cboy
100 W
I have a brand new 2017 Buick Regal alternator which I intend to convert to a brushless motor. I opened it up and found 6 wires from the stator coils to the diode plate. I assumed (as with other alternator conversions I've seen and done) the six wires would be the "entry" and "exit" wires for each coil and a multimeter would find three sets of two wires which would have continuity. What I discovered was something I'd never seen or heard of before. For the sake of describing the issue I've labeled the 6 wires A1, A2, B1, B2, C1, C2. Test results with a multimeter show the following sets of wires have continuity:
A1 and A2
A1 and B1
A2 and B1
C1 and C2
C1 and B2
C2 and B2
Looking at it a little differently it would appear A1, A2 and B1 are connected and C1, C2 and B2 are connected. One further bit of information wires A1 and A2 emerge from the stator very close to one another. Wires B1 and B2 emerge close to each other as well and about 120 mechanical degrees from the "A" set. Wires C1 and C2 emerge close together and about 120 mechanical degrees from either the "A" set or the "B" set of wires. BTW this is Denso alternator #1042101960. Does anyone have experience with alternator wiring which produces similar test results and what it means for how this alternator stator is wired? It almost appears to me that it is NOT three phase but rather some other configuration.
A1 and A2
A1 and B1
A2 and B1
C1 and C2
C1 and B2
C2 and B2
Looking at it a little differently it would appear A1, A2 and B1 are connected and C1, C2 and B2 are connected. One further bit of information wires A1 and A2 emerge from the stator very close to one another. Wires B1 and B2 emerge close to each other as well and about 120 mechanical degrees from the "A" set. Wires C1 and C2 emerge close together and about 120 mechanical degrees from either the "A" set or the "B" set of wires. BTW this is Denso alternator #1042101960. Does anyone have experience with alternator wiring which produces similar test results and what it means for how this alternator stator is wired? It almost appears to me that it is NOT three phase but rather some other configuration.