Hi NTL.
Yes 6 magnets 6 coils will be single phase and it would work very well accept one big problem. Sevier cogging. You'd have to put a pipe wrench on the shaft to turn it with the # 29S curved NEOs. I do have a 6 magnet #29 armature but with a 1/4" gap and its fairly hard to turn. The 6 pole motors with 36 slots do not have that as agressive coccing. Its much easyer for the magnets to jump from slot to slot on the higher count sloted motors.
I think though there could be some excellent power extracted from these small motors.
Way more than a SW403.
The 1 HP garbage didposal motors are rated 10 amps at 120 vac (1200 watts). You can tell as a motor this 6 pole type is not very efficient, its rateing is 1/4 HP, 9.5 amps 120 volt. Near the same power consumption but only 1/4 th the HP power.
However this 6 pole motor is rated 1050 rpm and the 4 pole 1 HP garbage disposal motor is rated 1725 rpm. Lower rpm and more poles are great for wind generaters.
The rerason for 4 magnets is for a 3 phase configuration and posable reduction of the heavy cogging. Since only 1 magnet can be centered over 1 pole at any given time rather than 6 centered over 6.
As in my littel 3 phase test alt there are 4 magnets for 3 coils, this some what mimics that but there will be two 3 coil stators side by side.
The original motor coils are wired in sires. This means that there are six 20 volt coils at 9.5 amps each end to end. If we seperate all six coils and place a fullwave bridge on each and then perelell the dc outputs (delta/jerry riged) we have effectivly perelelled the power of the 6 coils or 20 volts at 57 amps (1140 watts). However as a pma we don't get that direct relationship diode losses, less rpm from the blade ect, ect.
A wireing scheem that could simplify things would be to sires any 2 coils directly accross from each other, since these coils are in phase and can work together 40 volts would be there motor voltage and more as volts as a pma 1 coil VS 2 coils. This can be 1 phase. This alolows the motor or now pma to operate as 3 phase. You can now wire these 3 coil groups as star(that sucks) delta or delta/jerry riged. Witch ever is your preferance and works best for your blade and voltage requierments.
Wireing the coils in sires will reduce rpm requirements but will also reduce available amperage. So you play with combination of phasing and coil asignments till your happy with the outcome.
I have not placed the 4 magnet rotor in this stator yet but I'm shure the cogging will be less then the 6 magnet stator.
Bringing wires out of the motor can in this 3 coil only test alt will give all the options for phase types and the addition of the cheater coil to help star overcome its out of phase voltage loss will make the evalaluation of all of the phase posabilities very quike and accurate. It will eliminated any discrepancies that coils exsist in the dual rotor disc test alt such as, coil alignment, coil shape, coil size, wire gage, turns count, magnet placement on and on.
In my mind this alt will end the debate. It was sugjested there would be some diferance in expected results from the GM alt, are gap dual rotor and now motor conversion but so far the results have been the same (star sucks). I think that will hold true in this 3rd test alt as well.
It will be very hard for my distractors to discount this alt test. Thats the reason I've disided to build this alt. If its cogging is bad that doesn't matter. The lathe can spin it and its purpose is to validate my proposal of a more efficient use of magnets and copper.
I've never rewond an ac motor and this type is much easyer than the 36 slot type and it easely provides the 3 phase formate that is the center of this dibate.
In a day or 2 I'll try to present the schimatic diagrams of these diferant phase scheems I'm presenting here and a very complete set of test figures.
And you know me some pictures to.
JK TAS Jerry
