System and method for control of a grid connected power generating system

A solar power generating system comprising

• a photovoltaic cell;
• a converter configured to couple the photovoltaic cell to a power grid;
• a first controller configured for calculating voltage commands to emulate a phasor back electromotive force, the controller further configured for using the voltage commands for generating converter switching commands, wherein the voltage commands include a voltage magnitude reference, an internal frequency reference calculated from an imbalance between an active power reference and an actual electrical power;
• and
• a second controller configured to limit a converter current.

A method of supplying electrical power to a power grid comprising:

• generating the electrical power from an electrical source;
• controlling the electrical source to emulate a phasor back electromotive force;
• and
• limiting a converter current magnitude;
• wherein controlling the electrical source comprises calculating voltage commands and using the voltage commands for generating converter switching commands, wherein the voltage commands include a voltage magnitude reference, an internal frequency reference calculated from an imbalance between a active power reference and the electrical power.