Patent ID: 7760526

Claim:
A method for regulating an inverter connected to an electrical power source and in parallel to a three-phase grid to supply power generated by said source to said three-phase grid, comprising the steps of: determining two components of a voltage phasor representing a grid voltage in a fixed reference system; determining two components of a current phasor representing an output current from the inverter in a fixed reference system; combining the current phasor and the voltage phasor to determine components of a current phasor representing an output current from the inverter in a rotating reference system rotating at a velocity equal to a velocity of rotation of the phasor representing the grid voltage, generating a reference phasor in the rotating reference system in accordance with user-defined power parameters; comparing the components of the current phasor in the rotating reference system with the reference phasor in the rotating reference system, to determine an error signal; and generating a driver signal of the inverter, wherein said driver signal is the reference phasor modulated by the error signal.