Systems and methods for controlling power flow to and from an energy storage system are provided. One energy storage system includes an energy storage device and a bidirectional inverter configured to control a flow of power into or out of the energy storage device. The energy storage system further
Systems and methods for controlling power flow to and from an energy storage system are provided. One energy storage system includes an energy storage device and a bidirectional inverter configured to control a flow of power into or out of the energy storage device. The energy storage system further includes a controller configured to control the bidirectional inverter based on one or more signals received from the generator set coupled to the inverter via an AC bus. The controller is configured to, based on the one or more signals, control the bidirectional inverter to store power generated by the generator set in the energy storage device and transmit power from the energy storage device to a load driven by the generator set to maintain the generator set within a range of one or more operating conditions.
대표청구항▼
1. An energy storage system comprising: an energy storage device;a bidirectional inverter configured to control a flow of power into or out of the energy storage device; anda controller configured to control the bidirectional inverter based on one or more signals received from a generator set couple
1. An energy storage system comprising: an energy storage device;a bidirectional inverter configured to control a flow of power into or out of the energy storage device; anda controller configured to control the bidirectional inverter based on one or more signals received from a generator set coupled in parallel to the bidirectional inverter via an alternating current (AC) bus, wherein the controller is configured to, based on the one or more signals, control the bidirectional inverter to store power generated by the generator set in the energy storage device and transmit power from the energy storage device to a load driven by the generator set to maintain the generator set within a range of one or more operating conditions. 2. The energy storage system of claim 1, wherein the controller is configured to monitor the operating conditions based on the one or more signals received from the generator set. 3. The energy storage system of claim 1, wherein the generator set comprises an engine, and wherein the energy storage system is configured to increase a fuel economy of the engine by maintaining the generator set within the range of operating conditions. 4. The energy storage system of claim 1, wherein the controller is configured to: detect a change in a power demand of the load above a threshold level; andchange an operational state of the bidirectional inverter to store power in or receive power from the energy storage device in response to detecting the change in the power demand above the threshold level. 5. The energy storage system of claim 4, wherein the controller is configured to: detect an increase in the power demand of the load above a threshold increase; andcontrol the bidirectional inverter to discharge power stored in the energy storage device to drive the load in response to detecting the increase in the power demand above the threshold increase. 6. The energy storage system of claim 4, wherein the controller is configured to: detect a decrease in the power demand of the load above a threshold decrease; andcontrol the bidirectional inverter to charge the energy storage device with power generated by the generator set in excess of the power demand in response to detecting the decrease in the power demand above the threshold decrease. 7. The energy storage system of claim 1, wherein the controller is configured to: control the bidirectional inverter to charge the energy storage device with power generated by the generator set in excess of a power demand of the load while the generator set operates within the range of the one or more operating conditions; andcontrol the bidirectional inverter to discharge power from the energy storage device to drive the load and transmit a control signal to the generator set configured to cause the generator set to shut down for at least part of a time during which the power from the energy storage device is driving the load. 8. The energy storage system of claim 1, further comprising a DC-DC converter circuit configured to charge the energy storage device using power provided by one or more external energy sources. 9. The energy storage system of claim 1, wherein the controller is configured to control the bidirectional inverter to operate the energy storage system as an uninterruptible power supply and provide power to the load until the generator set is ready to power the load. 10. The energy storage system of claim 1, wherein the generator set comprises a first generator set of a plurality of generator sets, and wherein the controller is configured to: receive, from each of the generator sets, the one or more signals, the one or more signals for each generator set indicating the one or more operating conditions of the generator set; andgenerate at least one control signal configured to control an activation and deactivation of at least one of the plurality of generator sets based on the operating conditions of the at least one generator set. 11. The energy storage system of claim 10, wherein the controller is configured to generate the at least one control signal to deactivate the at least one generator in response to the at least one generator operating outside of the range of operating conditions. 12. A method of controlling a flow of power to and from an energy storage system, the method comprising: receiving, at a controller of the energy storage system, one or more signals from a generator set;monitoring, at the controller, one or more operating conditions of the generator set based on the one or more signals; andcontrolling a bidirectional inverter of the energy storage system to store power generated by the generator set in an energy storage device of the energy storage system and transmit power from the energy storage device to a load driven by the generator set to maintain the generator set within a range of one or more operating conditions,wherein the bidirectional inverter of the energy storage system is coupled to the generator set by an alternating current (AC) bus. 13. The method of claim 12, further comprising: detecting a change in a power demand of the load above a threshold level; andchanging an operational state of the bidirectional inverter to store power in or receive power from the energy storage device in response to detecting the change in the power demand above the threshold level. 