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Power management system

  • US 10,110,004 B2
  • Filed: 01/15/2016
  • Issued: 10/23/2018
  • Est. Priority Date: 03/11/2015
  • Status: Active Grant
First Claim
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1. A power management system connected to a generator or a battery and supplying power to a load, the power management system comprising:

  • a battery energy storage system (BESS) configured to obtain a state of charge (SOC) information, the state of charge (SOC) information including a charge state of the battery; and

    a charging control unit configured to control charging or discharging of the BESS,wherein the charging control unit is configured to;

    compare a desired SOC and a measured SOC based on the obtained SOC information, andregulate a charging power value of the battery and a discharging power value of the battery to match with the desired SOC, when as a result of the comparison, the desired SOC and the measured SOC are different from each other, andwherein the charging control unit is configured to;

    raise the charging power value of the battery when a slope of the measured SOC is smaller than a slope of the desired SOC during the charging of the battery, wherein the charging power value of the battery is increased linearly during the charging of the battery, anddecrease the discharging power value of the battery when the slope of the measured SOC is smaller than the slope of the desired SOC during the discharging of the battery, wherein the discharging power value of the battery is decreased linearly during the discharging of the battery.

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