Patent ID: 8022572
Filing Date: 2011-09-20
Classification: H02J

Abstract:
1. A power generating system comprising a variable speed genset comprising an engine and a variable speed generator mechanically coupled to the engine and configured to generate electrical power; an energy storage device configured to be charged or discharged during transient load conditions of a power grid; a controller to generate a speed control signal to select a speed for the genset based upon stored energy in the energy storage device and power generating system conditions, power grid conditions, or combinations thereof; a first converter to couple the variable speed genset and the energy storage device to the power grid; and a second converter configured to couple the energy storage device to the power grid, wherein the controller is configured to send storage control signals to the second converter so as to charge the energy storage device during lower than normal transient load conditions and discharge the energy storage device during higher than normal transient load conditions, wherein the second converter is connected to the power grid through a transformer.