H ELECTRICITY
H02 GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
H02J3/00 Circuit arrangements for AC mains or AC distribution networks
H02J3/38 Arrangements for parallely feeding a single network by two or more generators, converters or transformers