Synchronising two generators that are connected in parallel is important to do correctly, to avoid potential damage.
A two generator system is found on ships for example, as SOLAS regulations require more than one marine generator on-board.
Lets first consider the generator that is already connected to the ship, or a land-based electrical system.
This generator is producing a three-phase voltage output typically of 440 Volts for a marine ships installation or 400 / 415 volts for a land-based (shore side) generator system. An example of a land-based installation application is powering a hospital emergency power backup system.
Being a three-phase generator means that three voltage sine wave outputs are produced.
Each of the three voltage outputs is sine waves because the generator produces Alternating Current (AC)
to be continued soon, so check back….