An electrical power conversion system and method

A system (20) and method for electrical power conversion is described. The system (20) is intended for use in converting a high voltage DC power output from a turbine generator to an AC power signal that is suitable for connecting to an AC power grid. The system (20) utilises a mechanical coupling (27) between a synchronous motor (26) driving a synchronous generator (28) in order to provide isolation, as well as allowing for control of the real power output by the system.