Patent ID: 7333352

Claim:
An electrical power control system comprising: a first inverter; an electrical power grid; a first inductive member connected in series between said first inverter and said electrical power grid; a first voltage signal line between said electrical power grid and said first inductive member; a first current signal line between said first inductive member and said first inverter; a phase locked loop including an input, an output and a transfer function providing a predetermined phase shift between 0.5 to 500 degrees per Hz during nearly steady operation, said phase locked loop input is connected to said first voltage signal line said phase locked loop including means for generating a sine wave corresponding to the desired fundamental value and phase at the output of said first inverter; and, a first inverter control system having an a first input coupled to said phased lock loop output, a second input coupled to said first voltage signal line, and a third input coupled to said first current signal loop.