14. The method of claim 13, wherein: detecting the change in the power demand of the load above the threshold level comprises detecting an increase in the power demand of the load above a threshold increase; andchanging the operational state of the bidirectional inverter comprises controlling the bidirectional inverter to discharge power stored in the energy storage device to drive the load in response to detecting the increase in the power demand above the threshold increase. 15. The method of claim 13, wherein: detecting the change in the power demand of the load above the threshold level comprises detecting a decrease in the power demand of the load above a threshold decrease; andchanging the operational state of the bidirectional inverter comprises controlling the bidirectional inverter to charge the energy storage device with power generated by the generator set in excess of the power demand in response to detecting the decrease in the power demand above the threshold decrease. 16. The method of claim 12, further comprising: controlling the bidirectional inverter to charge the energy storage device with power generated by the generator set in excess of a power demand of the load while the generator set operates within the range of the one or more operating conditions; andcontrolling the bidirectional inverter to discharge power from the energy storage device to drive the load and transmit a control signal to the generator set configured to cause the generator set to shut down for at least part of a time during which the power from the energy storage device is driving the load. 17. The method of claim 12, wherein the generator set comprises a first generator set of a plurality of generator sets, and wherein the method further comprises: receiving, from each of the generator sets, the one or more signals, the one or more signals for each generator set indicating the one or more operating conditions of the generator set; andgenerating at least one control signal configured to control an activation and deactivation of at least one of the plurality of generator sets based on the operating conditions of the at least one generator set. 18. The method of claim 17, wherein generating the at least one control signal comprises causing the at least one generator to deactivate in response to the at least one generator operating outside of the range of operating conditions. 19. A hybrid generator system comprising: a generator set configured to generate power to drive a load via an alternating current (AC) bus; andan energy storage system comprising: an energy storage device;a bidirectional inverter coupled in parallel to the generator set on the AC bus and configured to control a flow of power into or out of the energy storage device; anda controller configured to control the bidirectional inverter based on one or more signals received from the generator set, wherein the controller is configured to, based on the one or more signals, control the bidirectional inverter to store power generated by the generator set in the energy storage device and transmit power from the energy storage device to a load driven by the generator set to maintain the generator set within a range of one or more operating conditions. 20. The hybrid generator system of claim 19, wherein the controller is configured to: detect a change in a power demand of the load above a threshold level; andchange an operational state of the bidirectional inverter to store power in or receive power from the energy storage device in response to detecting the change in the power demand above the threshold level. 21. The hybrid generator system of claim 20, wherein the controller is configured to: detect an increase in the power demand of the load above a threshold increase; andcontrol the bidirectional inverter to discharge power stored in the energy storage device to drive the load in response to detecting the increase in the power demand above the threshold increase. 22. The hybrid generator system of claim 20, wherein the controller is configured to: detect a decrease in the power demand of the load above a threshold decrease; andcontrol the bidirectional inverter to charge the energy storage device with power generated by the generator set in excess of the power demand in response to detecting the decrease in the power demand above the threshold decrease. 23. The hybrid generator system of claim 19, wherein the controller is configured to: control the bidirectional inverter to charge the energy storage device with power generated by the generator set in excess of a power demand of the load while the generator set operates within the range of the one or more operating conditions; andcontrol the bidirectional inverter to discharge power from the energy storage device to drive the load and transmit a control signal to the generator set configured to cause the generator set to shut down for at least part of a time during which the power from the energy storage device is driving the load. 24. The hybrid generator system of claim 19, wherein the generator set comprises a first generator set of a plurality of generator sets, and wherein the controller is configured to: receive, from each of the generator sets, the one or more signals, the one or more signals for each generator set indicating the one or more operating conditions of the generator set; andgenerate at least one control signal configured to control an activation and deactivation of at least one of the plurality of generator sets based on the operating conditions of the at least one generator set. 25. The hybrid generator system of claim 24, wherein the controller is configured to generate the at least one control signal to deactivate the at least one generator in response to the at least one generator operating outside of the range of operating conditions.
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