedini charge?. Lets get this tested and posted.
That would make them far more efficient in home power IMO.
We already know that the solid state can charge on 4 watts! so it only makes sense to trial this. Not sure how you would re wire it for a Bedini wind mill. I found a good site for re wiring a wind mill hot charge config, i think they typically have to re wire it from 250 volt to 12 volt. YourGreenDream - Hobby alternative energy production education and resources. Fisher and Paykel Smart Drive generators for windmills, wind power and hydro generators. Take a look guys its got some good DIY info there also. If any one has any tips on how to wire this i can get this tested and made for the forum
.
Ash -
#2 ·
ash, plse perservere with the f and p . bedini motor ,im stumprd how to do this. i have 2 motors and have tried to convert 1 to wind mill but it would have to be huge to power it.spinning it by hand it is easy to get 100v ac.ashtweth wrote:
Hi Guys, we just got a Fisher and paykel motor and got thinking , instead of making it into a hot charge windmill (puts out an estimated 400 watts) Why not try and re wire it for a Bedini charge?. Lets get this tested and posted.
That would make them far more efficient in home power IMO.
We already know that the solid state can charge on 4 watts! so it only makes sense to trial this. Not sure how you would re wire it for a Bedini wind mill. I found a good site for re wiring a wind mill hot charge config, i think they typically have to re wire it from 250 volt to 12 volt. YourGreenDream - Hobby alternative energy production education and resources. Fisher and Paykel Smart Drive generators for windmills, wind power and hydro generators. Take a look guys its got some good DIY info there also. If any one has any tips on how to wire this i can get this tested and made for the forum.
Ash -
#3 ·
Where do you get one of those motors? Did you have to rip a washer apart or somthing.
Matt -
#4 ·
Its out of a washing machine
Nice ash, Im guessing that the rotor has the coils on it? Meaning it spins and commutation would be necessary? Or does the stator have the coils on it and its fixed in the middle? This would be similar to the brushless fans, the rotor is on the outside of the stator?
Gandalf just posted me a little brushless motor to fiddle with, Its a mini version of this, but bigger than a fan hopefully!
Regards -
#5 ·
Hi guys sorry just got in, K tai61, try this for an easy step by step wind ill conversion The Back Shed There is another site which has metal re enforcing available for it
EcoInnovation
@Matt, i could buy one and ship it up to you, however this thing weighs over 7 kg
Ill keep trying to find a link for the usa ones, i think i saw one once Bro. Yup gonna try this no matter what guys, i see Rick just did a new monopole energizer multi coil kit, i want to trial this on a water fuel cell so i have other sinister motives for this 
-
#6 ·
cheers ash for the site ,off to degog now.Akiwi over here has been turning these motors into hydro and wind generators for over 10 years and ships them worldwide ,he has a worker and alarge workshop,wires the motors up as both star and delter patterns and uses 2 bridges for off grid battery charging. used to just down the road from f&p factory and they dropped off occaional truckload of these motors,defective for nix.
any way for these motors look in the whiteware at local dummp normally heeps of the right wahing machunes with these motors ,bought whole w/machine for $5.00 .motors are run by 3 small reed switches to computer and any house voltage spike blows at least one reed, so people chuck em out, cheers bill -
#7 ·
F and P in the USA
Randy's Workshop and Engineering projects Home Page -
#8 ·
Hey Ash,
I am doing this on a (super)small scale here http://www.energeticforum.com/renewa...html#post52469
BTW, is the center of the stator hub a plastic material or is it laminations? Would you machine a new rotor up for this? I need to keep my eyes open for one, it could be an interesting project
There a couple of them on ebay right now, in Brisvegas for a pittance. -
#9 ·
Heya Ren, knowing the RPM you will be running them i bet we will need the steal ones LOL
Okay i have a friend in NSW who has one already ill get him to ship it over to you m8 , there are re enforced steal laminates already on this site for them(just for an idea dimension etc),
EcoInnovation
100 VAC by hand imagine the spikes!
Ash -
#10 ·
Holy smokes!! Damn, might have to save some of those coils for a generating function. Love your work Ash.
-
#11 ·
well a couple of us have been working on converting these motors to bedini motors.
The motors have a continuous metal ring connecting all the fingers under the plastic of the stator.
the rotor has a continuous metal band under the magnets.
there are a couple of different motors,most of the ones you will get as scrap will have 42 stator poles,& 56 magnet poles in a n/s arrangement either with 56 individual magnets,0r with 14,4-pole magnets
The later motor has 36 stator poles & probably 48 magnet poles.
all that steel acts as one big brake on the motor.
to drive the motor as a pulse motor we made a 3 phase driver circuit triggered by hall effect sensors soldered on to the original hall circuit board.
recovering energy through the back spike ala bedini.
we removed half of the magnets on a rotor to leave 28 north pole magnets.
(leaving the steel band on the rotor)
the motor ran slowly with little torque pulling about 4 amps@ 30V but the charging battery voltage did also appear to rise quite fast.
another version had 2/3 stator poles removed, & trigger coils added on top of the remaining 14 poles.
this motor is driven by a ssg circuit.
This motor draws as little as 5 watts,& works quite well,however we think it will work better without the steel band & are experimenting with that at the mo.
There are several ways these motors can be configured,& modifications we intend to try:
1 replace the magnets with steel pole pieces & run as a rotary attraction motor.
2 reduce the face area of the stator pole faces.
(the 36 pole motor has rounded pole faces which improve its performance as a wind generator.
3 leave the rotor as is,& change the number of stators to 28,
winding the coils alternatively c/w & Anti c/w making it a single phase bedini motor with n/s poles similar to the bedini fan kits that rick sells.
4 reduce the number of poles to 28 & fit magnets between the fingers,running the motor as a flux switch motor.
If you can get one of these motors to run well,you could place another one on the other end of the shaft as a generator.
the pole fingers all have holes in them,so they could be cut apart & reassembelled in different configurations sandwiched between 2 disks.
If you do manage to get a whole machine, make sure you save the shaft & bearing assembly.
hope this helps,
paul -
#12 ·
good to hear your your results kiwi. keep us posted
-
#13 ·
Thanks Paul, good to see someone else has had a crack at it. I'll post in this thread when I get something up and running. Might have to look at fabricating a custom non steel rotor for it. Should be lots of fun anyway, liking the idea of multiple ones ganged onto the same shaft. -
#14 ·
group effort.
Hey tai where abouts in NZ are you? I am doing video evenings in auckland,I have the energy from the vaccuum videos,
I think that connecting people together who are working on these projects is quite important.
Paul. -
#15 ·
paul, sounds great, im in tauranga, can you send me email adrress,cheers,
Sign in to reply, or ask for an account.