Patent ID: 7920942
Filing Date: 2011-04-05
Classification: H02J,H02P,Y02B,Y02E

Abstract:
1. A controller for controlling an energy storage device and a power generation device used in a distributed energy resource, the controller comprising circuitry: to determine a mode of operation for an energy storage device and a power generation device based on an energy level of the energy storage device and on a load to which the energy storage device and the power generation device are operably coupled for power transfer; to determine a first minimum power set point and a first maximum power set point for the energy storage device based on the determined mode of operation and on a storage output power, wherein the storage output power is measured at a first power bus operably coupled to the energy storage device; to determine a second minimum power set point and a second maximum power set point for the power generation device based on the determined mode of operation and on a generation output power, wherein the generation output power is measured at a second power bus operably coupled to the power generation device; to control a first output power of the energy storage device based on the determined first minimum power set point and the determined first maximum power set point; and to control a second output power of the power generation device based on the determined second minimum power set point and the determined second maximum power set point.