System and method for control of multiphase power converters

A control system (34) for controlling a multiphase power converter (12) includes a current control module (40), a voltage control module (100) and a current command selector (33). The current control module (40) generates grid voltage command signals for the multiphase power converter (12) and the voltage control module (100) generates reference converter current command signals for the current control module (40). The current command selector (33) supplies active and reactive current command signals from a supervisory controller (27) to the current control module (40) when the multiphase power converter (12) is connected to the grid and supplies the reference converter current command signals to the current control module (40) when the multiphase power converter (12) is unconnected to the grid.