CPC Subgroup
H02K 19/12 characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing
Full Title
Synchronous motors or generators (having permanent magnets H02K21/00) > Synchronous motors > for multi-phase current > characterised by the arrangement of exciting windings, e.g. for self-excitation, compounding or pole-changing