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Control of combined storage and generation in distributed energy resources

  • US 7,920,942 B2
  • Filed: 03/01/2007
  • Issued: 04/05/2011
  • Est. Priority Date: 03/01/2007
  • Status: Active Grant
First Claim
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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.

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