maybe consider a delta-junction type alternator, delta junction units are better at pushing higher amperage at lower rpms. chryslers 100 amp alternators are of this design. the square and round backs are a Y junction, higher amperage at higher rpms.
According to what I've read, while delta produces more low RPM current, wye wound produces more voltage. Seems to me this is a "which came first, the chicken or the egg" We don't even know for sure which is the problem factor at this point.
