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
H02J3/40—Synchronising a generator for connection to a network or to another generator
H02J3/42—Synchronising a generator for connection to a network or to another generator with automatic parallel connection when synchronisation is achieved