The effect of machine impedances on the voltage unbalance of 3-phase synchronous generators

IN COMMON use today are many 3-phase 4-wire electric systems that operate primarily with single-phase line-to-neutral loads. Quite often on these systems it is found impractical to distribute the single-phase loads so that the power supply operates into a balanced 3-phase system. A-c power systems on present-day aircraft typify this condition.