2 posts
· 4 more in threads this archive does not carry
· writing between Apr 2009
and Apr 2009
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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.
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.