Energy storage device controlling method and power management system
AssigneeLsis Co., Ltd.
InventorJae Seong Shim
Life of this patent
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Abstract
A method for controlling energy storage device includes determining whether the operating frequency of the system falls within a dead band range corresponding to a preset frequency range, determining whether an SOC level indicating the charging amount of the energy storage device falls within a preset maintaining range, in a case where the operating frequency falls within the dead band range, and adjusting the SOC level so that the SOC level falls within the maintaining range in a case where the operating frequency of the system falls within the dead band range and the SOC level is outside the preset maintaining range, wherein the maintaining range represents a range between a preset lower limit and a preset upper limit.
Claims13
A method for controlling a charging amount of an energy storage device connected to a system according to a change in an operating frequency of the system by the energy storage device, the method comprising:
- determining whether the operating frequency of the system falls within a dead band range corresponding to a preset frequency range;
- determining whether an SOC level indicating the charging amount of the energy storage device falls within a preset maintaining range, in a case where the operating frequency falls within the dead band range;
- and
- adjusting the SOC level so that the SOC level falls within the maintaining range in a case where the operating frequency of the system falls within the dead band range and the SOC level is outside the preset maintaining range,
- wherein the maintaining range represents a range between a preset lower limit and a preset upper limit,
- wherein the adjusting the SOC level comprises performing different adjusting operations respectively for a case where the SOC level is smaller than the lower limit and a case where the SOC level is larger than the upper limit.
A power management system comprising:
- a power conversion system configured to associate a generator, a battery, and a system with each other to supply power to a load, or receive DC power from the generator or the battery to convert the DC power;
- and
- a charging control unit configured to read SOC level information of the battery and monitor an SOC change amount according to charging or discharging of the battery,
- wherein the charging control unit reads a frequency of the system through the power conversion unit, determines whether the frequency of the system falls within a dead band range that is a preset frequency range, and adjusts the SOC level so that the SOC level falls within a preset maintaining range in a case where the frequency falls within the dead band range and the SOC level is outside the maintaining range.
Dependencies are inferred from the claim text.