Hello,
I'm new to this forum. This is my first post so go easy on me.
I have been collecting hard drive magnets for a while to build a wind generator. But a couple of days ago a came across a siemens 1 hp ac motor, 120/220 v running at 3535/3510 RPM 16.5/6.6 A. This is what Icould readfrom the plate (or what it is left of it).
The stator has 36 slots, and about 18 coils (it is pretty tight in there) which I leaved untouched
After reading for a while the post in this forum, I got a little disapointed about it. Today I decided to go ahead anyway and to the lathe I sent the rotor, making it 10mm thinner, because my magnets are a little less than 5mm thick , and decided to put two poles on it N S , (because the RPM are too high): each pole consisting of 12 hard drive magnets (i.e. 6 HDD magnets per pole) arranged in a 4X3 skewed array to avoid cogging (actually there is "little" cogging). The converted motor can be turned with the fingers.
The motor has 6 leads coming out: black, red, yellow,green, white and blue. By pairs I got open voltage readdings of
black-red : 5.5 V
blue-white : 3.9 V
yellow-green: 3.9 V.
These readdings where obtained by turning the motor by hand ussing a wrench bolted to the motor (yes very scientific!).
I started playing around with the connections, and I found that connecting
red and green
yellow and blue
and taking measurements at black and white I got 10 V with the same method. This is what I cannot understand (the three phases are in series here making it single phase?).
Please tell me what to do next. I'm thinking in opening up the coils to see if this can be improved or at least find out what is going on but I'm afraid I might destroy the motor or spend too much time on it. It looks pretty tight inthere.
Do you guys think it is worth the effort to continue with this conversion?
What tests should I perform?
Thanks guys,
Octavio