Patent ID: 8680720

Claim:
A system for automatically regulating voltage comprising: a distribution-level AC bus connected to a power distribution grid, the distribution-level AC bus having an actual voltage and a nominal voltage; a voltage calculator configured to receive a measurement of said actual voltage of said distribution-level AC bus and to generate a feedback signal representative of said actual voltage of said distribution-level AC bus; one or one comparators configured to receive the feedback signal, a droop signal and a reference signal representative of said nominal voltage and to generate a comparator output signal based on said feedback signal, said droop signal and said reference signal; a compensator configured to receive said compensator output signal and to generate an input control signal in response to said comparator output signal, said input control signal being representative of a commanded level of reactive power; and an electronic power converter connected to said distribution-level AC bus, wherein said electronic power converter is responsive to said input control signal to deliver a commanded reactive power output to said distribution level AC bus and said commanded reactive power output pushes said actual voltage towards said nominal voltage.