Patent ID: 9634510
Date: 2017-04-25
CPC Classifications: G01R,H02J,Y02E,Y04S

Claim:
1. A method of charging and discharging battery energy storage device, comprising: storing, in a data storage, data necessary for a voltage droop control and a frequency droop control for a battery; measuring, via a SOC measuring unit, a SOC value of the battery; measuring, via a grid voltage and frequency measuring unit, a voltage and a frequency of the grid; performing, via a charging and discharging control unit, the voltage droop control and frequency droop control corresponding to the voltage and frequency of the grid by using the data stored in the data storage, a SOC offset value, and a SOC feedback gain value of the battery, which are calculated on the basis of the SOC value; outputting, via the charging and discharging control unit, a control signal for performing charging and discharging on the battery while preventing overcharging and over-discharging at the time of charging and discharging the battery; and charging or discharging the battery, via a charging and discharging unit, according to the control signal.