Systems and methods for stationary energy storage system optimization
AssigneeCummins Power Generation IP, Inc.
InventorYunxin Ni
Life of this patent
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Abstract
Systems and methods for controlling power flow to and from an energy storage system are provided. One implementation relates to an energy storage system comprising an energy storage device, an inverter configured to control a flow of power out of the energy storage device, a rectifier configured to control the flow of power into the energy storage device and one or more controllers. The one or more controllers may be configured to determine a schedule of a plurality of time periods based on historical price data. Each of the plurality of time periods may be associated with one of a state of charging, discharging, or idle. The one or more controllers may be configured to control the inverter and the rectifier based on the determined schedule.
Claims18
An energy storage system comprising:
- an energy storage device;
- a transceiver;
- an inverter configured to control a flow of power out of the energy storage device;
- a rectifier configured to control the flow of power into the energy storage device;
- one or more controllers configured to:
- generate a schedule of a plurality of time periods based on historical data relating to the plurality of time periods, the generated schedule indicating, for each of the time periods, whether the energy storage system is to be placed in a charging state, a discharging state, or an idle state during the time period, wherein the one or more controllers are configured to generate the schedule by:
- receiving data, via the transceiver, comprising the historical data associated with a historical plurality of time periods corresponding to the plurality of time periods, the data comprising historical price data;
- checking a charge level of the energy storage device;
- determining a number of time periods of the plurality of time periods available to discharge the energy storage device based on the charge level;
- and
- generating the schedule of the plurality of time periods based on the received data and the number of time periods of the plurality of time periods available to discharge the energy storage device;
- and
- control the inverter and the rectifier based on the determined schedule.
A method of controlling a flow of power to and from an energy storage system, executing on one or more controllers, the method comprising:
- receiving historical data associated with a plurality of time periods corresponding to a future plurality of time periods;
- checking a charge level of an energy storage device of the energy storage system;
- determining a number of time periods of the future plurality of time periods available to discharge the energy storage device based on the charge level;
- and
- generating a schedule for the future plurality of time periods based on the received historical data and the number of time periods of the future plurality of time periods available to discharge the energy storage device, wherein each respective time period is associated in the schedule with one of a charging, discharging, or idle state.
A generator system comprising:
- an energy storage device;
- a transceiver;
- a generator set configured to generate power to drive one or more loads, wherein one of the one or more loads is the energy storage device when the energy storage device is configured to charge;
- an inverter configured to control a flow of power out of the energy storage device;
- a rectifier configured to control the flow of power into the energy storage device;
- and
- one or more controllers configured to:
- determine a schedule of a plurality of time periods, wherein each of the plurality of time periods is associated with one of a state of charging, discharging, or idle, wherein the one or more controllers are configured to determine the schedule by:
- receiving data, via the transceiver, comprising historical price data associated with a plurality of time periods indicative of the plurality of time periods;
- checking a charge level of the energy storage device;
- determining a number of time periods of the plurality of time periods available to discharge the energy storage device based on the charge level;
- and
- determining the schedule of the plurality of time periods based on the received data and the number of time periods of the plurality of time periods available to discharge the energy storage device;
- and
- control the inverter and the rectifier based on the determined schedule.
Dependencies are inferred from the claim text.